/* ============================================
   DelVerse - Page Specific Styles
   ============================================ */

/* ============================================
   Navbar
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: white;
  border-bottom: 1px solid var(--gray-100);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar.transparent {
  background: transparent;
  border-bottom: none;
}

.navbar.transparent .nav-link,
.navbar.transparent .logo-text {
  color: white;
}

.navbar.transparent.scrolled {
  background: white;
}

.navbar.transparent.scrolled .nav-link,
.navbar.transparent.scrolled .logo-text {
  color: var(--gray-700);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.logo-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  color: white;
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--gray-900);
}

.logo-text span {
  color: var(--primary-500);
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.nav-link {
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--primary-500);
}

.nav-link.active {
  color: var(--primary-600);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.navbar-mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--gray-600);
  font-size: var(--font-size-xl);
  cursor: pointer;
}

/* Mobile Menu */
.navbar-mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: white;
  padding: var(--spacing-6);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
  z-index: var(--z-fixed);
}

.navbar-mobile-menu.open {
  transform: translateX(0);
}

.navbar-mobile-menu .nav-link {
  display: block;
  padding: var(--spacing-4) 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: var(--font-size-lg);
}

/* ============================================
   Sidebar (Dashboard)
   ============================================ */
.sidebar {
  position: fixed;
  top: 72px;
  left: 0;
  width: 260px;
  height: calc(100vh - 72px);
  background: white;
  border-right: 1px solid var(--gray-100);
  padding: var(--spacing-6);
  overflow-y: auto;
  z-index: var(--z-sticky);
  transition:
    transform var(--transition-normal),
    width var(--transition-normal),
    padding var(--transition-normal);
}

.sidebar-topbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--spacing-4);
}

.sidebar-collapse-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  border: 1px solid var(--gray-200);
  background: white;
  color: var(--gray-700);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2) var(--spacing-3);
  cursor: pointer;
}

.sidebar-collapse-btn:hover {
  border-color: var(--primary-300);
  color: var(--primary-700);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.sidebar-section {
  margin-bottom: var(--spacing-6);
}

.sidebar-section-title-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-bottom: var(--spacing-3);
}

.sidebar-section-title-text {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0;
}

.sidebar-section-title-toggle i {
  font-size: 12px;
  color: var(--gray-400);
  transition: transform var(--transition-fast);
}

.sidebar-section.is-collapsed .sidebar-section-title-toggle i {
  transform: rotate(-90deg);
}

.sidebar-section.is-collapsed .sidebar-section-links {
  display: none;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--gray-600);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.sidebar-link:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}

.sidebar-link.active {
  background: var(--primary-50);
  color: var(--primary-600);
}

.sidebar-link i {
  width: 20px;
  font-size: var(--font-size-lg);
}

.sidebar-link-badge {
  margin-left: auto;
  padding: var(--spacing-1) var(--spacing-2);
  background: var(--primary-100);
  color: var(--primary-700);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
}

.sidebar-help-card {
  margin-top: auto;
  background: var(--gradient-light);
  border: none;
}

.sidebar-help-card-body {
  text-align: center;
}

.sidebar-help-icon-wrap {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

.sidebar-help-icon-wrap i {
  color: white;
  font-size: 20px;
}

.sidebar-help-title {
  margin-bottom: 8px;
}

.sidebar-help-description {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 16px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--primary-900);
  color: white;
  padding: var(--spacing-16) 0 var(--spacing-8);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-12);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo-text {
  color: white;
  margin-bottom: var(--spacing-4);
}

.footer-description {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

.footer-social {
  display: flex;
  gap: var(--spacing-3);
  margin-top: var(--spacing-6);
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  color: white;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--primary-500);
  transform: translateY(-2px);
}

.footer-column h4 {
  color: white;
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-5);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.footer-links a {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
  color: var(--gray-500);
  font-size: var(--font-size-sm);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  padding: var(--spacing-20) 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--spacing-6);
  backdrop-filter: blur(10px);
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: white;
  line-height: 1.1;
  margin-bottom: var(--spacing-6);
}

.hero-title span {
  background: linear-gradient(135deg, var(--sky-300) 0%, var(--sky-100) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--primary-200);
  line-height: 1.7;
  margin-bottom: var(--spacing-8);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-12);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-12);
}

