/* Root Variables */
:root {
  --primary-color: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --text-color: #374151;
  --text-muted: #6b7280;
  --bg-color: #f9fafb;
  --sidebar-width: 280px;
  --header-height: 64px;
  --card-bg: white;
  --border-color: #e5e7eb;
  --hover-color: rgba(99, 102, 241, 0.08);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --card-bg-rgb: 255, 255, 255;
}

/* Dark Mode */
[data-theme="dark"] {
  --primary-color: #818cf8;
  --primary-light: #a5b4fc;
  --primary-dark: #6366f1;
  --text-color: #e5e7eb;
  --text-muted: #9ca3af;
  --bg-color: #111827;
  --card-bg: #1f2937;
  --border-color: #374151;
  --hover-color: rgba(129, 140, 248, 0.1);
  --card-bg-rgb: 31, 41, 55;
}

/* Global Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-color);
  background-color: var(--bg-color);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  display: flex;
  min-height: 100vh;
}

.nav-section {
  margin-bottom: 16px;
}

.nav-section-title {
  padding: 0 24px;
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
  display: block;
}

.nav-section ul {
  list-style: none;
}

/* Sidebar Styles */
.sidebar {
  width: var(--sidebar-width);
  background: var(--card-bg);
  box-shadow: var(--shadow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: fixed;
  height: 100vh;
  z-index: 1300;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 24px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
  z-index: 1301;
}

.close-sidebar {
  display: none; 
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px 0;
  overflow-y: auto;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE and Edge */
}

.sidebar-nav::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.sidebar-nav ul {
  list-style: none;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  padding: 12px 24px;
  color: var(--text-muted);
  text-decoration: none;
  gap: 12px;
  transition: 0.2s ease;
  border-radius: 6px;
  margin: 0 12px;
  font-size: 14px;
}

.sidebar-nav a:hover {
  background: var(--hover-color);
  color: var(--primary-color);
}

.sidebar-nav a.active {
  background: var(--hover-color);
  color: var(--primary-color);
  font-weight: 500;
}

.sidebar-nav i {
  width: 20px;
  text-align: center;
  font-size: 16px;
}

.sidebar-footer {
  padding: 16px 0;
  border-top: 1px solid var(--border-color);
}

.logout {
  color: #ef4444 !important;
}

/* Main Content Styles */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding-top: var(--header-height);
  padding: 16px;
  width: 100%;
}

@media (max-width: 768px) {
  .main-content {
    padding: 12px;
  }
}

.top-bar {
  height: var(--header-height);
  background: var(--card-bg);
  display: flex;
  align-items: center;
  padding: 0 24px;
  box-shadow: var(--shadow-sm);
  position: fixed;
  top: 0;
  right: 0;
  width: calc(100% - var(--sidebar-width)); 
  justify-content: flex-end;
  z-index: 1200;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
  .top-bar {
    padding: 0 16px;
    width: 100%;
  }
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
  transition: all 0.2s ease;
  position: relative;
  z-index: 1001;
  margin-right: auto;
}

.menu-toggle i {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.menu-toggle.active i {
  transform: rotate(90deg);
}

.menu-toggle:hover {
  background: var(--hover-color);
  color: var(--primary-color);
}

.notifications {
  position: relative;
  margin-left: auto;
  z-index: 1200;
}

.notification-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
  transition: all 0.2s;
  position: relative;
}

.notification-btn:hover {
  background: var(--hover-color);
  color: var(--primary-color);
}

.notification-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--primary-color);
  color: white;
  font-size: 10px;
  padding: 2px 5px;
  border-radius: 10px;
  font-weight: 500;
}

.notification-dropdown {
  position: absolute; 
  width: 320px;
  top: calc(100% + 8px);
  right: 0;
  border-radius: 12px;
  z-index: 1200;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px) scale(0.95);
  transform-origin: top right;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.notification-dropdown.active {
  display: block;
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.notification-header {
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.notification-header h3 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.mark-all-read {
  background: none;
  border: none;
  color: var(--primary-color);
  font-size: 13px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.mark-all-read:hover {
  background: var(--hover-color);
}

.notification-list {
  max-height: 360px;
  overflow-y: auto;
}

.notification-item {
  padding: 16px;
  display: flex;
  gap: 12px;
  border-bottom: 1px solid var(--border-color);
  transition: 0.2s ease;
  cursor: pointer;
  animation: slideIn 0.3s ease forwards;
  opacity: 0;
  transform: translateX(-20px);
}

@keyframes slideIn {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.notification-item:hover {
  background: var(--hover-color);
}

.notification-item.unread {
  background: var(--hover-color);
}

.notification-item.important {
  border-left: 3px solid #ef4444;
}

.notification-icon {
  color: var(--primary-color);
  font-size: 16px;
}

.notification-content p {
  font-size: 13px;
  margin-bottom: 4px;
  color: var(--text-color);
}

.notification-time {
  font-size: 12px;
  color: var(--text-muted);
}

.content {
  padding: 24px;
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .content {
    padding: 16px;
  }
}

/* Settings Page Styles */
.settings-container {
  max-width: 768px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.settings-section {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.settings-section:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.settings-section h2 {
  margin-bottom: 24px;
  color: var(--text-color);
  font-size: 16px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.settings-section h2 i {
  color: var(--primary-color);
}

.settings-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.settings-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 12px;
}

.settings-item-info h4 {
  color: var(--text-color);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
}

.settings-item-info p {
  color: var(--text-muted);
  font-size: 13px;
}

/* Switch Toggle */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color);
  transition: .3s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary-color);
}

input:checked + .slider:before {
  transform: translateX(20px);
}

.slider.disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Profile Settings */
.profile-settings {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.profile-avatar {
  display: flex;
  align-items: center;
  gap: 24px;
}

.avatar-preview {
  width: 80px;
  height: 80px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 32px;
}

.upload-btn {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  transition: all 0.2s ease;
}

.upload-btn:hover {
  background: var(--hover-color);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.profile-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.form-input {
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  color: var(--text-color);
  font-size: 14px;
  transition: all 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--hover-color);
}

.save-profile {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.save-profile:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.save-profile.saving::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  animation: loading 1s infinite;
}

.save-profile.saved {
  background: #10B981;
}

@keyframes loading {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.change-password-btn {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  justify-content: center;
}

.change-password-btn:hover {
  background: var(--hover-color);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.theme-toggle {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  padding: 8px;
  border-radius: 30px;
  width: 70px;
  height: 34px;
  position: relative;
  cursor: pointer;
  transition: all 0.3s ease;
}

.theme-toggle .theme-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle .theme-icon.light {
  left: 4px;
  opacity: 1;
  color: #fbbf24;
}

.theme-toggle .theme-icon.dark {
  right: 4px;
  opacity: 0;
  color: #6366f1;
}

.theme-toggle.active {
  background: var(--primary-color);
}

.theme-toggle.active .theme-icon.light {
  opacity: 0;
}

.theme-toggle.active .theme-icon.dark {
  opacity: 1;
}

.info-item {
  padding: 16px;
  border-radius: 8px;
  background: var(--bg-color);
  margin-bottom: 12px;
  border: 1px solid var(--border-color);
}

.info-item label {
  font-size: 12px;
  color: var(--text-muted);
  display: block;
  margin-bottom: 4px;
}

.info-item .info-value {
  font-size: 14px;
  color: var(--text-color);
  font-weight: 500;
}

.profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.profile-image {
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
}

.profile-info {
  flex: 1;
}

.profile-info h3 {
  color: var(--text-color);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
}

.profile-info span {
  color: var(--text-muted);
  font-size: 12px;
}

/* Page Styles */
.page-header {
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 8px;
}

.page-header p {
  color: var(--text-muted);
  font-size: 14px;
}

.page-content {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.page-content h2 {
  font-size: 18px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 16px;
}

.page-content p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .profile-avatar {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .settings-item {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
  .close-sidebar {
    display: block;
    position: absolute;
    right: 16px;
    top: 16px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: background-color 0.2s;
    z-index: 1000;
  }

  .close-sidebar:hover {
    background-color: var(--hover-color);
    color: var(--primary-color);
  }
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .top-bar {
    margin-left: 0;
  }

  .main-content::before {
    z-index: 1200;
  }

  .sidebar {
    transform: translateX(-100%);
    opacity: 0;
    visibility: hidden;
  }

  .sidebar.active {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  .main-content {
    margin-left: 0;
  }

