/* ===== GLOBAL STYLES ===== */
:root {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;
  --success-color: #4facfe;
  --warning-color: #f093fb;
  --danger-color: #ff6b6b;
  --dark-color: #2c3e50;
  --light-color: #f8f9fa;
  --text-dark: #2c3e50;
  --text-light: #6c757d;
  --border-radius: 10px;
  --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  overflow-x: hidden;
  padding-top: 76px; /* Account for fixed navbar */
}

/* ===== NAVBAR STYLES ===== */
.navbar {
  transition: var(--transition);
  backdrop-filter: blur(10px);
  background: rgba(33, 37, 41, 0.95) !important;
}

.navbar-scrolled {
  background: rgba(33, 37, 41, 0.98) !important;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
  font-family: 'Ubuntu', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: white !important;
}

.navbar-brand:hover {
  color: var(--primary-color) !important;
}

.navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.8) !important;
  font-weight: 500;
  transition: var(--transition);
  padding: 0.5rem 1rem !important;
  border-radius: 6px;
  margin: 0 0.25rem;
}

.navbar-nav .nav-link:hover {
  color: white !important;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.navbar-nav .nav-link.active {
  color: white !important;
  background: var(--primary-color);
}

.dropdown-menu {
  background: rgba(33, 37, 41, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.dropdown-item {
  color: rgba(255, 255, 255, 0.8) !important;
  transition: var(--transition);
}

.dropdown-item:hover {
  color: white !important;
  background: rgba(255, 255, 255, 0.1);
}

.navbar-toggler {
  border: none;
  padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* ===== HERO SECTION ===== */
.hero-section {
  position: relative;
  height: 100vh;
  overflow: hidden;
  margin-top: -76px; /* Compensate for body padding */
  padding-top: 76px; /* Add padding back to hero */
}

.video-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.video-background video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  align-items: center;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: white;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.gradient-text {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  margin-top: 2rem;
}

.btn {
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
  color: white;
}

.btn-outline-light {
  background: transparent;
  color: white;
  border: 2px solid white;
}

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

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
}

.scroll-arrow {
  width: 30px;
  height: 30px;
  border: 2px solid white;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0) rotate(45deg);
  }
  40% {
    transform: translateY(-10px) rotate(45deg);
  }
  60% {
    transform: translateY(-5px) rotate(45deg);
  }
}

/* ===== STATISTICS SECTION ===== */
.statistics-section {
  background: white;
  padding: 80px 0;
}

.stat-card {
  padding: 2rem;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  border: 1px solid #e9ecef;
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.stat-icon {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

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

.stat-label {
  font-size: 1rem;
  color: var(--text-light);
  font-weight: 500;
}

/* ===== FEATURES SECTION ===== */
.features-section {
  background: var(--light-color);
  padding: 80px 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

.feature-card {
  background: white;
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  text-align: center;
  transition: var(--transition);
  height: 100%;
  border: 1px solid #e9ecef;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.feature-icon {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.feature-card h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dark-color);
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* ===== COURSES PREVIEW ===== */
.courses-preview {
  padding: 80px 0;
  background: white;
}

.course-card {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  height: 100%;
  border: 1px solid #e9ecef;
}

.course-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.course-image {
  position: relative;
  overflow: hidden;
  height: 200px;
}

.course-image img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 12px 12px 0 0;
  display: block;
}
@media (max-width: 767.98px) {
  .course-image img {
    height: 160px;
  }
}

.course-card:hover .course-image img {
  transform: scale(1.1);
}

.course-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(102, 126, 234, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

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

.course-content {
  padding: 1.5rem;
}

.course-content h5 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--dark-color);
  margin-bottom: 0.5rem;
}

.course-content p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.course-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.price {
  font-size: 0.9rem;
}

.price del {
  color: var(--text-light);
  margin-right: 0.5rem;
}

.price strong {
  color: var(--primary-color);
  font-size: 1.1rem;
}

.duration {
  color: var(--text-light);
  font-size: 0.8rem;
}

/* ===== TESTIMONIALS SECTION ===== */
.testimonials-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 80px 0;
}

.testimonial-card {
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  height: 100%;
  transition: var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.stars {
  color: #ffc107;
  margin-bottom: 1rem;
}

.testimonial-content p {
  font-style: italic;
  color: var(--text-dark);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.testimonial-author {
  display: flex;
  align-items: center;
}

.author-image {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: 1rem;
}

.author-info h6 {
  font-weight: 600;
  color: var(--dark-color);
  margin-bottom: 0.25rem;
}

.author-info span {
  color: var(--text-light);
  font-size: 0.9rem;
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: var(--light-color);
  padding: 80px 0;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 1rem;
}

.cta-subtitle {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

/* ===== FOOTER SECTION ===== */
.footer-section {
  background: var(--dark-color);
  color: white;
  padding: 60px 0 30px;
}

.footer-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: white;
}

.footer-text {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border-radius: 50%;
  transition: var(--transition);
  text-decoration: none;
}

.social-link:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
  padding-left: 5px;
}

.contact-info p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
}

.contact-info i {
  color: var(--primary-color);
  margin-right: 0.5rem;
}

.footer-divider {
  border-color: rgba(255, 255, 255, 0.1);
  margin: 2rem 0;
}

.copyright-text {
  color: rgba(255, 255, 255, 0.6);
}

.payment-methods {
  color: rgba(255, 255, 255, 0.6);
}

.payment-methods i {
  font-size: 1.5rem;
  margin-left: 0.5rem;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  body {
    padding-top: 70px;
  }
  
  .hero-section {
    margin-top: -70px;
    padding-top: 70px;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .cta-title {
    font-size: 2rem;
  }
  
  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
  
  .hero-buttons .btn {
    display: block;
    margin: 0.5rem auto;
    max-width: 200px;
  }
  
