/* ============================================================
   LANDING PAGE STYLES
   ============================================================ */

.landing-body {
  background: var(--bg-primary);
  overflow-x: hidden;
}

/* Nav */
.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-primary);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 24px;
}

.landing-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.landing-nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 17px;
}
.landing-nav-brand:hover { color: var(--accent); }

.landing-nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}
.landing-nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s;
}
.landing-nav-links a:hover { color: var(--text-primary); }

.landing-btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius);
  font-size: 13px;
  transition: all 0.15s;
}
.landing-btn-outline:hover {
  border-color: var(--accent);
  background: var(--accent-muted);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(ellipse at center, rgba(56, 139, 253, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 720px;
}

.hero-badge {
  display: inline-block;
  padding: 4px 14px;
  background: var(--accent-muted);
  border: 1px solid rgba(56, 139, 253, 0.3);
  border-radius: 20px;
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-primary);
  margin: 0 0 20px;
  letter-spacing: -1px;
}

.hero-highlight {
  background: linear-gradient(135deg, #58a6ff, #79c0ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.landing-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  transition: all 0.2s;
}
.landing-btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(56, 139, 253, 0.3);
}

.landing-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius);
  transition: all 0.2s;
}
.landing-btn-secondary:hover {
  border-color: var(--text-tertiary);
  transform: translateY(-1px);
  color: var(--text-primary);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-primary);
}

.hero-stat { text-align: center; }
.hero-stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}
.hero-stat-label {
  font-size: 13px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Features */
.features {
  padding: 80px 24px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
  border-bottom: 1px solid var(--border-primary);
}

.features-inner {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

.features-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  text-align: left;
}

.feature-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 8px;
  padding: 24px;
  transition: all 0.2s;
}
.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-size: 28px;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* Landing roadmap */
.landing-roadmap {
  padding: 80px 24px;
  text-align: center;
}

.landing-roadmap-inner {
  max-width: 600px;
  margin: 0 auto;
}

.landing-path {
  text-align: left;
  position: relative;
  padding-left: 40px;
}
.landing-path::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border-primary);
}

.path-step {
  position: relative;
  margin-bottom: 28px;
}
.path-step:last-child { margin-bottom: 0; }

.path-dot {
  position: absolute;
  left: -40px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 2px var(--border-primary);
}
.path-dot--beginner { background: var(--success); box-shadow: 0 0 0 2px var(--success); }
.path-dot--intermediate { background: var(--warning); box-shadow: 0 0 0 2px var(--warning); }
.path-dot--advanced { background: var(--danger); box-shadow: 0 0 0 2px var(--danger); }
.path-dot--practice { background: var(--accent); box-shadow: 0 0 0 2px var(--accent); }

.path-content h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 4px;
}
.path-content p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* CTA */
.landing-cta {
  padding: 80px 24px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
  text-align: center;
}

.landing-cta-inner {
  max-width: 600px;
  margin: 0 auto;
}
.landing-cta h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 12px;
}
.landing-cta p {
  font-size: 16px;
  color: var(--text-secondary);
  margin: 0 0 28px;
}

/* Footer */
.landing-footer {
  padding: 24px;
  text-align: center;
  border-top: 1px solid var(--border-primary);
}
.landing-footer p {
  font-size: 13px;
  color: var(--text-tertiary);
  margin: 0;
}
.landing-footer a { color: var(--text-secondary); }
.landing-footer a:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 768px) {
  .hero-title { font-size: 2.5rem; }
  .hero-stats { gap: 24px; }
  .hero-stat-number { font-size: 1.5rem; }
  .features-grid { grid-template-columns: 1fr; }
  .landing-nav-links a:not(.landing-btn-outline) { display: none; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .hero-desc { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
}