  .menu-toggle {
    display: block;
  }

  .notification-dropdown {
    position: fixed;
    width: 100%;
    top: var(--header-height);
    right: 0;
    margin-top: 0;
    height: calc(100vh - var(--header-height));
    border-radius: 0;
    transform: translateY(100%);
    transform-origin: bottom;
    transition: all 0.4s cubic-bezier(0.2, 0.9, 0.3, 1.1);
    will-change: transform;
    backdrop-filter: blur(8px);
    background: rgba(var(--card-bg-rgb), 0.95);
    z-index: 1400;
  }

  .notification-dropdown.active {
    transform: translateY(0);
  }

  .sidebar-nav a {
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transition-delay: calc(var(--item-index) * 0.05s);
  }

  .sidebar.active .sidebar-nav a {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Modal Styles - Updated */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(17, 24, 39, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 32px;
  width: 90%;
  max-width: 400px;
  text-align: center;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: var(--hover-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-icon i {
  font-size: 32px;
  color: var(--primary-color);
}

.modal h3 {
  color: var(--text-color);
  margin-bottom: 12px;
  font-size: 20px;
  font-weight: 600;
}

.modal p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 32px;
  line-height: 1.6;
}

.modal-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.modal-button {
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 120px;
}

.modal-button.cancel {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-color);
}

.modal-button.cancel:hover {
  background: var(--hover-color);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.modal-button.confirm {
  background: var(--primary-color);
  border: 1px solid var(--primary-color);
  color: white;
}

.modal-button.confirm:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

/* Dashboard Grid Layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.dashboard-card {
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.dashboard-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
}

.card-header h3 i {
  color: var(--primary-color);
}

.card-content {
  padding: 20px;
}

/* Event Items */
.event-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.event-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.event-item:first-child {
  padding-top: 0;
}

.event-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--hover-color);
  border-radius: 8px;
  color: var(--primary-color);
}

.event-date .day {
  font-size: 18px;
  font-weight: 600;
}

.event-date .month {
  font-size: 12px;
  font-weight: 500;
}

.event-info h4 {
  color: var(--text-color);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
}

.event-info p {
  color: var(--text-muted);
  font-size: 12px;
}

/* Quick Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.stat-item {
  background: var(--bg-color);
  padding: 16px;
  border-radius: 8px;
  text-align: center;
}

.stat-value {
  font-size: 24px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

/* Homework Items */
.homework-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.homework-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.homework-item:first-child {
  padding-top: 0;
}

.homework-info h4 {
  color: var(--text-color);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
}

.homework-info p {
  color: var(--text-muted);
  font-size: 12px;
}

.homework-meta {
  text-align: right;
}

.due-date {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.status {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
}

.status.pending {
  background: rgba(234, 179, 8, 0.1);
  color: #ca8a04;
}

/* Schedule Items */
.schedule-item {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.schedule-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.schedule-item:first-child {
  padding-top: 0;
}

.schedule-time {
  min-width: 45px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary-color);
}

.schedule-info h4 {
  color: var(--text-color);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
}

.schedule-info p {
  color: var(--text-muted);
  font-size: 12px;
}

/* Responsive Adjustments */
@media (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .dashboard-grid {
    margin-top: 16px;
    gap: 16px;
  }
  
  .card-content {
    padding: 16px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .stat-value {
    font-size: 20px;
  }
}

/* Panel Page Specific Styles */
.progress-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.progress-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.progress-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.progress-info span {
  font-size: 12px;
  color: var(--primary-color);
  font-weight: 500;
}

.progress-bar {
  height: 8px;
  background: var(--bg-color);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar .progress {
  height: 100%;
  background: var(--primary-color);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.activity-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.activity-item {
  display: flex;
  gap: 16px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: transform 0.2s ease;
}

.activity-item:hover {
  transform: translateX(4px);
}

.activity-icon {
  width: 40px;
  height: 40px;
  background: var(--hover-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

.activity-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.activity-info p {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.activity-time {
  font-size: 11px;
  color: var(--text-muted);
}

.achievement-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.achievement-item {
  background: var(--bg-color);
  padding: 16px;
  border-radius: 8px;
  text-align: center;
  opacity: 0.5;
  transition: all 0.2s ease;
}

.achievement-item.earned {
  opacity: 1;
}

.achievement-item:hover {
  transform: translateY(-2px);
}

.achievement-icon {
  width: 48px;
  height: 48px;
  background: var(--hover-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  color: var(--primary-color);
}

.achievement-item h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.achievement-item p {
  font-size: 12px;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .achievement-grid {
    grid-template-columns: 1fr;
  }
  
  .activity-item {
    padding: 12px;
  }
  
  .activity-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
}

/* Notification Page Styles */
.notifications-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.notifications-list {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.dashboard-card.notifications-list {
  width: 100%;
  margin: 0 auto;
}

.notification-filters {
  display: flex;
  gap: 12px;
  margin: -16px -24px 24px -24px;
  padding: 16px 24px;
  background: var(--card-bg);
  position: sticky;
  top: 0;
  z-index: 10;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  border-bottom: 1px solid var(--border-color);
}

.notification-filters::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.filter-btn:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.filter-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.notification-group {
  margin-bottom: 24px;
}

.notification-group:last-child {
  margin-bottom: 0;
}

.notification-date {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-left: 4px;
}

.notification-item {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
  margin-bottom: 12px;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.notification-item:last-child {
  margin-bottom: 0;
}

.notification-item:hover {
  transform: translateX(4px);
  border-color: var(--primary-color);
}

.notification-item.important {
  border-left: 3px solid #ef4444;
}

.notification-item.unread {
  background: var(--hover-color);
}

.notification-icon {
  width: 40px;
  height: 40px;
  background: rgba(var(--card-bg-rgb), 0.8);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  flex-shrink: 0;
}

.notification-content {
  flex: 1;
}

.notification-content h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.notification-content p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.5;
}

.notification-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.notification-meta .time {
  font-size: 12px;
  color: var(--text-muted);
}

.notification-meta .category {
  font-size: 11px;
  color: var(--primary-color);
  background: var(--hover-color);
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 500;
}

.settings-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

@media (max-width: 768px) {
  .notifications-container {
    padding: 0 16px;
  }
  
  .dashboard-card.notifications-list {
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .notification-filters {
    margin: -16px -16px 16px -16px;
    padding: 16px;
  }

  .notification-item {
    padding: 16px;
  }

  .card-content {
    padding: 16px;
  }

  .notification-icon {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .notification-content h4 {
    font-size: 14px;
  }

  .notification-content p {
    font-size: 13px;
  }

  .notification-meta {
    flex-wrap: wrap;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .notifications-container {
    padding: 0 12px;
  }

  .notification-filters {
    padding: 12px;
    gap: 8px;
  }

  .filter-btn {
    padding: 6px 12px;
    font-size: 12px;
  }

  .notification-item {
    padding: 12px;
  }

  .notification-date {
    font-size: 11px;
    margin-bottom: 8px;
  }

  .notification-content h4 {
    font-size: 13px;
  }

  .notification-content p {
    font-size: 12px;
  }

  .notification-meta {
    font-size: 11px;
  }
}

.no-notifications {
  text-align: center;
  padding: 48px 0;
  color: var(--text-muted);
}

.no-notifications i {
  font-size: 48px;
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .notifications-container {
    padding: 0 16px;
  }
}

/* Courses Page Styles */
.courses-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin: 0 auto;
}

.course-card {
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all 0.3s ease;
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.course-header {
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.course-icon {
  width: 48px;
  height: 48px;
  background: var(--hover-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 24px;
}

.progress-ring {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.progress-ring svg {
  transform: rotate(-90deg);
}

.progress-ring-circle-bg {
  fill: none;
  stroke: var(--border-color);
  stroke-width: 3;
}

.progress-ring-circle {
  fill: none;
  stroke: var(--primary-color);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 88;
  transition: stroke-dashoffset 0.3s ease;
}

.progress-ring span {
  position: absolute;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-color);
}

.course-content {
  padding: 20px;
}

.course-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 8px;
}

.course-instructor {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.course-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}

.course-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-muted);
}

.course-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.course-stats .stat {
  text-align: center;
}

.stat-value {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 4px;
  display: block;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

.course-actions {
  padding: 20px;
  display: flex;
  gap: 12px;
}

.course-btn {
  flex: 1;
  padding: 10px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.course-btn.primary {
  background: var(--primary-color);
  color: white;
  border: none;
}

