/* Custom styles for Learning Management System */

:root {
  /* Light mode variables */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --text-primary: #333333;
  --text-secondary: #6c757d;
  --border-color: #dee2e6;
  --primary-color: #0d6efd;
  --secondary-color: #6c757d;
  --success-color: #198754;
  --info-color: #0dcaf0;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --light-color: #f8f9fa;
  --dark-color: #212529;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --highlight-color: rgba(13, 110, 253, 0.1);
  --highlight-color-strong: rgba(13, 110, 253, 0.25);
}

[data-bs-theme="dark"] {
  /* Dark mode variables */
  --bg-primary: #212529;
  --bg-secondary: #343a40;
  --text-primary: #f8f9fa;
  --text-secondary: #adb5bd;
  --border-color: #495057;
  --shadow-color: rgba(0, 0, 0, 0.3);
  --highlight-color: rgba(13, 110, 253, 0.2);
  --highlight-color-strong: rgba(13, 110, 253, 0.35);
}

/* Global styles */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

#main-content {
  flex: 1;
  padding-bottom: 2rem;
}

/* Navbar styling */
.navbar {
  box-shadow: 0 2px 15px var(--shadow-color);
  padding: 0.5rem 0.75rem;
  max-width: 100vw;
  overflow: hidden;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
  margin-right: 0.5rem;
}

/* More compact navbar items */
.navbar-nav .nav-link {
  padding: 0.4rem 0.6rem;
  position: relative;
  font-weight: 500;
  transition: color 0.2s ease;
  font-size: 0.9rem;
}

.navbar-nav .nav-link:hover {
  color: var(--primary-color);
}

.navbar-nav .nav-link.active {
  color: var(--primary-color);
}

.navbar-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0.75rem;
  right: 0.75rem;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 3px 3px 0 0;
}

/* Make dropdown toggles more compact */
.dropdown-toggle {
  padding-right: 1.25rem !important;
}

.dropdown-toggle::after {
  right: 0.5rem;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

/* Make navbar items wrap better on small screens */
@media (max-width: 1199.98px) {
  .navbar-nav .nav-link {
    padding: 0.4rem 0.5rem;
    font-size: 0.85rem;
  }
  
  .navbar-nav .nav-link .fas {
    font-size: 0.9rem;
  }
  
  .navbar-brand {
    font-size: 1.1rem;
  }
  
  /* Hide text, show only icons on medium screens */
  .navbar-nav .nav-link .nav-text-optional {
    display: none;
  }
}

/* Optimize for tablets */
@media (max-width: 991.98px) {
  .navbar-toggler {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
  }
  .navbar-collapse {
    max-height: calc(100vh - 60px);
    overflow-y: auto;
  }
}

/* Additional navbar improvements for medium screens */
@media (min-width: 992px) and (max-width: 1199.98px) {
  /* Create a scrollable navbar when needed */
  .navbar-nav-scroll {
    max-width: calc(100vw - 350px); /* Adjust based on other navbar elements */
    overflow-x: auto;
    overflow-y: hidden;
    flex-wrap: nowrap;
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
    margin-right: 0.5rem;
  }
  
  /* Hide scrollbar */
  .navbar-nav-scroll::-webkit-scrollbar {
    display: none;
  }
  
  /* Prevent text wrapping in navbar items */
  .navbar-nav-scroll .nav-link {
    white-space: nowrap;
  }
}

/* Cards styling */
.card {
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  box-shadow: 0 8px 15px var(--shadow-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
  background-color: var(--bg-primary) !important;
  margin-bottom: 1.5rem;
}

.card-header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 20px var(--shadow-color);
}

/* Dashboard cards */
.dashboard-card {
  border-left: 4px solid var(--primary-color);
  border-radius: 0.5rem;
}

.dashboard-card-icon {
  font-size: 2.5rem;
  opacity: 0.8;
}

.border-left-primary,
.border-left-success,
.border-left-info,
.border-left-warning {
  border-left: 0.25rem solid transparent;
  border-radius: 0.75rem;
  overflow: hidden;
}