.hero-stat {
  text-align: left;
}

.hero-stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: white;
}

.hero-stat-label {
  font-size: var(--font-size-sm);
  color: var(--primary-200);
}

.hero-illustration {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 50%;
  max-width: 700px;
  opacity: 0.9;
}

/* Floating Elements Animation */
.hero-float {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-2xl);
  backdrop-filter: blur(10px);
  animation: float 6s ease-in-out infinite;
}

.hero-float:nth-child(1) {
  width: 100px;
  height: 100px;
  top: 20%;
  right: 10%;
  animation-delay: 0s;
}

.hero-float:nth-child(2) {
  width: 60px;
  height: 60px;
  top: 60%;
  right: 20%;
  animation-delay: 1s;
}

.hero-float:nth-child(3) {
  width: 80px;
  height: 80px;
  top: 40%;
  right: 5%;
  animation-delay: 2s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(5deg);
  }
}

/* ============================================
   Features Section
   ============================================ */
.features-section {
  padding: var(--spacing-24) 0;
  background: white;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-16);
}

.section-badge {
  display: inline-block;
  padding: var(--spacing-2) var(--spacing-4);
  background: var(--primary-100);
  color: var(--primary-700);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-4);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--gray-500);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

.feature-card {
  padding: var(--spacing-8);
  background: var(--gray-50);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  background: white;
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.feature-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-2xl);
  color: white;
  margin-bottom: var(--spacing-6);
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-3);
}

.feature-description {
  color: var(--gray-500);
  line-height: 1.7;
}

/* ============================================
   How It Works Section
   ============================================ */
.how-it-works {
  padding: var(--spacing-24) 0;
  background: var(--gradient-light);
}

.steps-container {
  display: flex;
  justify-content: space-between;
  position: relative;
}

.steps-container::before {
  content: "";
  position: absolute;
  top: 40px;
  left: 80px;
  right: 80px;
  height: 2px;
  background: var(--primary-200);
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  flex: 1;
  max-width: 250px;
}

.step-number {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-6);
  position: relative;
  z-index: 1;
}

.step-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-2);
}

.step-description {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
}

/* ============================================
   Categories Section
   ============================================ */
.categories-section {
  padding: var(--spacing-24) 0;
  background: white;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-6);
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-8);
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.category-card:hover {
  background: var(--primary-50);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.category-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-xl);
  color: white;
  margin-bottom: var(--spacing-4);
}

.category-name {
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: var(--spacing-1);
}

.category-count {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
}

/* ============================================
   Popular Classes Section
   ============================================ */
.popular-section {
  padding: var(--spacing-24) 0;
  background: var(--gray-50);
}

.classes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-6);
}

.class-card {
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.class-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.class-card-image {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.class-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.class-card:hover .class-card-image img {
  transform: scale(1.05);
}

.class-card-badge {
  position: absolute;
  top: var(--spacing-3);
  left: var(--spacing-3);
}

.class-card-favorite {
  position: absolute;
  top: var(--spacing-3);
  right: var(--spacing-3);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: var(--radius-full);
  color: var(--gray-400);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.class-card-favorite:hover,
.class-card-favorite.active {
  color: var(--error);
}

.class-card-body {
  padding: var(--spacing-5);
}

.class-card-category {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--primary-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-2);
}

.class-card-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-3);
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.class-card-tutor {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-3);
}

.class-card-tutor img {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.class-card-tutor-name {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
}

.class-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-3);
  border-top: 1px solid var(--gray-100);
}

.class-card-rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.class-card-rating i {
  color: #fbbf24;
  font-size: var(--font-size-sm);
}

.class-card-rating span {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-700);
}

.class-card-students {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
}

.class-card-price {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-600);
}

.class-card-price.free {
  color: var(--success);
}

.class-card-price-old {
  font-size: var(--font-size-sm);
  color: var(--gray-400);
  text-decoration: line-through;
  margin-right: var(--spacing-2);
}

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials-section {
  padding: var(--spacing-24) 0;
  background: white;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

.testimonial-card {
  padding: var(--spacing-8);
  background: var(--gray-50);
  border-radius: var(--radius-2xl);
  position: relative;
}