.course-btn.primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.course-btn.secondary {
  background: var(--bg-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.course-btn.secondary:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

@media (max-width: 768px) {
  .courses-container {
    padding: 0 16px;
  }

  .courses-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .course-header {
    padding: 16px;
  }

  .course-content {
    padding: 16px;
  }

  .course-actions {
    padding: 16px;
  }

  .course-stats {
    padding: 12px 0;
  }

  .stat-value {
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  .courses-container {
    padding: 0 12px;
  }

  .course-meta {
    flex-direction: column;
    gap: 8px;
  }

  .course-icon {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }
}

@media (max-width: 768px) {
  .main-content {
    margin-left: 0;
    padding: 0;
    overflow-x: hidden;
  }

  .top-bar {
    margin-left: 0;
    position: fixed;
    width: 100%;
    z-index: 1200;
    padding: 0 16px;
    height: var(--header-height);
    transition: all 0.3s ease;
  }

  .content {
    padding-top: calc(var(--header-height) + 16px);
    padding-left: 16px;
    padding-right: 16px;
    padding-bottom: 16px;
  }

  /* Courses Responsive Fixes */
  .courses-container {
    padding: 0;
    overflow: hidden;
  }

  .dashboard-card.courses-list {
    border-radius: 12px;
    margin: 0;
    overflow: hidden;
  }

  .courses-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 0;
  }

  .course-card {
    margin: 0;
    transform: none;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .course-card:hover {
    transform: translateY(-2px);
  }

  /* Notifications Responsive Fixes */
  .notifications-container {
    padding: 0;
    overflow: hidden;
  }

  .dashboard-card.notifications-list {
    border-radius: 12px;
    margin: 0;
  }

  .notification-filters {
    position: sticky;
    top: var(--header-height);
    z-index: 1100;
    background: var(--card-bg);
    margin: 0;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
    -webkit-overflow-scrolling: touch;
  }

  .notification-content-wrapper {
    padding: 16px;
  }

  .notification-group {
    margin-bottom: 16px;
  }

  .notification-item {
    margin-bottom: 8px;
    transform: none;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .notification-item:hover {
    transform: translateX(2px);
  }

  /* Dropdown Notifications */
  .notification-dropdown {
    position: fixed;
    width: 100%;
    top: var(--header-height);
    right: 0;
    margin-top: 0;
    height: calc(100vh - var(--header-height));
    border-radius: 0;
    margin: 0;
    transform: translateY(100%);
    transform-origin: bottom;
    transition: all 0.4s cubic-bezier(0.2, 0.9, 0.3, 1.1);
    will-change: transform;
    backdrop-filter: blur(8px);
    background: rgba(var(--card-bg-rgb), 0.95);
    z-index: 1400;
  }

  .notification-dropdown.active {
    transform: translateY(0);
  }

  .notification-dropdown .notification-list {
    max-height: calc(100vh - var(--header-height) - 60px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Enhanced Sidebar Transition */
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
  }

  .sidebar.active {
    transform: translateX(0);
  }

  /* Fix for content shifting */
  body.sidebar-active {
    overflow: hidden;
  }

  /* Smooth scrolling */
  .notification-filters,
  .notification-list,
  .courses-grid {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
  }
}

/* Additional fixes for smaller screens */
@media (max-width: 480px) {
  .content {
    padding-top: calc(var(--header-height) + 8px) 12px 12px 12px;
  }

  .notification-filters {
    padding: 12px;
    gap: 8px;
  }

  .filter-btn {
    padding: 6px 12px;
    font-size: 12px;
  }

  .notification-item {
    padding: 12px;
  }

  .course-card {
    border-radius: 8px;
  }

  .course-header,
  .course-content,
  .course-actions {
    padding: 12px;
  }
}

/* General Improvements */
.notification-filters {
  scrollbar-width: none;
  -ms-overflow-style: none;
  white-space: nowrap;
  padding-bottom: 16px;
}

.notification-filters::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  white-space: nowrap;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Smooth transitions for all interactive elements */
.course-card,
.notification-item,
.filter-btn,
.sidebar,
.top-bar,
.notification-dropdown {
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

/* Fix for iOS momentum scrolling */
.notification-list,
.courses-grid,
.notification-filters {
  -webkit-overflow-scrolling: touch;
}

/* Prevent content shift when scrollbar appears */
html {
  scrollbar-gutter: stable;
}

/* Enhance touch targets for mobile */
@media (max-width: 768px) {
  .filter-btn,
  .notification-item,
  .course-btn,
  .menu-toggle,
  .notification-btn {
    min-height: 44px;
    padding: 12px 16px;
  }
}

/* Add safe area insets support */
@supports (padding: max(0px)) {
  .notification-dropdown,
  .content,
  .top-bar {
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
    padding-bottom: max(16px, env(safe-area-inset-bottom));
  }
}

/* Homework Styles */
.homework-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.homework-filters {
  display: flex;
  gap: 12px;
  margin: -16px -24px 24px -24px;
  padding: 16px 24px;
  background: var(--card-bg);
  position: sticky;
  top: 0;
  z-index: 10;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  border-bottom: 1px solid var(--border-color);
}

.homework-filters::-webkit-scrollbar {
  display: none;
}

.homework-content-wrapper {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.homework-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.homework-date {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  padding-left: 4px;
}

.homework-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-color);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  position: relative;
  transition: all 0.3s ease;
}

.homework-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.homework-status-indicator {
  width: 4px;
  height: 100%;
  background: var(--primary-color);
  border-radius: 2px;
  position: absolute;
  left: 0;
  top: 0;
}

.homework-item.urgent .homework-status-indicator {
  background: #ef4444;
}

.homework-item.completed .homework-status-indicator {
  background: #10b981;
}

.homework-item.late .homework-status-indicator {
  background: #f59e0b;
}

.homework-main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.homework-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.homework-header h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-color);
}

.homework-priority {
  font-size: 12px;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 4px;
}

.homework-priority.high {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.homework-priority.medium {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
}

.homework-priority.low {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.homework-status {
  font-size: 12px;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 4px;
}

.homework-item.completed .homework-status {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.homework-item.late .homework-status {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.homework-details {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.homework-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.homework-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.homework-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
}

.meta-item i {
  font-size: 14px;
}

.homework-progress {
  margin-top: 8px;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.progress-bar {
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar .progress {
  height: 100%;
  background: var(--primary-color);
  border-radius: 3px;
  transition: width 0.3s ease;
}

.homework-actions {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  white-space: nowrap;
}

.action-btn.continue {
  background: var(--primary-color);
  color: white;
}

.action-btn.continue:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.action-btn.view {
  background: var(--bg-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.action-btn.view:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.action-btn.start {
  background: var(--primary-color);
  color: white;
}

.action-btn.start:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .homework-container {
    padding: 0;
  }

  .dashboard-card.homework-list {
    border-radius: 12px;
    margin: 0;
  }

  .homework-filters {
    position: sticky;
    top: var(--header-height);
    z-index: 1100;
    background: var(--card-bg);
    margin: 0;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
  }

  .homework-item {
    flex-direction: column;
    padding: 16px;
  }

  .homework-meta {
    flex-direction: column;
    gap: 8px;
  }

  .homework-actions {
    margin-top: 16px;
    width: 100%;
  }

  .action-btn {
    flex: 1;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .homework-filters {
    padding: 12px;
    gap: 8px;
  }

  .filter-btn {
    padding: 6px 12px;
    font-size: 12px;
  }

  .homework-item {
    padding: 12px;
  }

  .homework-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .homework-meta {
    gap: 6px;
  }
}

/* Fix for iOS momentum scrolling */
.homework-filters {
  -webkit-overflow-scrolling: touch;
}

/* Prevent content shift when scrollbar appears */
.homework-container {
  scrollbar-gutter: stable;
}

/* Add safe area insets support */
@supports (padding: max(0px)) {
  .homework-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Exams Styles */
.exams-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.exam-filters {
  display: flex;
  gap: 12px;
  margin: -16px -24px 24px -24px;
  padding: 16px 24px;
  background: var(--card-bg);
  position: sticky;
  top: 0;
  z-index: 10;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  border-bottom: 1px solid var(--border-color);
}

.exam-filters::-webkit-scrollbar {
  display: none;
}

.exam-content-wrapper {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.exam-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.exam-date {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  padding-left: 4px;
}

.exam-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-color);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  position: relative;
  transition: all 0.3s ease;
}

