/* ============================================
   Dr. Salah Alzait - Components Stylesheet
   ============================================ */

/* ==================== NAVIGATION ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--space-md) 0;
  transition: var(--transition-base);
}

.navbar.scrolled {
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  padding: var(--space-sm) 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.navbar-brand img {
  height: 50px;
  width: auto;
  transition: var(--transition-base);
}

.navbar.scrolled .navbar-brand img {
  height: 40px;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.navbar-menu li {
  position: relative;
}

.navbar-menu a {
  color: var(--text-primary);
  font-weight: 500;
  padding: var(--space-sm) 0;
  position: relative;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gold);
  transition: var(--transition-base);
}

.navbar-menu a:hover::after,
.navbar-menu a.active::after {
  width: 100%;
}

.navbar-menu .dropdown {
  position: relative;
}

.navbar-menu .dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: var(--space-sm) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition-base);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--glass-border);
}

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

.dropdown-menu a {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-secondary);
}

.dropdown-menu a:hover {
  background: var(--glass-bg);
  color: var(--accent-gold);
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
}

.navbar-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-base);
}

.navbar-cta {
  display: flex;
  gap: var(--space-md);
}

@media (max-width: 1024px) {
  .navbar-toggle {
    display: flex;
  }
  
  .navbar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3xl) var(--space-xl);
    transition: var(--transition-base);
  }
  
  .navbar-menu.active {
    right: 0;
  }
  
  .navbar-menu li {
    width: 100%;
  }
  
  .navbar-menu a {
    display: block;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--glass-border);
  }
  
  .navbar-cta {
    display: none;
  }
}

/* ==================== HERO SECTION ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(10, 22, 40, 0.85) 0%, rgba(13, 52, 70, 0.8) 100%);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 1;
}

.hero-bg video,
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  z-index: 3;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-xl);
  backdrop-filter: blur(10px);
}

.hero-badge span {
  font-size: var(--text-sm);
  color: var(--accent-gold);
  font-weight: 500;
}

.hero h1 {
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s ease;
}

.hero h2 {
  font-size: var(--text-2xl);
  color: var(--accent-gold);
  margin-bottom: var(--space-md);
  animation: fadeInUp 0.8s ease 0.1s backwards;
}

.hero p {
  font-size: var(--text-lg);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.3s backwards;
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  animation: bounce 2s infinite;
}

.hero-scroll i {
  font-size: var(--text-2xl);
}

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

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

/* ==================== FEATURES ==================== */
.features {
  background: var(--bg-secondary);
  position: relative;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  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='%231a5f7a' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  position: relative;
  z-index: 1;
}

.feature-card {
  text-align: center;
  padding: var(--space-2xl);
}

.feature-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  background: var(--primary-gradient);
  border-radius: var(--radius-lg);
  font-size: var(--text-2xl);
  color: var(--text-primary);
  transition: var(--transition-base);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-glow);
}

.feature-card h3 {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.feature-card p {
  color: var(--text-secondary);
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ==================== COURSES ==================== */
.courses {
  position: relative;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--space-xl);
}

.course-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-card);
  transition: var(--transition-base);
}

.course-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

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

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

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

.course-badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: var(--space-xs) var(--space-md);
  background: var(--accent-gold);
  color: var(--bg-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.course-badge.online {
  background: var(--accent-emerald);
  color: var(--text-primary);
}

.course-content {
  padding: var(--space-xl);
}

.course-meta {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-md);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.course-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.course-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.course-description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-md);
  border-top: 1px solid var(--glass-border);
}

.course-price {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--accent-gold);
}

/* ==================== ABOUT ==================== */
.about {
  position: relative;
  overflow: hidden;
}

.about-wave {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  fill: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  border-radius: var(--radius-xl);
  position: relative;
  z-index: 1;
}

.about-image::before {
  content: '';
  position: absolute;
  top: var(--space-xl);
  left: var(--space-xl);
  width: 100%;
  height: 100%;
  background: var(--primary-gradient);
  border-radius: var(--radius-xl);
  z-index: 0;
}

.about-content h2 {
  margin-bottom: var(--space-lg);
}

.about-content p {
  margin-bottom: var(--space-xl);
  font-size: var(--text-lg);
}

@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .about-image {
    order: -1;
    max-width: 400px;
    margin: 0 auto;
  }
}

/* ==================== STATS ==================== */
.stats {
  background: var(--primary-gradient);
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  padding: var(--space-xl);
}

.stat-number {
  font-size: var(--text-5xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.8);
  text-transform: uppercase;
  letter-spacing: 2px;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* ==================== TESTIMONIALS ==================== */
.testimonials {
  background: var(--bg-secondary);
}

.testimonials-slider {
  position: relative;
  overflow: hidden;
}

.testimonials-track {
  display: flex;
  gap: var(--space-xl);
  transition: transform 0.5s ease;
}

.testimonial-card {
  flex: 0 0 calc(50% - var(--space-xl) / 2);
  padding: var(--space-2xl);
}

.testimonial-quote {
  font-size: var(--text-4xl);
  color: var(--accent-gold);
  margin-bottom: var(--space-lg);
}

.testimonial-text {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  font-style: italic;
  line-height: 1.8;
}

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

.testimonial-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.testimonial-info h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.testimonial-rating {
  color: var(--accent-gold);
}

.testimonials-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.testimonials-nav button {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-base);
}

.testimonials-nav button:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

@media (max-width: 768px) {
  .testimonial-card {
    flex: 0 0 100%;
  }
}

/* ==================== FOOTER ==================== */
.footer {
  background: var(--bg-secondary);
  padding-top: var(--space-3xl);
  border-top: 1px solid var(--glass-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-3xl);
}

.footer-brand img {
  height: 60px;
  margin-bottom: var(--space-lg);
}

.footer-brand p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  transition: var(--transition-base);
}

.footer-social a:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  transform: translateY(-3px);
}

.footer-column h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  font-size: var(--text-lg);
}

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

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--text-secondary);
  transition: var(--transition-base);
}

.footer-links a:hover {
  color: var(--accent-gold);
  padding-left: var(--space-sm);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

.footer-contact i {
  color: var(--primary-light);
  margin-top: 4px;
}

.footer-bottom {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-bottom p {
  color: var(--text-muted);
  margin: 0;
  font-size: var(--text-sm);
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-social {
    justify-content: center;
  }
  
  .footer-contact li {
    justify-content: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ==================== SCROLL TO TOP ==================== */
.scroll-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-base);
  z-index: 999;
  border: none;
  box-shadow: var(--shadow-glow);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

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

/* ==================== LOADING ANIMATION ==================== */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-spinner {
  width: 60px;
  height: 60px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--accent-gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ==================== CONTACT FORM ==================== */
#contactForm input,
#contactForm textarea {
  font-family: inherit;
}

#contactForm input:focus,
#contactForm textarea:focus {
  outline: none;
  border-color: var(--accent-gold);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

#contactForm input::placeholder,
#contactForm textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

#contactForm button[type="submit"] {
  transition: all 0.3s ease;
}

#contactForm button[type="submit"]:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 175, 55, 0.3);
}

#contactForm button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

#formMessage {
  animation: fadeIn 0.3s ease;
}

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