/* Tema moderno, full-width, glass e light */
:root {
  color-scheme: light;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #eff6ff;
  color: #0f172a;
  --bg: var(--bg);
  --surface: var(--card);
  --surface-strong: var(--card);
  --border: var(--border);
  --text: var(--fg);
  --muted: var(--muted);
  --primary: var(--accent);
  --accent: var(--accent);
  --shadow: var(--shadow);
  line-height: 1.7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, rgba(99, 102, 241, 0.12), transparent 30%),
              linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
  color: var(--text);
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1400px, calc(100% - 4rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.95rem;
  text-decoration: none;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 16px;
  object-fit: contain;
  padding: 0.35rem;
  background: rgba(99, 102, 241, 0.12);
}

.brand-text {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
}

.main-nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-radius: 999px;
}

.main-nav a:hover {
  background: rgba(99, 102, 241, 0.12);
}

.menu-toggle {
  display: none;
  border: none;
  background: var(--primary);
  color: white;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  cursor: pointer;
}

.hero {
  padding: 5rem 0 3rem;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2rem;
  align-items: center;
}

.hero-copy {
  max-width: 620px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 1rem;
  margin: 0 0 1rem;
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  background: rgba(99, 102, 241, 0.12);
  border-radius: 999px;
  font-size: 0.85rem;
}

h1 {
  font-size: clamp(3rem, 4vw, 4.5rem);
  line-height: 0.98;
  margin: 0;
}

.hero-text {
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.button-primary {
  background: linear-gradient(135deg, #4338ca, #6366f1);
  color: white;
  box-shadow: 0 20px 45px rgba(67, 56, 202, 0.22);
}

.button-secondary {
  background: white;
  color: var(--text);
  border: 1px solid rgba(15, 23, 42, 0.1);
}

.button-secondary.program-button {
  padding: 0.55rem 0.9rem;
  font-size: 0.9rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.chip {
  background: rgba(99, 102, 241, 0.12);
  color: var(--primary);
  padding: 0.85rem 1rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
}

.hero-visual {
  min-height: 440px;
  display: grid;
  align-items: center;
}

.visual-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 2rem;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.visual-heading h2 {
  font-size: 1.85rem;
  margin: 0.75rem 0 1.25rem;
}

.visual-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.visual-list li {
  padding-left: 1.5rem;
  position: relative;
  color: var(--muted);
  font-weight: 500;
}

.visual-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.course-info {
  padding: 2rem 0;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1.75rem;
  padding: 1.75rem;
  text-align: center;
}

.info-value {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.info-label {
  color: var(--muted);
}

.course-layout {
  padding: 3rem 0;
}

.course-grid {
  display: grid;
  grid-template-columns: 1.45fr 0.9fr;
  gap: 2rem;
  align-items: start;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 2rem;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.card-header {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.course-overview-card p,
.course-overview-card li {
  color: var(--muted);
  line-height: 1.8;
}

.course-features {
  list-style: none;
  padding: 0;
  margin: 1.75rem 0 0;
  display: grid;
  gap: 1rem;
}

.course-features li {
  padding-left: 1.4rem;
  position: relative;
  color: var(--text);
}

.course-features li::before {
  content: '➤';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.accordion details {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(99, 102, 241, 0.14);
  border-radius: 1.5rem;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.accordion summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1rem;
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.accordion ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.accordion li {
  padding-left: 1.4rem;
  position: relative;
  color: var(--muted);
}

.accordion li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.module-badge {
  background: rgba(99, 102, 241, 0.14);
  color: var(--primary);
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9rem;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.benefit-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
}

.benefit-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 1rem;
  background: rgba(99, 102, 241, 0.12);
  color: var(--primary);
  font-size: 1.25rem;
}

.benefit-item h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.benefit-item p {
  margin: 0;
  color: var(--muted);
}

.sidebar-column {
  display: grid;
  gap: 1.5rem;
}

.sidebar-card {
  display: grid;
  gap: 1.5rem;
}

.price-tag {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.price-tag span {
  font-size: 2.5rem;
  font-weight: 800;
}

.price-tag small {
  color: var(--muted);
}

.sidebar-meta {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 1.5rem;
  background: rgba(248, 250, 255, 0.88);
}

.sidebar-meta div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
}

.sidebar-meta strong {
  font-weight: 800;
  color: var(--text);
}

.instructor-card {
  text-align: center;
}

.instructor-badge {
  display: inline-flex;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: rgba(99, 102, 241, 0.12);
  color: var(--primary);
  font-weight: 700;
}

.instructor-photo {
  width: 100%;
  max-width: 160px;
  margin: 1.5rem auto;
  display: block;
  border-radius: 1.5rem;
}

.instructor-card h3 {
  margin: 0.75rem 0 0.5rem;
}

.instructor-card p {
  margin: 0;
  color: var(--muted);
}

.instructor-stats {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.75rem;
}

.instructor-stats li {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
}

.highlight-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.highlight-list li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--muted);
}

.highlight-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.reviews-section {
  padding: 3rem 0 5rem;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.review-card {
  background: var(--surface);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 2rem;
  padding: 2rem;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.06);
}

.review-rating {
  color: var(--primary);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.review-card p {
  color: var(--muted);
  line-height: 1.8;
}

.review-card span {
  display: inline-block;
  margin-top: 1rem;
  color: var(--muted);
  font-weight: 700;
}

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.72);
}

.footer-inner {
  display: grid;
  gap: 0.75rem;
}

.footer-inner p {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 1120px) {
  .course-grid {
    grid-template-columns: 1fr;
  }

  .info-grid,
  .reviews-grid,
  .benefits-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 880px) {
  .hero-content {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: auto;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .hero {
    padding: 3.5rem 0 2rem;
  }
}

@media (max-width: 620px) {
  .hero {
    padding: 2.5rem 0 1.5rem;
  }

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

  .button {
    width: 100%;
  }
}