.exam-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.exam-status-indicator {
  width: 4px;
  height: 100%;
  background: var(--primary-color);
  border-radius: 2px;
  position: absolute;
  left: 0;
  top: 0;
}

.exam-item.upcoming .exam-status-indicator {
  background: var(--primary-color);
}

.exam-item.completed .exam-status-indicator {
  background: #10b981;
}

.exam-item.missed .exam-status-indicator {
  background: #ef4444;
}

.exam-main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.exam-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.exam-header h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-color);
}

.exam-type {
  font-size: 12px;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 4px;
  background: var(--hover-color);
  color: var(--primary-color);
}

.exam-result {
  font-size: 14px;
  font-weight: 600;
  color: #10b981;
}

.exam-status {
  font-size: 12px;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 4px;
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.exam-details {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.exam-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.exam-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.exam-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
}

.meta-item i {
  font-size: 14px;
}

.exam-resources {
  background: var(--hover-color);
  padding: 12px;
  border-radius: 8px;
  margin-top: 8px;
}

.exam-resources h5 {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 8px;
}

.exam-resources ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

.exam-resources li {
  font-size: 12px;
  color: var(--text-muted);
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.exam-resources li::before {
  content: "•";
  color: var(--primary-color);
}

.exam-analysis {
  display: flex;
  gap: 16px;
  padding: 12px;
  background: var(--hover-color);
  border-radius: 8px;
}

.analysis-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.analysis-item span {
  font-size: 12px;
  color: var(--text-muted);
}

.analysis-item strong {
  font-size: 16px;
  font-weight: 600;
}

.analysis-item strong.correct {
  color: #10b981;
}

.analysis-item strong.wrong {
  color: #ef4444;
}

.analysis-item strong.empty {
  color: var(--text-muted);
}

.exam-actions {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  white-space: nowrap;
}

.action-btn.prepare {
  background: var(--primary-color);
  color: white;
}

.action-btn.prepare:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.action-btn.review {
  background: var(--hover-color);
  color: var(--primary-color);
}

.action-btn.review:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.action-btn.makeup {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.action-btn.makeup:hover {
  background: #ef4444;
  color: white;
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .exams-container {
    padding: 0;
  }

  .dashboard-card.exams-list {
    border-radius: 12px;
    margin: 0;
  }

  .exam-filters {
    position: sticky;
    top: var(--header-height);
    z-index: 1100;
    background: var(--card-bg);
    margin: 0;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
  }

  .exam-item {
    flex-direction: column;
    padding: 16px;
  }

  .exam-meta {
    flex-direction: column;
    gap: 8px;
  }

  .exam-actions {
    margin-top: 16px;
    width: 100%;
  }

  .action-btn {
    flex: 1;
    justify-content: center;
  }

  .exam-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .exam-analysis {
    overflow-x: auto;
    padding: 12px 8px;
  }
}

@media (max-width: 480px) {
  .exam-filters {
    padding: 12px;
    gap: 8px;
  }

  .filter-btn {
    padding: 6px 12px;
    font-size: 12px;
  }

  .exam-item {
    padding: 12px;
  }

  .exam-resources {
    padding: 8px;
  }

  .exam-analysis {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* Fix for iOS momentum scrolling */
.exam-filters {
  -webkit-overflow-scrolling: touch;
}

/* Prevent content shift when scrollbar appears */
.exams-container {
  scrollbar-gutter: stable;
}

/* Add safe area insets support */
@supports (padding: max(0px)) {
  .exams-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Responsive fixes for top bar */
@media (max-width: 768px) {
  .top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1200;
  }

  .content {
    padding-top: calc(var(--header-height) + 16px);
  }

  .exam-filters {
    top: var(--header-height);
    position: sticky;
  }
}

/* Enhanced touch targets for mobile */
@media (max-width: 768px) {
  .action-btn,
  .filter-btn {
    min-height: 44px;
  }
}

/* Smooth transitions */
.exam-item,
.action-btn,
.filter-btn {
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

/* Schedule Page Styles */
.schedule-container {
  display: flex;
  gap: 24px;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

.schedule-card {
  flex: 1;
  margin: 0;
}

.schedule-sidebar {
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.schedule-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.schedule-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-color);
}

.schedule-btn:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.current-week {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  padding: 8px 16px;
  background: var(--hover-color);
  border-radius: 6px;
}

.schedule-timeline {
  position: relative;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.timeline-header {
  display: flex;
  position: relative;
}

.timeline-hours {
  width: 60px;
  position: sticky;
  left: 0;
  background: var(--card-bg);
  z-index: 1;
  border-right: 1px solid var(--border-color);
}

.hour-label {
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

.timeline-days {
  display: flex;
  flex: 1;
  min-width: 100%;
}

.day-column {
  flex: 1;
  min-width: 200px;
  border-right: 1px solid var(--border-color);
  position: relative;
}

.day-header {
  height: 60px;
  padding: 12px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: sticky;
  top: 0;
  background: var(--card-bg);
  z-index: 1;
}

.day-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.day-date {
  font-size: 12px;
  color: var(--text-muted);
}

.day-events {
  position: relative;
  height: 600px;
}

.schedule-event {
  position: absolute;
  left: 4px;
  right: 4px;
  padding: 8px;
  border-radius: 6px;
  font-size: 12px;
  transition: all 0.2s ease;
  cursor: pointer;
  overflow: hidden;
}

.event-content {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.event-content h4 {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text-color);
}

.event-content p {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Upcoming Events Styles */
.upcoming-event-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.upcoming-event {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.upcoming-event:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.event-time {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 60px;
}

.event-time .time {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.event-time .duration {
  font-size: 11px;
  color: var(--text-muted);
}

.event-info {
  flex: 1;
}

.event-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.event-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.event-details-btn {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.event-details-btn:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

/* Schedule Summary Styles */
.summary-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.summary-stat {
  background: var(--bg-color);
  padding: 16px;
  border-radius: 8px;
  text-align: center;
}

.summary-stat .stat-value {
  font-size: 24px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 4px;
}

.summary-stat .stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

.course-distribution {
  margin-top: 24px;
}

.course-distribution h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 16px;
}

.distribution-item {
  margin-bottom: 12px;
}

.distribution-info {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin-bottom: 4px;
}

.course-name {
  color: var(--text-color);
}

.course-hours {
  color: var(--text-muted);
}

.distribution-bar {
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}

.distribution-progress {
  height: 100%;
  background: var(--primary-color);
  border-radius: 3px;
  transition: width 0.3s ease;
}

/* Responsive Adjustments */
@media (max-width: 1200px) {
  .schedule-container {
    flex-direction: column;
  }

  .schedule-sidebar {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .schedule-container {
    padding: 0;
  }

  .schedule-card {
    margin: 0;
    border-radius: 12px;
  }

  .schedule-actions {
    flex-wrap: wrap;
    justify-content: center;
  }

  .schedule-timeline {
    margin: 0 -16px;
  }

  .timeline-hours {
    width: 50px;
  }

  .day-column {
    min-width: 150px;
  }

  .day-header {
    padding: 8px;
  }

  .schedule-event {
    left: 2px;
    right: 2px;
    padding: 6px;
  }

  .event-content h4 {
    font-size: 12px;
  }

  .event-content p {
    font-size: 10px;
  }
}

@media (max-width: 480px) {
  .schedule-btn {
    padding: 6px 12px;
    font-size: 12px;
  }

  .current-week {
    font-size: 12px;
    padding: 6px 12px;
  }

  .day-column {
    min-width: 120px;
  }

  .schedule-event {
    font-size: 10px;
  }
}

/* Touch Device Optimizations */
@media (hover: none) {
  .schedule-event {
    -webkit-tap-highlight-color: transparent;
  }

  .schedule-event:active {
    transform: scale(0.98);
  }
}

/* iOS Safe Area Support */
@supports (padding: max(0px)) {
  .schedule-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Scrollbar Styling */
.schedule-timeline::-webkit-scrollbar {
  height: 8px;
}

.schedule-timeline::-webkit-scrollbar-track {
  background: var(--bg-color);
  border-radius: 4px;
}

.schedule-timeline::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

.schedule-timeline::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Library Styles */
.library-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.library-header {
  margin-bottom: 24px;
  grid-column: 1 / -1;
}

.search-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 16px;
}

.search-bar i {
  color: var(--text-muted);
  font-size: 20px;
}

.search-bar input {
  flex: 1;
  border: none;
  background: none;
  color: var(--text-color);
  font-size: 14px;
  outline: none;
}

