/* ==================== MODERN DESIGN - Inspiré de TaalimAI ==================== */

/* Variables */
:root {
  --primary-color: #4F46E5;
  --primary-hover: #4338CA;
  --secondary-color: #06B6D4;
  --dark-bg: #0F172A;
  --dark-bg-transparent: rgba(15, 23, 42, 0.95);
  --text-light: #F8FAFC;
  --text-dark: #1E293B;
  --border-light: #E2E8F0;
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: #F8FAFC;
}

/* ==================== MODERN NAVBAR ==================== */
.modern-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--dark-bg-transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.modern-navbar.scrolled {
  background: var(--dark-bg);
  box-shadow: var(--shadow-md);
}

.navbar-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-light);
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.3s ease;
}

.navbar-logo:hover {
  transform: scale(1.05);
}

.navbar-logo i {
  font-size: 2rem;
  color: var(--secondary-color);
}

/* Hamburger Menu Button */
.hamburger-btn {
  background: transparent;
  border: 2px solid var(--text-light);
  color: var(--text-light);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.hamburger-btn:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  transform: rotate(90deg);
}

.hamburger-btn i {
  font-size: 1.25rem;
  transition: transform 0.3s ease;
}

/* Dropdown Menu */
.dropdown-menu {
  position: fixed;
  top: 80px;
  right: 2rem;
  background: white;
  border-radius: 1rem;
  box-shadow: var(--shadow-xl);
  min-width: 280px;
  max-height: 80vh;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px) scale(0.95);
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  z-index: 999;
}

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

.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -8px;
  right: 20px;
  width: 16px;
  height: 16px;
  background: white;
  transform: rotate(45deg);
}

.menu-section {
  padding: 0.5rem;
}

.menu-section-title {
  padding: 0.75rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: #94A3B8;
  letter-spacing: 0.05em;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  color: var(--text-dark);
  background: transparent;
  border: none;
  border-radius: 0.5rem;
  width: 100%;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9375rem;
  font-weight: 500;
}

.menu-item:hover {
  background: #F1F5F9;
  color: var(--primary-color);
  transform: translateX(4px);
}

.menu-item i {
  font-size: 1.125rem;
  width: 20px;
  text-align: center;
}

.menu-divider {
  height: 1px;
  background: var(--border-light);
  margin: 0.5rem 0;
}

.menu-user-section {
  padding: 1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 0.75rem;
  margin: 0.5rem;
  color: white;
}

.menu-user-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.menu-user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.menu-user-name {
  font-weight: 600;
  font-size: 1rem;
}

.menu-logout-btn {
  width: 100%;
  padding: 0.625rem;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 0.5rem;
  color: white;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.menu-logout-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* ==================== HERO SECTION ==================== */
.hero-section {
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,101.3C1248,85,1344,75,1392,69.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3), transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(138, 43, 226, 0.3), transparent 50%);
  pointer-events: none;
}

.hero-content {
  max-width: 900px;
  text-align: center;
  color: white;
  padding: 2rem;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-title .highlight {
  color: var(--secondary-color);
  display: inline-block;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  line-height: 1.8;
  margin-bottom: 2.5rem;
  opacity: 0.95;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2.5rem;
  background: white;
  color: var(--primary-color);
  border-radius: 50px;
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.hero-cta:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 10px); }
}

.scroll-indicator i {
  font-size: 2rem;
  color: white;
  opacity: 0.8;
}

/* ==================== DOMAINS SECTION ==================== */
.domains-section {
  padding: 5rem 2rem;
  background: #F8FAFC;
}

.section-header {
  max-width: 800px;
  margin: 0 auto 4rem;
  text-align: center;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.section-description {
  font-size: 1.125rem;
  color: #64748B;
  line-height: 1.8;
}

.domains-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

/* Modern Domain Card */
.domain-card {
  background: white;
  border-radius: 1.5rem;
  padding: 2.5rem;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  cursor: pointer;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.domain-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.domain-card:hover::before {
  transform: scaleX(1);
}

.domain-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.domain-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2.5rem;
  transition: all 0.3s ease;
}

.domain-card:hover .domain-icon {
  transform: scale(1.1) rotate(5deg);
}

.domain-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.domain-description {
  font-size: 0.9375rem;
  color: #64748B;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.domain-meta {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: #94A3B8;
}

/* ==================== ENROLLMENTS PAGE ==================== */
.enrollments-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  min-height: 100vh;
  padding-top: 100px;
}

.page-header {
  margin-bottom: 3rem;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.page-subtitle {
  font-size: 1.125rem;
  color: #64748B;
}

.status-tabs {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 0.5rem;
  background: white;
  border-radius: 1rem;
  box-shadow: var(--shadow-sm);
}

.status-tab {
  flex: 1;
  padding: 0.875rem 1.5rem;
  background: transparent;
  border: none;
  border-radius: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  color: #64748B;
}

.status-tab.active {
  background: var(--primary-color);
  color: white;
  transform: scale(1.05);
}

.status-tab:hover:not(.active) {
  background: #F1F5F9;
}

/* Modern Enrollment Card */
.enrollment-card {
  background: white;
  border-radius: 1.25rem;
  padding: 2rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  border: 1px solid var(--border-light);
}

.enrollment-card:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
}

.enrollment-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 1.5rem;
}

.enrollment-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.enrollment-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.875rem;
  color: #64748B;
}

.enrollment-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
}

.enrollment-status.approved {
  background: #DCFCE7;
  color: #166534;
}

.enrollment-status.pending {
  background: #FEF3C7;
  color: #92400E;
}

.enrollment-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: #F1F5F9;
  color: var(--text-dark);
}

.btn-secondary:hover {
  background: #E2E8F0;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  .navbar-container {
    padding: 1rem;
  }

  .hero-content {
    padding: 1rem;
  }

  .domains-section {
    padding: 3rem 1rem;
  }

  .domains-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .enrollments-container {
    padding: 1rem;
    padding-top: 100px;
  }

  .status-tabs {
    flex-direction: column;
  }

  .enrollment-header {
    flex-direction: column;
    gap: 1rem;
  }

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

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ==================== UTILITY CLASSES ==================== */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-slide-left {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slide-right {
  animation: slideInRight 0.6s ease-out;
}

/* Loading Spinner */
.loading-spinner {
  display: inline-block;
  width: 50px;
  height: 50px;
  border: 5px solid #f3f3f3;
  border-top: 5px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
}

.empty-state-icon {
  font-size: 4rem;
  color: #CBD5E1;
  margin-bottom: 1.5rem;
}

.empty-state-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.empty-state-description {
  font-size: 1rem;
  color: #64748B;
}

/* Filter Buttons */
.btn-filter {
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #64748B;
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-filter:hover {
  background-color: #F1F5F9;
  border-color: #CBD5E1;
  color: var(--text-dark);
}

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

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

/* Line Clamp */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}