.testimonial-quote {
  font-size: 64px;
  color: var(--primary-200);
  position: absolute;
  top: var(--spacing-4);
  left: var(--spacing-6);
  line-height: 1;
  font-family: Georgia, serif;
}

.testimonial-content {
  font-size: var(--font-size-base);
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: var(--spacing-6);
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.testimonial-author img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.testimonial-author-name {
  font-weight: 600;
  color: var(--gray-900);
}

.testimonial-author-role {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  padding: var(--spacing-24) 0;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-4);
}

.cta-subtitle {
  font-size: var(--font-size-lg);
  color: var(--primary-200);
  margin-bottom: var(--spacing-8);
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
}

/* ============================================
   Dashboard Layout
   ============================================ */
.dashboard-layout {
  display: flex;
  padding-top: 72px;
  min-height: 100vh;
}

.dashboard-main {
  flex: 1;
  margin-left: 260px;
  padding: var(--spacing-8);
  background: var(--gray-50);
  min-height: calc(100vh - 72px);
  transition: margin-left var(--transition-normal);
}

body.sidebar-collapsed .sidebar {
  width: 92px;
  padding: var(--spacing-4) var(--spacing-3);
}

body.sidebar-collapsed .dashboard-main {
  margin-left: 92px;
}

body.sidebar-collapsed .sidebar-collapse-btn span,
body.sidebar-collapsed .sidebar-section-title-text,
body.sidebar-collapsed .sidebar-section-title-toggle i,
body.sidebar-collapsed .sidebar-link span,
body.sidebar-collapsed .sidebar-link-badge,
body.sidebar-collapsed .sidebar-help-card {
  display: none;
}

body.sidebar-collapsed .sidebar-section-title-toggle {
  margin-bottom: var(--spacing-2);
}

body.sidebar-collapsed .sidebar-link {
  justify-content: center;
  padding: var(--spacing-3);
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-8);
}

.dashboard-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
}

.dashboard-subtitle {
  color: var(--gray-500);
  margin-top: var(--spacing-1);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

/* Dashboard Cards */
.dashboard-card {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.dashboard-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-5) var(--spacing-6);
  border-bottom: 1px solid var(--gray-100);
}

.dashboard-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.dashboard-card-body {
  padding: var(--spacing-6);
}

/* ============================================
   Class Detail Page
   ============================================ */
.class-detail-hero {
  background: var(--gradient-dark);
  padding: calc(72px + var(--spacing-16)) 0 var(--spacing-16);
}

.class-detail-container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-8);
}

.class-detail-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-6);
}

.class-detail-breadcrumb a,
.class-detail-breadcrumb span {
  color: var(--primary-200);
  font-size: var(--font-size-sm);
}

.class-detail-breadcrumb i {
  font-size: var(--font-size-xs);
}

.class-detail-title {
  font-size: var(--font-size-3xl);
  color: white;
  margin-bottom: var(--spacing-4);
}

.class-detail-subtitle {
  font-size: var(--font-size-lg);
  color: var(--primary-200);
  margin-bottom: var(--spacing-6);
}

.class-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-6);
}

.class-detail-meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: white;
  font-size: var(--font-size-sm);
}

.class-detail-meta-item i {
  color: var(--sky-300);
}

/* Purchase Card */
.purchase-card {
  background: white;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  position: sticky;
  top: calc(72px + var(--spacing-6));
}

.purchase-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.purchase-card-body {
  padding: var(--spacing-6);
}

.purchase-card-price {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
}

.purchase-card-price-old {
  font-size: var(--font-size-lg);
  color: var(--gray-400);
  text-decoration: line-through;
  margin-right: var(--spacing-2);
}

.purchase-card-discount {
  background: var(--error-light);
  color: var(--error);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-left: var(--spacing-2);
}

.purchase-card-features {
  margin: var(--spacing-6) 0;
}

.purchase-card-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-2) 0;
  color: var(--gray-600);
  font-size: var(--font-size-sm);
}

.purchase-card-feature i {
  color: var(--primary-500);
}

/* Class Content */
.class-detail-content {
  padding: var(--spacing-16) 0;
}

.class-detail-main {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-8);
}

/* Curriculum */
.curriculum-section {
  margin-top: var(--spacing-8);
}

.curriculum-module {
  margin-bottom: var(--spacing-4);
}

.curriculum-module-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) var(--spacing-5);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.curriculum-module-header:hover {
  background: var(--gray-100);
}