.search-bar input::placeholder {
  color: var(--text-muted);
}

.filter-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-toggle:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.filter-panel {
  margin-top: 16px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  display: none;
}

.filter-panel.active {
  display: block;
  animation: slideDown 0.3s ease forwards;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.filter-group {
  margin-bottom: 16px;
}

.filter-group h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 8px;
}

.filter-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.filter-option input {
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.filter-option span {
  font-size: 14px;
  color: var(--text-muted);
}

.filter-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 16px;
}

.filter-actions button {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.clear-filters {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.clear-filters:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.apply-filters {
  background: var(--primary-color);
  border: none;
  color: white;
}

.apply-filters:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.library-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.library-section {
  width: 100%;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.section-header h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
}

.section-header h3 i {
  color: var(--primary-color);
}

.view-all {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.view-all:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.book-card {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  transition: all 0.2s ease;
}

.book-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.book-cover {
  width: 60px;
  height: 80px;
  background: var(--hover-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.book-cover i {
  font-size: 24px;
  color: var(--primary-color);
}

.book-info h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 8px;
}

.book-info .author {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.book-meta {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.book-meta span {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 4px;
  background: var(--hover-color);
  color: var(--primary-color);
}

.book-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}

.book-stats span {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-muted);
}

.book-stats i {
  color: var(--primary-color);
}

.book-actions {
  display: flex;
  gap: 12px;
}

.action-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.action-btn.primary {
  background: var(--primary-color);
  border: none;
  color: white;
}

.action-btn.primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.action-btn.secondary {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.action-btn.secondary:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.book-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.book-list-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.book-list-item:hover {
  transform: translateX(4px);
  background: var(--hover-color);
}

.book-thumbnail {
  width: 40px;
  height: 40px;
  background: var(--card-bg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

.book-details {
  flex: 1;
}

.book-details h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.progress {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.progress-bar {
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary-color);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.continue-reading {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.continue-reading:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateX(2px);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.category-card {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background: var(--hover-color);
}

.category-card i {
  font-size: 32px;
  margin-bottom: 16px;
  color: var(--primary-color);
}

.category-card h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 8px;
}

.category-card span {
  font-size: 13px;
  color: var(--text-muted);
}

.library-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.reading-stats {
  padding: 20px;
}

.reading-stats h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 20px;
}

.reading-stats h3 i {
  color: var(--primary-color);
}

.stats-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 16px;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 24px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

.reading-list {
  padding: 20px;
}

.reading-list h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 20px;
}

.reading-list h3 i {
  color: var(--primary-color);
}

.reading-list-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.reading-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.reading-list-item:hover {
  transform: translateX(4px);
  background: var(--hover-color);
}

.reading-list-item .book-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.reading-list-item .book-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.start-reading {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.start-reading:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Responsive Adjustments */
@media (max-width: 1200px) {
  .library-container {
    grid-template-columns: 1fr;
  }

  .library-sidebar {
    order: -1;
  }

  .reading-stats .stats-content {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .library-container {
    padding: 0 16px;
  }

  .book-grid {
    grid-template-columns: 1fr;
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .filter-options {
    grid-template-columns: 1fr;
  }

  .book-actions {
    flex-direction: column;
  }

  .reading-stats .stats-content {
    grid-template-columns: repeat(3, 1fr);
  }

  .search-bar {
    flex-wrap: wrap;
  }

  .filter-toggle {
    width: 100%;
    justify-content: center;
    margin-top: 8px;
  }
}

@media (max-width: 480px) {
  .library-container {
    padding: 0 12px;
  }

  .category-grid {
    grid-template-columns: 1fr;
  }

  .reading-stats .stats-content {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .book-list-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .continue-reading {
    align-self: flex-end;
  }

  .reading-list-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .start-reading {
    width: 100%;
    text-align: center;
  }
}

/* Smooth scrolling and transitions */
.library-container * {
  transition: all 0.2s ease;
}

/* Enhanced touch targets for mobile */
@media (max-width: 768px) {
  .action-btn,
  .filter-toggle,
  .view-all,
  .continue-reading,
  .start-reading {
    min-height: 44px;
  }
}

/* Fix for iOS momentum scrolling */
.book-list,
.reading-list-items {
  -webkit-overflow-scrolling: touch;
}

/* Safe area insets support */
@supports (padding: max(0px)) {
  .library-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Documents Page Styles */
.documents-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.documents-header {
  margin-bottom: 24px;
  grid-column: 1 / -1;
}

.documents-search {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 16px;
}

.documents-search i {
  color: var(--text-muted);
  font-size: 20px;
}

.documents-search input {
  flex: 1;
  border: none;
  background: none;
  color: var(--text-color);
  font-size: 14px;
  outline: none;
}

.documents-search input::placeholder {
  color: var(--text-muted);
}

.documents-filters {
  display: flex;
  gap: 12px;
  margin: 16px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 8px;
}

.documents-filters::-webkit-scrollbar {
  display: none;
}

.document-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.document-card {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.document-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.document-icon {
  width: 48px;
  height: 48px;
  background: var(--hover-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--primary-color);
  font-size: 24px;
}

.document-info h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.document-info p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.document-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

.document-size {
  display: flex;
  align-items: center;
  gap: 4px;
}

.document-date {
  display: flex;
  align-items: center;
  gap: 4px;
}

.documents-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.storage-info {
  padding: 20px;
}

.storage-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.storage-header i {
  color: var(--primary-color);
}

.storage-header h3 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
}

.storage-progress {
  margin-bottom: 16px;
}

.storage-bars {
  height: 8px;
  background: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
}

.storage-used {
  height: 100%;
  background: var(--primary-color);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.storage-details {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
}

.storage-types {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.storage-type {
  background: var(--bg-color);
  padding: 12px;
  border-radius: 8px;
  text-align: center;
}

.storage-type i {
  font-size: 24px;
  margin-bottom: 8px;
  color: var(--primary-color);
}

.storage-type .type-name {
  font-size: 13px;
  color: var(--text-color);
  margin-bottom: 4px;
}

.storage-type .type-size {
  font-size: 12px;
  color: var(--text-muted);
}

.recent-files {
  padding: 20px;
}

.recent-files-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.recent-files-header h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
}

.recent-files-header i {
  color: var(--primary-color);
}

.recent-file-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.recent-file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.recent-file-item:hover {
  transform: translateX(4px);
  background: var(--hover-color);
}

.recent-file-icon {
  width: 36px;
  height: 36px;
  background: var(--hover-color);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

.recent-file-info {
  flex: 1;
  min-width: 0;
}

.recent-file-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.recent-file-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.recent-file-actions {
  display: flex;
  gap: 8px;
}

.recent-file-btn {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.recent-file-btn:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.shared-with-me {
  padding: 20px;
}

.shared-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.shared-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.shared-item:hover {
  transform: translateX(4px);
  background: var(--hover-color);
}

.shared-by {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.shared-by img {
  width: 20px;
  height: 20px;
  border-radius: 50%;
}

@media (max-width: 1200px) {
  .documents-container {
    grid-template-columns: 1fr;
  }

  .documents-sidebar {
    order: -1;
  }

  .storage-types {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 768px) {
  .documents-container {
    padding: 0 16px;
  }

  .storage-types {
    grid-template-columns: repeat(2, 1fr);
  }

  .document-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }

  .document-card {
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .documents-container {
    padding: 0 12px;
  }

  .storage-types {
    grid-template-columns: repeat(2, 1fr);
  }

  .documents-search {
    padding: 8px 12px;
  }

  .document-grid {
    grid-template-columns: 1fr;
  }

  .recent-file-actions {
    flex-direction: column;
  }
}

@supports (padding: max(0px)) {
  .documents-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Resources Page Styles */
.resources-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.resources-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 8px;
}

.resources-filters::-webkit-scrollbar {
  display: none;
}

.resource-groups {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.resource-section {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.resource-section h3 {
  font-size: 18px;
  font-weight: 500;
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: 8px;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.resource-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-color);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.resource-icon {
  width: 48px;
  height: 48px;
  background: var(--hover-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 24px;
  flex-shrink: 0;
}

.resource-content {
  flex: 1;
  min-width: 0;
}

.resource-content h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.resource-content p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.resource-meta {
  display: flex;
  gap: 12px;
  font-size: 12px;
}

.resource-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
}

.resource-meta .subject {
  color: var(--primary-color);
  background: var(--hover-color);
  padding: 2px 8px;
  border-radius: 12px;
}