  .stat-card {
    margin-bottom: 1rem;
  }
  
  .feature-card {
    margin-bottom: 1rem;
  }
  
  .course-card {
    margin-bottom: 1rem;
  }
  
  .testimonial-card {
    margin-bottom: 1rem;
  }
  
  .navbar-brand {
    font-size: 1.5rem;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 0.9rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .cta-title {
    font-size: 1.75rem;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .feature-icon {
    font-size: 2.5rem;
  }
}

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

.animate__fadeInUp {
  animation: fadeInUp 0.6s ease-out;
}

.animate__delay-1s {
  animation-delay: 0.2s;
}

.animate__delay-2s {
  animation-delay: 0.4s;
}

/* ===== UTILITY CLASSES ===== */
.bg-gradient-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.text-gradient {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.shadow-lg {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.rounded-lg {
  border-radius: var(--border-radius);
}

/* ===== SCROLL BEHAVIOR ===== */
html {
  scroll-behavior: smooth;
}

/* ===== LOADING ANIMATION ===== */
.loading {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.loading.loaded {
  opacity: 1;
  transform: translateY(0);
}

/* ===== COUNTER ANIMATION ===== */
.stat-number {
  transition: all 0.3s ease;
}

/* ===== HOVER EFFECTS ===== */
.hover-lift {
  transition: var(--transition);
}

.hover-lift:hover {
  transform: translateY(-5px);
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

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

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-color);
}

/* Registration Modal Styles */
.registration-container {
  padding: 20px 0;
}

.registration-header {
  margin-bottom: 30px;
}

.registration-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.registration-icon i {
  font-size: 32px;
  color: white;
}

.registration-title {
  font-size: 24px;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 10px;
}

.registration-subtitle {
  color: #7f8c8d;
  font-size: 14px;
  margin: 0;
}

.form-floating {
  position: relative;
}

.form-floating .form-control {
  height: 60px;
  padding: 1rem 0.75rem;
  border: 2px solid #e9ecef;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.form-floating .form-control:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.form-floating label {
  padding: 1rem 0.75rem;
  color: #6c757d;
  font-weight: 500;
}

.form-floating .form-control:focus + label,
.form-floating .form-control:not(:placeholder-shown) + label {
  color: #667eea;
  transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

.registration-benefits {
  background: #f8f9fa;
  border-radius: 12px;
  padding: 20px;
  border-left: 4px solid #28a745;
}

.benefit-item {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  font-size: 14px;
  color: #495057;
}

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

.benefit-item i {
  margin-right: 10px;
  font-size: 16px;
}

/* Login Modal Styles */
.login-container {
  padding: 20px 0;
}

.login-header {
  margin-bottom: 30px;
}

.login-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.login-icon i {
  font-size: 28px;
  color: white;
}

.login-title {
  font-size: 22px;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 8px;
}

.login-subtitle {
  color: #7f8c8d;
  font-size: 14px;
  margin: 0;
}

/* Role Selection Styles */
.role-selection {
  display: flex;
  gap: 15px;
  margin-bottom: 25px;
}

.role-option {
  flex: 1;
  text-align: center;
  padding: 15px;
  border: 2px solid #e9ecef;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  background: white;
}

.role-option:hover {
  border-color: #667eea;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.role-option.active {
  border-color: #667eea;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.role-option i {
  font-size: 24px;
  margin-bottom: 8px;
  display: block;
}

.role-option .role-name {
  font-weight: 600;
  font-size: 14px;
}

.role-option .role-desc {
  font-size: 12px;
  opacity: 0.8;
  margin-top: 5px;
}

/* Modal Improvements */
.modal-content {
  border: none;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.modal-header {
  border-bottom: none;
  padding: 25px 30px 0;
}

.modal-body {
  padding: 0 30px 30px;
}

.modal-footer {
  border-top: none;
  padding: 0 30px 25px;
}

.modal-title {
  font-weight: 700;
  color: #2c3e50;
}

.btn-close {
  background: none;
  border: none;
  font-size: 24px;
  color: #6c757d;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.btn-close:hover {
  opacity: 1;
}

/* Form Validation Styles */
.form-text {
  font-size: 12px;
  margin-top: 5px;
}

.form-text.text-danger {
  color: #dc3545 !important;
}

.form-text.text-success {
  color: #28a745 !important;
}

/* Button Styles */
.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 12px;
  padding: 12px 30px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.btn-outline-primary {
  border: 2px solid #667eea;
  color: #667eea;
  border-radius: 12px;
  padding: 12px 30px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-outline-primary:hover {
  background: #667eea;
  border-color: #667eea;
  transform: translateY(-2px);
}

/* Alert Styles */
.alert {
  border: none;
  border-radius: 12px;
  padding: 15px 20px;
  margin-bottom: 20px;
}

.alert-success {
  background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
  color: #155724;
  border-left: 4px solid #28a745;
}

.alert-danger {
  background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
  color: #721c24;
  border-left: 4px solid #dc3545;
}

/* Responsive Design */
@media (max-width: 768px) {
  .role-selection {
    flex-direction: column;
  }
  
  .modal-body {
    padding: 0 20px 20px;
  }
  
  .modal-header {
    padding: 20px 20px 0;
  }
  
  .modal-footer {
    padding: 0 20px 20px;
  }
}

/* Modern fixed-top login alert */
#loginAlert {
  z-index: 2000;
  min-width: 350px;
  max-width: 90vw;
  border-radius: 0.75rem;
  font-size: 1rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
  animation: slideDown 0.5s;
}
@keyframes slideDown {
  from { transform: translate(-50%, -100%); opacity: 0; }
  to   { transform: translate(-50%, 0); opacity: 1; }
}