.curriculum-module-title {
  font-weight: 600;
}

.curriculum-module-meta {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
}

.curriculum-lessons {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.curriculum-module.open .curriculum-lessons {
  max-height: 500px;
}

.curriculum-lesson {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-3) var(--spacing-5);
  padding-left: var(--spacing-10);
  border-bottom: 1px solid var(--gray-100);
}

.curriculum-lesson:last-child {
  border-bottom: none;
}

.curriculum-lesson-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  color: var(--gray-700);
  font-size: var(--font-size-sm);
}

.curriculum-lesson-title i {
  color: var(--gray-400);
}

.curriculum-lesson-duration {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
}

/* Reviews */
.reviews-section {
  margin-top: var(--spacing-12);
}

.reviews-summary {
  display: flex;
  gap: var(--spacing-8);
  padding: var(--spacing-6);
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-8);
}

.reviews-average {
  text-align: center;
  padding-right: var(--spacing-8);
  border-right: 1px solid var(--gray-200);
}

.reviews-average-value {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  color: var(--gray-900);
}

.reviews-breakdown {
  flex: 1;
}

.reviews-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-2);
}

.reviews-bar-label {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  width: 60px;
}

.reviews-bar-track {
  flex: 1;
  height: 8px;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.reviews-bar-fill {
  height: 100%;
  background: #fbbf24;
  border-radius: var(--radius-full);
}

.reviews-bar-count {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
  width: 40px;
  text-align: right;
}

.review-item {
  padding: var(--spacing-6) 0;
  border-bottom: 1px solid var(--gray-100);
}

.review-item:last-child {
  border-bottom: none;
}

.review-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-4);
}

.review-content {
  color: var(--gray-600);
  line-height: 1.7;
}

/* ============================================
   Auth Pages
   ============================================ */
.auth-page {
  min-height: 100vh;
  display: flex;
}

.auth-left {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-8);
}

.auth-right {
  flex: 1;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-8);
  position: relative;
  overflow: hidden;
}

.auth-right::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.auth-form-container {
  width: 100%;
  max-width: 420px;
}

.auth-form-header {
  text-align: center;
  margin-bottom: var(--spacing-8);
}

.auth-form-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-2);
}

.auth-form-subtitle {
  color: var(--gray-500);
}

.auth-social-buttons {
  display: flex;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-6);
}

.auth-social-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3);
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  color: var(--gray-700);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.auth-social-btn:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
}

.auth-promo {
  text-align: center;
  color: white;
  position: relative;
  z-index: 1;
  max-width: 400px;
}

.auth-promo-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
}

.auth-promo-text {
  color: var(--primary-200);
  line-height: 1.7;
}

/* ============================================
   Catalog / Browse Page
   ============================================ */
.catalog-page {
  padding-top: 72px;
  min-height: 100vh;
}

.catalog-header {
  background: var(--gradient-primary);
  padding: var(--spacing-16) 0;
}

.catalog-search-container {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.catalog-title {
  font-size: var(--font-size-3xl);
  color: white;
  margin-bottom: var(--spacing-6);
}

.catalog-search {
  position: relative;
}

.catalog-search input {
  width: 100%;
  padding: var(--spacing-5) var(--spacing-6);
  padding-left: var(--spacing-12);
  font-size: var(--font-size-lg);
  border: none;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

.catalog-search input:focus {
  outline: none;
  box-shadow: var(--shadow-2xl);
}

.catalog-search i {
  position: absolute;
  left: var(--spacing-5);
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  font-size: var(--font-size-lg);
}

.catalog-content {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--spacing-8);
  padding: var(--spacing-8) 0;
}

/* Filters Sidebar */
.catalog-filters {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  height: fit-content;
  box-shadow: var(--shadow-md);
}

.filter-section {
  padding-bottom: var(--spacing-5);
  margin-bottom: var(--spacing-5);
  border-bottom: 1px solid var(--gray-100);
}

.filter-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.filter-title {
  font-weight: 600;
  margin-bottom: var(--spacing-4);
}

.filter-options {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

/* Results */
.catalog-results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-6);
}