.resource-link {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.resource-link:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateX(2px);
}

.resources-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.popular-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.popular-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.popular-icon {
  width: 40px;
  height: 40px;
  background: var(--hover-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 20px;
}

.popular-info {
  flex: 1;
  min-width: 0;
}

.popular-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.popular-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.popular-link {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.popular-link:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateX(2px);
}

@media (max-width: 1200px) {
  .resources-container {
    grid-template-columns: 1fr;
  }

  .resources-sidebar {
    order: -1;
  }
}

@media (max-width: 768px) {
  .resources-container {
    padding: 0 16px;
  }

  .resource-grid {
    grid-template-columns: 1fr;
  }

  .resource-card {
    padding: 16px;
  }

  .resources-filters {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
  }

  .filter-btn {
    font-size: 13px;
    padding: 6px 12px;
  }
}

@media (max-width: 480px) {
  .resources-container {
    padding: 0 12px;
  }

  .resource-card {
    flex-direction: column;
    align-items: flex-start;
    text-align: center;
  }

  .resource-icon {
    margin: 0 auto;
  }

  .resource-link {
    margin-left: auto;
    margin-right: auto;
    margin-top: 12px;
  }

  .resource-meta {
    justify-content: center;
  }
}

/* Safe area insets support */
@supports (padding: max(0px)) {
  .resources-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Enhanced touch targets for mobile */
@media (hover: none) {
  .resource-card,
  .popular-item,
  .resource-link,
  .popular-link {
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .resource-link,
  .popular-link {
    min-height: 44px;
    min-width: 44px;
  }
}

/* Tutoring Styles */
.tutoring-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.tutoring-header {
  grid-column: 1 / -1;
  margin-bottom: 24px;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
}

.header-content h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 500;
  color: var(--text-color);
}

.header-content h3 i {
  color: var(--primary-color);
}

.tutoring-actions {
  display: flex;
  gap: 12px;
}

.register-btn,
.filter-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.register-btn {
  background: var(--primary-color);
  color: white;
  border: none;
}

.register-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.filter-toggle {
  background: var(--bg-color);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.filter-toggle:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.tutoring-filters {
  padding: 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.filter-group {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.filter-group::-webkit-scrollbar {
  display: none;
}

.filter-btn,
.subject-btn {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  background: var(--bg-color);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.filter-btn:hover,
.subject-btn:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.filter-btn.active,
.subject-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.tutoring-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.tutoring-calendar {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
}

.calendar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
}

.calendar-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.calendar-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.calendar-btn:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.calendar-nav h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
}

.calendar-grid {
  padding: 20px;
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.calendar-day {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
}

.calendar-day:hover {
  background: var(--hover-color);
  border-color: var(--primary-color);
}

.calendar-day.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.calendar-day.active .day-name,
.calendar-day.active .day-date {
  color: white;
}

.day-name {
  font-size: 13px;
  color: var(--text-muted);
}

.day-date {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
}

.tutoring-slots {
  display: flex;
  gap: 20px;
}

.time-slots {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 60px;
}

.time-slot {
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-muted);
}

.slot-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.tutoring-slot {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
  height: 100px;
}

.tutoring-slot:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.tutoring-slot.available {
  border-left: 3px solid #10b981;
}

.tutoring-slot.registered {
  border-left: 3px solid var(--primary-color);
}

.tutoring-slot.completed {
  border-left: 3px solid #6b7280;
}

.slot-content h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.slot-content p {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.slot-status {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 500;
}

.available .slot-status {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.registered .slot-status {
  background: var(--hover-color);
  color: var(--primary-color);
}

.completed .slot-status {
  background: rgba(107, 114, 128, 0.1);
  color: #6b7280;
}

.tutoring-list {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
}

.list-header {
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
}

.list-header h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
}

.list-header h3 i {
  color: var(--primary-color);
}

.list-content {
  padding: 20px;
}

.tutoring-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
  margin-bottom: 12px;
  transition: all 0.2s ease;
}

.tutoring-item:last-child {
  margin-bottom: 0;
}

.tutoring-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.item-time {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 80px;
}

.item-time .time {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
}

.item-time .date {
  font-size: 12px;
  color: var(--text-muted);
}

.item-info {
  flex: 1;
}

.item-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.item-info .instructor {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.item-info .location {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.item-status {
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
}

.item-status.registered {
  background: var(--hover-color);
  color: var(--primary-color);
}

.item-status.completed {
  background: rgba(107, 114, 128, 0.1);
  color: #6b7280;
}

.item-actions {
  display: flex;
  gap: 8px;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.action-btn.cancel {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.action-btn.cancel:hover {
  background: #ef4444;
  color: white;
}

.action-btn.review {
  background: var(--bg-color);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.action-btn.review:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.tutoring-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.upcoming-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.upcoming-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.upcoming-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.upcoming-time {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 60px;
}

.upcoming-time .time {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.upcoming-time .date {
  font-size: 12px;
  color: var(--text-muted);
}

.upcoming-info {
  flex: 1;
}

.upcoming-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.upcoming-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.join-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--hover-color);
  color: var(--primary-color);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.events-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.events-header {
  grid-column: 1 / -1;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
}

.header-content h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 500;
  color: var(--text-color);
}

.events-filters {
  padding: 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.filter-group {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.filter-group::-webkit-scrollbar {
  display: none;
}

.filter-btn,
.category-btn {
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  background: var(--bg-color);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.filter-btn:hover,
.category-btn:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.filter-btn.active,
.category-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.event-card {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.event-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.event-banner {
  position: relative;
  padding: 20px;
  color: white;
  height: 120px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.event-date {
  background: rgba(255, 255, 255, 0.2);
  padding: 8px 12px;
  border-radius: 8px;
  text-align: center;
}

.event-date .day {
  font-size: 24px;
  font-weight: 600;
  display: block;
  line-height: 1;
}

.event-date .month {
  font-size: 14px;
  opacity: 0.9;
}

.event-category {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.2);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
}

.event-details {
  padding: 20px;
}

.event-details h4 {
  font-size: 18px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 8px;
}

.event-description {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}

.event-info {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.event-info span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.event-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.participants {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
}

.register-btn,
.join-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--primary-color);
  color: white;
  border: none;
}

.register-btn:hover,
.join-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.registered-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  background: var(--hover-color);
  color: var(--primary-color);
  border: none;
  cursor: default;
}

.event-timeline {
  margin-top: 24px;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 20px;
}

.timeline-item {
  display: flex;
  gap: 20px;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 12px;
  transition: all 0.2s ease;
}

.timeline-item:hover {
  transform: translateX(4px);
  background: var(--hover-color);
}

.timeline-date {
  min-width: 60px;
  text-align: center;
}

.timeline-date .day {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-color);
  line-height: 1;
}

.timeline-date .month {
  font-size: 14px;
  color: var(--text-muted);
}

.timeline-content {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
}

.event-type {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
}

.event-type.academic {
  background: linear-gradient(45deg, #6366f1, #818cf8);
}

.event-type.cultural {
  background: linear-gradient(45deg, #EC4899, #F472B6);
}

.event-type.sports {
  background: linear-gradient(45deg, #10B981, #34D399);
}

.event-type.social {
  background: linear-gradient(45deg, #F59E0B, #FBBF24);
}

.registered-events {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px;
}

.registered-event {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.registered-event:hover {
  transform: translateX(4px);
  background: var(--hover-color);
}

.event-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--hover-color);
  color: var(--primary-color);
  font-size: 20px;
}

.event-info {
  flex: 1;
  min-width: 0;
}

.event-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.event-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.cancel-btn {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: #ef4444;
  cursor: pointer;
  transition: all 0.2s ease;
}

.cancel-btn:hover {
  background: #ef4444;
  color: white;
  border-color: #ef4444;
}

.mini-calendar {
  padding: 20px;
  /* Mini calendar styles will be added based on implementation */
}

@media (max-width: 1200px) {
  .events-container {
    grid-template-columns: 1fr;
  }

  .events-sidebar {
    order: -1;
  }
}

@media (max-width: 768px) {
  .events-container {
    padding: 0 16px;
  }

  .events-grid {
    grid-template-columns: 1fr;
  }

  .event-card {
    margin-bottom: 16px;
  }

  .timeline-item {
    flex-direction: column;
    gap: 12px;
  }

  .timeline-date {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: auto;
  }

  .timeline-date .day {
    font-size: 20px;
  }

  .event-info {
    flex-direction: column;
    gap: 8px;
  }

  .event-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .register-btn,
  .join-btn,
  .registered-btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .events-container {
    padding: 0 12px;
  }

