:root {
  --bg-primary: #141414;
  --bg-secondary: #1c1c1c;
  --bg-card: #232323;
  --border-subtle: #2e2e2e;
  --text-primary: #f4f1ea;
  --text-secondary: #b8b1a3;
  --text-muted: #7a746a;
  --accent: #e89a3c;
  --accent-hover: #f2a74c;
  --accent-soft: rgba(232, 154, 60, 0.12);
}

* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
}

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

.font-display {
  font-family: 'Inter', sans-serif;
  letter-spacing: -0.02em;
}

.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-card { background-color: var(--bg-card); }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent); }

.border-subtle { border-color: var(--border-subtle); }

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  background-color: var(--accent);
  color: #141414;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  background-color: transparent;
  color: var(--text-primary);
  font-weight: 500;
  border: 1px solid var(--border-subtle);
  border-radius: 0.5rem;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.course-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.3s ease;
  cursor: pointer;
}

.course-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.course-card.expanded {
  cursor: default;
}

.module-item {
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.25rem 0;
}

.module-item:last-child {
  border-bottom: none;
}

.module-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--accent-soft);
  color: var(--accent);
  border-radius: 0.5rem;
  font-weight: 600;
  flex-shrink: 0;
}

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.625rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.social-icon:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.nav-link {
  color: var(--text-secondary);
  transition: color 0.2s ease;
  font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

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

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

.expand-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.expand-content.open {
  max-height: 10000px;
}

.mobile-menu {
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.mobile-menu.open {
  transform: translateX(0);
}

.hero-gradient {
  background: radial-gradient(ellipse at top, rgba(232, 154, 60, 0.08) 0%, transparent 60%);
}

.avatar-placeholder {
  background: linear-gradient(135deg, var(--accent) 0%, #c77a1f 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #141414;
  font-weight: 700;
  font-size: 3rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  background-color: var(--accent-soft);
  color: var(--accent);
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.prose-custom p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.prose-custom p:last-child {
  margin-bottom: 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.75rem;
}

@media (min-width: 768px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pricing-card {
  position: relative;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 0.875rem;
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
}

.pricing-card-featured {
  border-color: var(--accent);
  background-color: var(--accent-soft);
}

.pricing-badge {
  position: absolute;
  top: -0.625rem;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--accent);
  color: #141414;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  text-transform: uppercase;
  white-space: nowrap;
}

.pricing-tier {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  min-height: 2.75rem;
  line-height: 1.3;
}

.pricing-price {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.pricing-currency {
  color: var(--accent);
  font-weight: 600;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.pricing-features li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
}

.pricing-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: var(--accent);
}

.pricing-cta {
  width: 100%;
  padding: 0.75rem 1.25rem;
  font-size: 0.9375rem;
}

.case-card {
  display: block;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent);
  border-radius: 0.75rem;
  padding: 1.25rem 1.5rem;
  color: inherit;
}

.case-card .case-title {
  color: var(--text-primary);
  font-style: italic;
}

.case-video {
  margin-top: 1rem;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 0.5rem;
  display: block;
  background-color: #000;
}

.audience-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  padding: 1.5rem;
}

.audience-card h3 {
  color: var(--text-primary);
}

.module-accordion {
  padding: 0;
}

.module-accordion .module-item {
  padding: 0;
}

.module-summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.module-summary::-webkit-details-marker { display: none; }
.module-summary::marker { content: ""; }

.module-summary .module-title {
  flex: 1;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1.0625rem;
}

.module-chevron {
  color: var(--text-muted);
  font-size: 1.5rem;
  line-height: 1;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.module-item[open] .module-chevron {
  transform: rotate(45deg);
  color: var(--accent);
}

.module-desc {
  padding: 0 0 1.25rem calc(2.5rem + 1rem);
  color: var(--text-secondary);
  line-height: 1.7;
}

@media (max-width: 640px) {
  .module-desc {
    padding-left: 0;
  }
}