.border-left-primary {
  border-left-color: var(--primary-color);
}

.border-left-success {
  border-left-color: var(--success-color);
}

.border-left-info {
  border-left-color: var(--info-color);
}

.border-left-warning {
  border-left-color: var(--warning-color);
}

/* Calendar styling */
.fc-event {
  cursor: pointer;
  border-radius: 4px;
  box-shadow: 0 2px 4px var(--shadow-color);
}

.fc-day-today {
  background-color: var(--highlight-color) !important;
}

/* Form styling */
.form-control, .form-select {
  border-radius: 0.5rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.25rem var(--highlight-color-strong);
}

.btn {
  border-radius: 0.5rem;
  padding: 0.6rem 1.25rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-primary {
  box-shadow: 0 4px 8px rgba(13, 110, 253, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 12px rgba(13, 110, 253, 0.5);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Quiz styling */
.quiz-timer {
  font-size: 1.2rem;
  font-weight: bold;
}

.question-container {
  border-left: 4px solid var(--primary-color);
  padding-left: 1rem;
  margin-bottom: 2rem;
  background-color: var(--bg-primary);
  padding: 1.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 4px 10px var(--shadow-color);
}

/* Session status badges */
.badge {
  padding: 0.5em 0.75em;
  font-weight: 500;
  border-radius: 0.5rem;
}

.badge-scheduled {
  background-color: var(--primary-color);
}

.badge-completed {
  background-color: var(--success-color);
}

.badge-canceled {
  background-color: var(--danger-color);
}

.badge-rescheduled {
  background-color: var(--warning-color);
  color: var(--dark-color);
}

/* Tables */
.table {
  color: var(--text-primary);
  border-color: var(--border-color);
}

.table-striped > tbody > tr:nth-of-type(odd) {
  background-color: var(--highlight-color);
}

/* Theme toggle */
.theme-toggle {
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.theme-toggle:hover {
  background-color: var(--highlight-color);
}

/* Footer styling */
.footer {
  margin-top: auto;
  padding: 1.5rem 0;
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
}

/* Responsive tweaks */
@media (max-width: 767px) {
  .dashboard-stats {
    margin-bottom: 1.5rem;
  }
  
  .card {
    margin-bottom: 1rem;
  }
  
  .table-responsive {
    border-radius: 0.75rem;
    overflow: hidden;
  }
}

/* Accessibility improvements */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip to main content for keyboard users */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color);
  color: white;
  padding: 8px;
  z-index: 100;
  transition: top 0.3s ease;
}

.skip-to-content:focus {
  top: 0;
}

.navbar .container-fluid {
  flex-wrap: nowrap;
}

/* Sidebar Navigation */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 250px;
  background-color: var(--bg-primary);
  box-shadow: 2px 0 10px var(--shadow-color);
  z-index: 1030;
  transition: all 0.3s ease;
  overflow-y: auto;
  overflow-x: visible; /* Ensure the toggle button is visible */
  padding-top: 60px; /* Space for the top navbar */
  /* Add padding to avoid scrollbar covering content */
  padding-right: 10px;
  /* Customize scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

/* Customize scrollbar for WebKit browsers (Chrome, Safari) */
.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: 6px;
}

.sidebar-collapsed {
  width: 60px;
}

.sidebar .sidebar-brand {
  padding: 1rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.sidebar .sidebar-brand .sidebar-brand-icon {
  font-size: 1.75rem;
  color: var(--primary-color);
  text-align: center;
}

.sidebar .sidebar-brand .sidebar-brand-text {
  /* margin-left: 0.75rem; */
  font-weight: 700;
  font-size: 1.25rem;
  transition: opacity 0.3s ease;
}

.sidebar-collapsed .sidebar-brand-text {
  opacity: 0;
  width: 0;
  display: none;
}

.sidebar .nav-item {
  margin-bottom: 0.25rem;
  width: 100%;
}

.sidebar .nav-link {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  white-space: nowrap;
  transition: all 0.2s ease;
  border-radius: 0;
}

.sidebar-collapsed .nav-link {
  justify-content: center;
  /* padding: 0.75rem 0; */
}

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

.sidebar .nav-link.active {
  background-color: var(--highlight-color-strong);
  color: var(--primary-color);
  border-left: 3px solid var(--primary-color);
}