  .header-content {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }

  .events-filters {
    padding: 12px;
  }

  .filter-btn,
  .category-btn {
    padding: 6px 12px;
    font-size: 13px;
  }

  .event-banner {
    height: 100px;
    padding: 16px;
  }

  .event-details {
    padding: 16px;
  }

  .timeline {
    padding: 16px;
  }
}

/* Enhanced touch targets for mobile */
@media (hover: none) {
  .filter-btn,
  .category-btn,
  .register-btn,
  .join-btn,
  .cancel-btn {
    min-height: 44px;
  }
}

/* Safe area insets support */
@supports (padding: max(0px)) {
  .events-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Clubs Page Styles */
.clubs-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.clubs-header {
  grid-column: 1 / -1;
}

.clubs-filters {
  padding: 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.filter-group {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.filter-group::-webkit-scrollbar {
  display: none;
}

.clubs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.club-card {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.club-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.club-banner {
  position: relative;
  padding: 24px;
  height: 120px;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.club-logo {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.club-category {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.2);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
}

.club-details {
  padding: 20px;
}

.club-details h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 8px;
}

.club-description {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}

.club-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}

.club-stats span {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.club-activities {
  background: var(--bg-color);
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.club-activities h5 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 8px;
}

.club-activities ul {
  list-style: none;
  padding: 0;
}

.club-activities li {
  font-size: 13px;
  color: var(--text-muted);
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.club-activities li::before {
  content: "•";
  color: var(--primary-color);
}

.club-footer {
  display: flex;
  justify-content: center;
}

.join-club-btn,
.joined-btn {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.join-club-btn {
  background: var(--primary-color);
  color: white;
  border: none;
}

.join-club-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.joined-btn {
  background: var(--hover-color);
  color: var(--primary-color);
  border: none;
  cursor: default;
}

.joined-clubs {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.joined-club {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.club-icon {
  width: 40px;
  height: 40px;
  background: var(--hover-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 20px;
}

.club-info {
  flex: 1;
  min-width: 0;
}

.club-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.club-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.leave-club {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: #ef4444;
  cursor: pointer;
  transition: all 0.2s ease;
}

.leave-club:hover {
  background: #ef4444;
  color: white;
  border-color: #ef4444;
}

.meetings-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.meeting-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.meeting-time {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 60px;
}

.meeting-time .time {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.meeting-time .date {
  font-size: 12px;
  color: var(--text-muted);
}

.meeting-info {
  flex: 1;
  min-width: 0;
}

.meeting-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.meeting-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.meeting-action {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--hover-color);
  color: var(--primary-color);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.meeting-action:hover {
  transform: translateX(2px);
}

.meeting-details {
  margin: 20px 0;
}

.detail-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-color);
}

.detail-item i {
  color: var(--primary-color);
}

@media (max-width: 1200px) {
  .clubs-container {
    grid-template-columns: 1fr;
  }

  .clubs-sidebar {
    order: -1;
  }
}

@media (max-width: 768px) {
  .clubs-container {
    padding: 0 16px;
  }

  .clubs-grid {
    grid-template-columns: 1fr;
  }

  .club-card {
    margin-bottom: 16px;
  }

  .clubs-filters {
    padding: 12px;
  }

  .filter-btn {
    padding: 6px 12px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .clubs-container {
    padding: 0 12px;
  }

  .club-banner {
    height: 100px;
    padding: 16px;
  }

  .club-stats {
    flex-direction: column;
    gap: 8px;
  }
}

/* Enhanced touch targets for mobile */
@media (hover: none) {
  .join-club-btn,
  .leave-club,
  .meeting-action {
    min-height: 44px;
  }
}

/* Safe area insets support */
@supports (padding: max(0px)) {
  .clubs-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Grades Page Styles */
.grades-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.overall-grades {
  grid-column: 1 / -1;
}

.overall-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.stat-item {
  background: var(--bg-color);
  padding: 24px;
  border-radius: 12px;
  text-align: center;
}

.stat-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
}

.semester-select {
  display: flex;
  gap: 12px;
}

.grades-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.grades-table {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.grade-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.grade-row.header {
  background: none;
  padding: 0 16px 12px;
  border-bottom: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.course-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.course-info i {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--hover-color);
  border-radius: 8px;
  color: var(--primary-color);
  font-size: 20px;
}

.course-info h4 {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.course-info p {
  font-size: 13px;
  color: var(--text-muted);
}

.grade-details {
  display: flex;
  align-items: center;
  gap: 24px;
}

.grade-details span {
  width: 48px;
  text-align: center;
  font-size: 14px;
  color: var(--text-color);
}

.grade-details .grade.final {
  font-weight: 500;
  color: var(--primary-color);
}

.grade-details .letter-grade {
  font-weight: 500;
  color: var(--primary-color);
}

.distribution-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  height: 200px;
  padding: 20px 0;
}

.distribution-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 60px;
}

.distribution-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.distribution-header .letter {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.distribution-header .count {
  font-size: 12px;
  color: var(--text-muted);
}

.distribution-bar {
  width: 40px;
  height: 120px;
  background: var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}

.distribution-bar .bar {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--primary-color);
  border-radius: 20px;
  transition: height 0.3s ease;
}

.semester-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.semester-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.semester-item:hover {
  transform: translateX(4px);
  background: var(--hover-color);
}

.semester-item.active {
  background: var(--hover-color);
  border: 1px solid var(--primary-color);
}

.semester-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.semester-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.semester-stats {
  display: flex;
  align-items: center;
  gap: 8px;
}

.semester-stats .gpa {
  font-size: 16px;
  font-weight: 500;
  color: var(--primary-color);
}

.alert-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.alert-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
}

.alert-item.warning {
  border-left: 3px solid #f59e0b;
}

.alert-item.success {
  border-left: 3px solid var(--primary-color);
}

.alert-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--hover-color);
  border-radius: 8px;
  font-size: 20px;
}

.alert-item.warning .alert-icon {
  color: #f59e0b;
}

.alert-item.success .alert-icon {
  color: var(--primary-color);
}

.alert-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.alert-info p {
  font-size: 12px;
  color: var(--text-muted);
}

@media (max-width: 1200px) {
  .grades-container {
    grid-template-columns: 1fr;
  }

  .grades-sidebar {
    order: -1;
  }
}

@media (max-width: 768px) {
  .grades-container {
    padding: 0 16px;
  }

  .overall-stats {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .grade-row {
    flex-direction: column;
    gap: 16px;
  }

  .grade-details {
    width: 100%;
    justify-content: space-between;
  }

  .distribution-grid {
    overflow-x: auto;
    padding-bottom: 20px;
  }

  .distribution-item {
    min-width: 60px;
  }
}

@media (max-width: 480px) {
  .grades-container {
    padding: 0 12px;
  }

  .course-info {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .semester-select {
    flex-wrap: wrap;
  }

  .filter-btn {
    width: 100%;
  }
}

/* Safe area insets support */
@supports (padding: max(0px)) {
  .grades-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Performance Page Styles */
.performance-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.performance-header {
  grid-column: 1 / -1;
  margin-bottom: 24px;
}

.performance-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.performance-overview {
  width: 100%;
}

.performance-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.performance-stats .stat-item {
  background: var(--bg-color);
  padding: 24px;
  border-radius: 12px;
  text-align: center;
}

.stat-item .trend {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 13px;
  margin-top: 8px;
}

.trend.positive {
  color: #10b981;
}

.trend.negative {
  color: #ef4444;
}

.performance-chart {
  background: var(--bg-color);
  padding: 24px;
  border-radius: 12px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.chart-header h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
}

.chart-legend {
  display: flex;
  gap: 16px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.performance-graph {
  width: 100%;
  height: 200px;
}

.graph-line {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.subject-card {
  background: var(--bg-color);
  padding: 24px;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.subject-icon {
  width: 48px;
  height: 48px;
  background: var(--hover-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 24px;
  margin-bottom: 16px;
}

.subject-info h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 16px;
}

.progress-ring {
  position: relative;
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
}

.progress-ring circle {
  fill: none;
  stroke-width: 3;
  transform: rotate(-90deg);
  transform-origin: center;
  transition: stroke-dashoffset 0.3s ease;
}