.catalog-results-count {
  color: var(--gray-600);
}

.catalog-sort {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.catalog-sort label {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
}

.catalog-sort select {
  padding: var(--spacing-2) var(--spacing-4);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  background: white;
  cursor: pointer;
}

/* ============================================
   Profile Page
   ============================================ */
.profile-header {
  background: var(--gradient-dark);
  padding: calc(72px + var(--spacing-12)) 0 var(--spacing-12);
}

.profile-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.profile-avatar {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  border: 4px solid white;
  overflow: hidden;
}

.profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-details h1 {
  font-size: var(--font-size-2xl);
  color: white;
  margin-bottom: var(--spacing-2);
}

.profile-details p {
  color: var(--primary-200);
  margin-bottom: var(--spacing-4);
}

.profile-stats {
  display: flex;
  gap: var(--spacing-8);
}

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

.profile-stat-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: white;
}

.profile-stat-label {
  font-size: var(--font-size-sm);
  color: var(--primary-200);
}

.profile-content {
  padding: var(--spacing-12) 0;
}

/* Page Padding */
.page-padding-top {
  padding-top: 72px;
}

/* ============================================
   Dashboard Sections
   ============================================ */
.dashboard-section {
  margin-bottom: var(--spacing-8);
}

.dashboard-section .section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  margin: 0 0 var(--spacing-5);
  max-width: none;
}

.dashboard-section .section-title {
  font-size: var(--font-size-xl);
  margin: 0;
}

.dashboard-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-8);
}

.stats-grid-5 {
  grid-template-columns: repeat(5, 1fr);
}

/* Continue Learning Grid */
.continue-learning-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
}

.continue-card {
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all var(--transition-normal);
}

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

.continue-card-image {
  position: relative;
  height: 140px;
}

.continue-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.continue-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.continue-card:hover .continue-card-overlay {
  opacity: 1;
}

.continue-card-body {
  padding: var(--spacing-5);
}

.continue-card-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-2);
}

.continue-card-lesson {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
  margin-bottom: var(--spacing-3);
}

.continue-card-progress {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.continue-card-progress .progress {
  flex: 1;
}

.continue-card-progress span {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--primary-600);
}

/* Activity List */
.activity-list {
  display: flex;
  flex-direction: column;
}

.activity-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
  padding: var(--spacing-4) var(--spacing-5);
  border-bottom: 1px solid var(--gray-100);
  transition: background var(--transition-fast);
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-item:hover {
  background: var(--gray-50);
}

.activity-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-50);
  border-radius: var(--radius-lg);
  color: var(--primary-500);
}

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

.activity-text {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--gray-700);
}

.activity-time {
  font-size: var(--font-size-xs);
  color: var(--gray-400);
}

/* ============================================
   My Learning Page
   ============================================ */
.my-learning-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-8);
}

.my-learning-stats .stat-item {
  background: white;
  padding: var(--spacing-6);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.my-learning-stats .stat-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.my-learning-stats .stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-600);
}

.my-learning-stats .stat-label {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
  margin-top: var(--spacing-1);
}

.my-learning-filters {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-8);
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.my-learning-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
}

.my-learning-card {
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.my-learning-card:hover {
  box-shadow: var(--shadow-xl);
}

.my-learning-card-image {
  position: relative;
  height: 160px;
}

.my-learning-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.completion-badge {
  position: absolute;
  top: var(--spacing-3);
  right: var(--spacing-3);
  width: 40px;
  height: 40px;
  background: var(--success);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-lg);
}

.my-learning-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.my-learning-card:hover .my-learning-card-overlay {
  opacity: 1;
}

.my-learning-card-body {
  padding: var(--spacing-5);
}

.my-learning-card-meta {
  display: flex;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-3);
}

.my-learning-card-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-3);
  cursor: pointer;
}

.my-learning-card-title:hover {
  color: var(--primary-500);
}

.my-learning-card-tutor {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--gray-500);
  margin-bottom: var(--spacing-4);
}

.my-learning-progress {
  margin-bottom: var(--spacing-4);
}

.my-learning-progress .progress-info {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-2);
  font-size: var(--font-size-xs);
  color: var(--gray-500);
}

