/* Base CSS Variables and Styles */
:root {
  --bg: #ffffff;
  --surface: #f5f7fa;
  --text: #1a1a1a;
  --text-muted: #666666;
  --border: #e5e7eb;
  --blue: #0066CC;
  --blue-bg: rgba(0, 102, 204, 0.1);
  --nav-bg: rgba(255, 255, 255, 0.95);
  --nav-text: #1a1a1a;
  --nav-hover-bg: rgba(0, 102, 204, 0.05);
  --radius: 12px;
}

body.dark {
  --bg: #0a0a0a;
  --surface: #1a1a1a;
  --text: #ffffff;
  --text-muted: #a0a0a0;
  --border: #2a2a2a;
  --nav-bg: rgba(26, 26, 26, 0.95);
  --nav-text: #ffffff;
  --nav-hover-bg: rgba(255, 255, 255, 0.05);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s;
}

.header.scrolled {
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.logo {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  gap: 2px;
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}

.logo-sub {
  font-size: 10px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
  align-items: center;
}

.nav-link {
  padding: 8px 16px;
  color: var(--nav-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  border-radius: 8px;
  transition: all 0.2s;
}

.nav-link:hover {
  background: var(--nav-hover-bg);
  color: var(--blue);
}

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

.nav-link.nav-cta {
  background: var(--blue);
  color: white;
}

.nav-link.nav-cta:hover {
  background: #0052a3;
  color: white;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  color: var(--text);
  border-radius: 8px;
  transition: background 0.2s;
}

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

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.icon-sun { display: block; }
.icon-moon { display: none; }
body.dark .icon-sun { display: none; }
body.dark .icon-moon { display: block; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* Footer */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
  margin-top: 80px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--blue);
}

.footer-legal {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-legal a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
}

.footer-copy {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

/* Training-specific overrides and additions */

/* Hero Training */
.hero-training {
  background: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
  padding: 120px 0 80px;
  color: white;
  position: relative;
  overflow: hidden;
}

.hero-training::before {
  content: '';
  position: absolute;
  top: 0;
  right: -100px;
  width: 500px;
  height: 500px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-text p {
  font-size: 1.25rem;
  line-height: 1.6;
  opacity: 0.95;
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  gap: 16px;
}

.btn {
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  display: inline-block;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: white;
  color: #0066CC;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

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

.btn-secondary:hover {
  background: white;
  color: #0066CC;
}

/* Hero Stats */
.hero-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.stat-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 32px;
  border-radius: 16px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  opacity: 0.9;
}

/* Sections */
.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 16px;
  color: var(--text);
}

.section-subtitle {
  font-size: 1.1rem;
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 64px;
}

/* Formations Grid */
.formations {
  padding: 80px 0;
  background: var(--bg);
}

.formations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.formation-card {
  background: var(--surface);
  padding: 40px 32px;
  border-radius: 16px;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.formation-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
  border-color: var(--blue);
}

.formation-icon {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.formation-icon svg {
  width: 32px;
  height: 32px;
  color: white;
}

.formation-icon.azure {
  background: linear-gradient(135deg, #0078D4 0%, #0066CC 100%);
}

.formation-icon.data {
  background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
}

.formation-icon.devops {
  background: linear-gradient(135deg, #68217A 0%, #9B51E0 100%);
}

.formation-icon.security {
  background: linear-gradient(135deg, #107C10 0%, #0B6A0B 100%);
}

.formation-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.formation-card > p {
  color: var(--blue);
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 16px;
}

.formation-card ul {
  list-style: none;
  padding: 0;
  margin: 16px 0 24px;
}

.formation-card li {
  padding: 8px 0;
  color: var(--text-muted);
  font-size: 15px;
  position: relative;
  padding-left: 24px;
}

.formation-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--blue);
  font-weight: 700;
}

.formation-link {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
  font-size: 14px;
}

.formation-link:hover {
  text-decoration: underline;
}

/* Catalogue */
.catalogue {
  padding: 80px 0;
  background: var(--surface);
}

.catalogue-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
}

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

.catalogue-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.catalogue-item {
  background: var(--bg);
  padding: 32px 24px;
  border-radius: 16px;
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all 0.3s;
}

.catalogue-item:hover {
  transform: translateY(-4px);
  border-color: var(--blue);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.catalogue-icon {
  width: 56px;
  height: 56px;
  background: var(--blue);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 13px;
  margin-bottom: 8px;
}

.catalogue-info h4 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
  line-height: 1.3;
}

.catalogue-info p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.catalogue-duration {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
  padding: 8px 12px;
  background: var(--surface);
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 16px;
}

.catalogue-cta {
  padding: 12px 24px;
  background: var(--blue);
  color: white;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  text-align: center;
  transition: all 0.2s;
  margin-top: auto;
}

.catalogue-cta:hover {
  background: #0052a3;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

/* Certifications */
.certifications {
  padding: 80px 0;
  background: var(--bg);
}

.certif-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.certif-card {
  background: var(--surface);
  padding: 40px 32px;
  border-radius: 16px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all 0.3s;
}

.certif-card.featured {
  border-color: var(--blue);
  box-shadow: 0 8px 32px rgba(0, 102, 204, 0.15);
  transform: scale(1.05);
}

.certif-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}

.certif-badge {
  margin-bottom: 24px;
}

.badge-level {
  display: inline-block;
  padding: 8px 20px;
  background: var(--blue);
  color: white;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-level.expert {
  background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
}

.certif-card h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text);
}

.certif-code {
  color: var(--blue);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 24px;
}

.certif-card ul {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  text-align: left;
}

.certif-card li {
  padding: 10px 0;
  color: var(--text-muted);
  font-size: 15px;
  border-bottom: 1px solid var(--border);
}

.certif-card li:last-child {
  border-bottom: none;
}

.certif-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  margin: 24px 0;
}

/* Contact Section */
.contact-section {
  padding: 80px 0;
  background: var(--surface);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.contact-info h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text);
}

.contact-info p {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  color: var(--text);
}

.contact-item svg {
  width: 24px;
  height: 24px;
  color: var(--blue);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  font-family: 'Inter', sans-serif;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--blue);
}

.contact-form textarea {
  resize: vertical;
}

/* Responsive */
@media (max-width: 968px) {
  .hero-content {
    grid-template-columns: 1fr;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
    text-align: center;
  }

  .formations-grid {
    grid-template-columns: 1fr;
  }

  .catalogue-item {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .certif-card.featured {
    transform: none;
  }

  .contact-content {
    grid-template-columns: 1fr;
  }
}

/* Responsive Mobile */
@media (max-width: 968px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    display: none;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.active {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .nav-controls {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}