.sidebar-collapsed .nav-link.active {
  border-left: none;
  border-left-width: 0;
  border-bottom: 3px solid var(--primary-color);
}

.sidebar .nav-link .nav-icon {
  width: 20px;
  margin-right: 0.75rem;
  text-align: center;
  font-size: 0.9rem;
}

.sidebar-collapsed .nav-link .nav-icon {
  margin-right: 0;
  font-size: 1.1rem;
  width: auto;
}

.sidebar .nav-link span {
  transition: opacity 0.3s ease;
}

.sidebar-collapsed .nav-link span {
  opacity: 0;
  width: 0;
  display: none;
}

.sidebar-collapsed .dropdown-toggle::after {
  display: none;
}

.sidebar .dropdown-menu {
  position: relative;
  width: 100%;
  border: none;
  border-radius: 0;
  margin: 0;
  padding: 0;
  background-color: var(--bg-secondary);
  box-shadow: none;
}

.sidebar .dropdown-item {
  padding: 0.5rem 2.5rem;
  border-left: 1px solid var(--border-color);
  margin-left: 1.5rem;
}

.sidebar-collapsed .dropdown-menu {
  position: absolute;
  top: 0;
  left: 60px;
  width: 200px;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  box-shadow: 0 0.5rem 1rem var(--shadow-color);
}

.sidebar-collapsed .dropdown-item {
  margin-left: 0;
  padding: 0.5rem 1rem;
  border-left: none;
}

/* Sidebar toggler */
.sidebar-toggle {
  position: absolute;
  top: 15px;
  right: 0px;
  z-index: 1031;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 5px var(--shadow-color);
  transition: all 0.3s ease;
  transform: translateX(0);
}

.sidebar-collapsed .sidebar-toggle {
  right: -0px;
  transform: translateX(0);
}

/* Main content with sidebar */
.main-wrapper {
  display: flex;
  min-height: 100vh;
}

.content-wrapper {
  flex: 1;
  margin-left: 250px;
  transition: all 0.3s ease;
  width: calc(100% - 250px);
  min-width: 0; /* Prevents content from overflowing */
  overflow-x: hidden; /* Prevents horizontal scrolling */
}

.sidebar-collapsed + .content-wrapper {
  margin-left: 60px;
  width: calc(100% - 60px);
}

/* Top Navbar */
.top-navbar {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  height: 60px;
  background-color: var(--bg-primary);
  box-shadow: 0 2px 10px var(--shadow-color);
  z-index: 1020;
  display: flex;
  align-items: center;
  padding: 0 1rem;
}

.top-navbar-content {
  margin-left: auto;
  display: flex;
  align-items: center;
}

.search-box {
  position: relative;
  margin-right: 1rem;
}

.search-box input {
  padding-left: 2.5rem;
  border-radius: 20px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  width: 250px;
  transition: all 0.3s ease;
}

.search-box input:focus {
  width: 300px;
  box-shadow: 0 0 0 0.2rem var(--highlight-color);
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
}

/* Mobile adaptations */
@media (max-width: 991.98px) {
  .sidebar {
    transform: translateX(-100%);
    box-shadow: none;
  }
  
  .sidebar-visible {
    transform: translateX(0);
    box-shadow: 2px 0 10px var(--shadow-color);
  }
  
  .content-wrapper {
    margin-left: 0;
    width: 100%;
  }
  
  .sidebar-toggle {
    left: auto;
    right: 1rem;
  }
  
  .search-box input {
    width: 200px;
  }
  
  .search-box input:focus {
    width: 220px;
  }
  
  .top-navbar {
    left: 0 !important;
  }
}

/* Public page header styles */
.public-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--bg-primary);
  box-shadow: 0 2px 15px var(--shadow-color);
  z-index: 1020;
  padding: 0.5rem 0;
}

.public-header .brand {
  color: var(--text-primary);
  text-decoration: none;
}

.public-header .brand i {
  font-size: 1.5rem;
}

.public-header .theme-toggle {
  background-color: transparent;
  width: 30px;
  height: 30px;
}

.public-header .dropdown-menu {
  min-width: 150px;
}

/* Adjustments for full-width content on public pages */
.content-wrapper.w-100 {
  padding-top: 60px; /* Add padding to account for the fixed header */
}