.my-learning-card-actions {
  margin-top: var(--spacing-4);
}

.my-learning-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-3) var(--spacing-5);
  border-top: 1px solid var(--gray-100);
  background: var(--gray-50);
}

.last-accessed {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

/* ============================================
   Profile Page Enhanced
   ============================================ */
.profile-header-card {
  background: white;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-8);
}

.profile-cover {
  height: 180px;
  background: var(--gradient-primary);
  position: relative;
}

.profile-header-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 0 var(--spacing-8) var(--spacing-6);
  margin-top: -60px;
}

.profile-avatar-section {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-6);
}

.profile-avatar {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  border: 4px solid white;
  overflow: hidden;
  background: var(--primary-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-600);
  position: relative;
  box-shadow: var(--shadow-lg);
}

.profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-avatar-edit {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 36px;
  height: 36px;
  background: var(--primary-500);
  border: 3px solid white;
  border-radius: var(--radius-full);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.profile-avatar-edit:hover {
  background: var(--primary-600);
}

.profile-info {
  padding-bottom: var(--spacing-2);
}

.profile-name {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-1);
}

.profile-email {
  color: var(--gray-500);
  margin-bottom: var(--spacing-2);
}

.profile-actions {
  display: flex;
  gap: var(--spacing-3);
}

/* ============================================
   Create Class Page
   ============================================ */
.create-class-page {
  min-height: 100vh;
  background: var(--gray-50);
  padding: var(--spacing-8) 0;
}

.create-class-steps {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--spacing-10);
}

.create-class-step {
  display: flex;
  align-items: center;
  position: relative;
}

.create-class-step .step-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-200);
  color: var(--gray-500);
  border-radius: var(--radius-full);
  font-weight: 700;
  transition: all var(--transition-fast);
  z-index: 1;
}

.create-class-step.active .step-number {
  background: var(--primary-500);
  color: white;
}

.create-class-step.completed .step-number {
  background: var(--success);
  color: white;
}

.create-class-step .step-info {
  margin-left: var(--spacing-3);
  margin-right: var(--spacing-6);
}

.create-class-step .step-title {
  font-weight: 600;
  color: var(--gray-400);
}

.create-class-step.active .step-title {
  color: var(--primary-600);
}

.create-class-step.completed .step-title {
  color: var(--gray-700);
}

.create-class-step .step-line {
  width: 60px;
  height: 2px;
  background: var(--gray-200);
  margin-right: var(--spacing-6);
}

.create-class-step.completed .step-line {
  background: var(--success);
}

.create-class-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-8);
}

.step-content h2 {
  font-size: var(--font-size-xl);
}

/* Upload Area */
.upload-area {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-xl);
  padding: var(--spacing-10);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.upload-area:hover {
  border-color: var(--primary-400);
  background: var(--primary-50);
}

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Curriculum Form */
.curriculum-module-form {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  margin-bottom: var(--spacing-4);
  border: 1px solid var(--gray-200);
}

/* ============================================
   Loading Screen
   ============================================ */
.loading-screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: white;
  z-index: 9999;
}

.loading-spinner .spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--gray-200);
  border-top-color: var(--primary-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ============================================
   Rating Input
   ============================================ */
.rating-input {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.rating-input i {
  cursor: pointer;
  transition: all var(--transition-fast);
}

.rating-input i:hover {
  transform: scale(1.2);
}

/* ============================================
   Input Group Addon
   ============================================ */
.input-group {
  display: flex;
  align-items: center;
}

.input-group-addon {
  padding: var(--spacing-3) var(--spacing-4);
  background: var(--gray-100);
  border: 2px solid var(--gray-200);
  border-right: none;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  color: var(--gray-500);
}

.input-group .form-input {
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.input-group .form-input:first-child {
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.input-group .btn:last-child {
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

/* ============================================
   Category Label
   ============================================ */
.category-label {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
}

/* ============================================
   Tutor Card Enhanced
   ============================================ */
.become-tutor-section {
  padding: var(--spacing-24) 0;
  background: var(--gradient-light);
}

.become-tutor-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.become-tutor-image {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
}

.become-tutor-image img {
  width: 100%;
  height: auto;
}

.become-tutor-benefits {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  margin: var(--spacing-6) 0;
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.benefit-item i {
  color: var(--success);
  font-size: var(--font-size-lg);
}