.progress-ring-circle-bg {
  stroke: var(--border-color);
}

.progress-ring-circle {
  stroke: var(--primary-color);
  stroke-dasharray: 151;
}

.progress-ring span {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.subject-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  text-align: center;
}

.subject-stats .stat {
  background: var(--card-bg);
  padding: 12px;
  border-radius: 8px;
}

.stat .value {
  display: block;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.stat .label {
  font-size: 12px;
  color: var(--text-muted);
}

.achievement-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.achievement-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.achievement-progress {
  position: relative;
  width: 40px;
  height: 40px;
}

.achievement-progress i {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #10b981;
  font-size: 16px;
}

.achievement-progress span {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-color);
}

.achievement-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.achievement-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.study-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.study-stats .stat-item {
  background: var(--bg-color);
  padding: 16px;
  border-radius: 8px;
  text-align: center;
}

.study-distribution h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 16px;
}

.distribution-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.distribution-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.distribution-info {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

.distribution-info .subject {
  color: var(--text-color);
}

.distribution-info .hours {
  color: var(--text-muted);
}

.distribution-bar {
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}

.distribution-bar .progress {
  height: 100%;
  background: var(--primary-color);
  border-radius: 3px;
  transition: width 0.3s ease;
}

@media (max-width: 1200px) {
  .performance-container {
    grid-template-columns: 1fr;
  }

  .performance-sidebar {
    order: -1;
  }
}

@media (max-width: 768px) {
  .performance-container {
    padding: 0 16px;
  }

  .performance-stats {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .subject-grid {
    grid-template-columns: 1fr;
  }

  .chart-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .performance-container {
    padding: 0 12px;
  }

  .subject-stats {
    grid-template-columns: 1fr;
  }

  .achievement-item {
    flex-direction: column;
    text-align: center;
  }

  .study-stats {
    grid-template-columns: 1fr;
  }
}

/* Safe area insets support */
@supports (padding: max(0px)) {
  .performance-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Attendance Page Styles */
.attendance-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.overall-attendance {
  grid-column: 1 / -1;
}

.attendance-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.attendance-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.attendance-table {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.attendance-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.attendance-row.header {
  background: none;
  padding: 0 16px 12px;
  border-bottom: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.attendance-row.warning {
  border-left: 3px solid #f59e0b;
}

.attendance-details {
  display: flex;
  align-items: center;
  gap: 24px;
}

.attendance-details span {
  width: 48px;
  text-align: center;
  font-size: 14px;
  color: var(--text-color);
}

.attendance-details .rate {
  color: var(--primary-color);
  font-weight: 500;
}

.attendance-details .absence {
  color: #ef4444;
}

.attendance-details .remaining {
  color: #10b981;
}

.calendar-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.day-header {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  padding: 8px;
}

.calendar-dates {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.date {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  font-size: 14px;
  color: var(--text-color);
  background: var(--bg-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.date:hover:not(.disabled):not(.future) {
  background: var(--hover-color);
  color: var(--primary-color);
}

.date.disabled {
  color: var(--text-muted);
  background: none;
  cursor: not-allowed;
}

.date.future {
  color: var(--text-muted);
  background: none;
  cursor: default;
}

.date.absent {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  font-weight: 500;
}

.date.absent[title="Rapor"] {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.history-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.history-item:hover {
  transform: translateX(4px);
  background: var(--hover-color);
}

.date-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 80px;
}

.date-info .date {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  height: auto;
  background: none;
}

.date-info .day {
  font-size: 12px;
  color: var(--text-muted);
}

.absence-info {
  flex: 1;
}

.absence-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.absence-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.details-btn {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.details-btn:hover {
  background: var(--hover-color);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.alert-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.alert-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
}

.alert-item.warning {
  border-left: 3px solid #f59e0b;
}

.alert-item.info {
  border-left: 3px solid var(--primary-color);
}

.alert-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--hover-color);
  border-radius: 8px;
  font-size: 20px;
}

.alert-item.warning .alert-icon {
  color: #f59e0b;
}

.alert-item.info .alert-icon {
  color: var(--primary-color);
}

.alert-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.alert-info p {
  font-size: 12px;
  color: var(--text-muted);
}

@media (max-width: 1200px) {
  .attendance-container {
    grid-template-columns: 1fr;
  }

  .attendance-sidebar {
    order: -1;
  }
}

@media (max-width: 768px) {
  .attendance-container {
    padding: 0 16px;
  }

  .attendance-stats {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .attendance-row {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .attendance-details {
    width: 100%;
    justify-content: space-between;
  }

  .history-item {
    flex-direction: column;
    text-align: center;
  }

  .details-btn {
    margin-top: 8px;
  }
}

@media (max-width: 480px) {
  .attendance-container {
    padding: 0 12px;
  }

  .calendar-dates {
    gap: 4px;
  }

  .date {
    height: 32px;
    font-size: 13px;
  }
}

/* Safe area insets support */
@supports (padding: max(0px)) {
  .attendance-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}

/* Support Page Styles */
.support-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* FAQ Section */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-color);
  border-radius: 8px;
  overflow: hidden;
}

.faq-question {
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.faq-question:hover {
  background: var(--hover-color);
}

.faq-question h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
}

.faq-question i {
  color: var(--text-muted);
  transition: transform 0.3s ease;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding: 0 16px 16px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Support Form */
.support-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.form-input {
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  color: var(--text-color);
  font-size: 14px;
  transition: all 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--hover-color);
}

.priority-options {
  display: flex;
  gap: 12px;
}

.priority-option {
  flex: 1;
  position: relative;
}

.priority-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.priority-label {
  display: block;
  padding: 8px;
  text-align: center;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.priority-label.low {
  background: rgba(16, 185, 129, 0.1);
  color: #10B981;
}

.priority-label.medium {
  background: rgba(245, 158, 11, 0.1);
  color: #F59E0B;
}

.priority-label.high {
  background: rgba(239, 68, 68, 0.1);
  color: #EF4444;
}

.priority-option input:checked + .priority-label.low {
  background: #10B981;
  color: white;
}

.priority-option input:checked + .priority-label.medium {
  background: #F59E0B;
  color: white;
}

.priority-option input:checked + .priority-label.high {
  background: #EF4444;
  color: white;
}

.file-upload {
  position: relative;
}

.file-upload input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.file-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-color);
  border: 1px dashed var(--border-color);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.file-label:hover {
  background: var(--hover-color);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.submit-ticket {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.submit-ticket:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* Tickets List */
.tickets-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ticket-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.ticket-item:hover {
  transform: translateX(4px);
  background: var(--hover-color);
}

.ticket-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #EF4444;
}

.ticket-status.active {
  background: #10B981;
}

.ticket-info {
  flex: 1;
}

.ticket-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.ticket-info p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.ticket-meta {
  display: flex;
  gap: 12px;
  font-size: 12px;
}

.ticket-meta .date {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.ticket-meta .priority {
  padding: 2px 8px;
  border-radius: 12px;
}

.priority.high {
  background: rgba(239, 68, 68, 0.1);
  color: #EF4444;
}

.priority.medium {
  background: rgba(245, 158, 11, 0.1);
  color: #F59E0B;
}

.view-ticket {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.view-ticket:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Contact Info */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-color);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.contact-item:hover {
  transform: translateY(-2px);
  background: var(--hover-color);
}

.contact-item i {
  font-size: 24px;
  color: var(--primary-color);
}

.contact-details h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 4px;
}

.contact-details p {
  font-size: 13px;
  color: var(--text-color);
  margin-bottom: 4px;
}

.contact-details span {
  font-size: 12px;
  color: var(--text-muted);
}

/* Ticket Details Modal */
.ticket-details {
  text-align: left;
  margin: 16px 0;
}

.ticket-thread {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}

.message {
  padding: 12px;
  border-radius: 8px;
  font-size: 13px;
}

.message.user {
  background: var(--hover-color);
  margin-right: 24px;
}

.message.support {
  background: var(--bg-color);
  margin-left: 24px;
}

.message .time {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Responsive Adjustments */
@media (max-width: 1200px) {
  .support-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .support-container {
    padding: 0 16px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .priority-options {
    flex-direction: column;
  }

  .ticket-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .view-ticket {
    align-self: flex-end;
    margin-top: -32px;
  }
}

@media (max-width: 480px) {
  .support-container {
    padding: 0 12px;
  }

  .contact-item {
    flex-direction: column;
    text-align: center;
  }
}

/* Safe area insets support */
@supports (padding: max(0px)) {
  .support-container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }
}