/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0a0a0f;
  --bg-card: #13131a;
  --bg-card-hover: #1a1a24;
  --border: #1e1e2e;
  --text: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #6366f1;
  --accent-light: #8b5cf6;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --radius: 12px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
}

.nav-links {
  display: flex;
  gap: 32px;
  font-size: 14px;
  font-weight: 500;
}

.nav-links a {
  color: var(--text-secondary);
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--text); }

/* Hero */
.hero {
  padding: 140px 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content { position: relative; z-index: 1; }

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--accent-glow);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: #a5b4fc;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, #6366f1, #8b5cf6, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-desc strong { color: var(--text); }

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #7c3aed);
  color: white;
  box-shadow: 0 4px 24px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99, 102, 241, 0.4);
}

.hero-platforms {
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-muted);
}

/* Screenshot */
.hero-screenshot {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 60px auto 0;
  perspective: 1200px;
}

.screenshot-wrapper {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow:
    0 0 0 1px rgba(99, 102, 241, 0.1),
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 120px rgba(99, 102, 241, 0.08);
  transform: rotateX(4deg);
  transition: transform 0.4s ease;
}

.screenshot-wrapper:hover {
  transform: rotateX(0deg);
}

.screenshot-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background: #ff5f57; }
.dot-yellow { background: #febc2e; }
.dot-green { background: #28c840; }

.screenshot-title {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: 8px;
}

.screenshot-body {
  padding: 16px;
  min-height: 260px;
}

/* Mock App */
.mock-app {
  background: #0d0d14;
  border-radius: 8px;
  overflow: hidden;
  height: 228px;
}

.mock-toolbar {
  display: flex;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mock-toolbar-item {
  width: 48px;
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
}

.mock-main {
  display: flex;
  height: calc(100% - 28px);
}

.mock-sidebar {
  width: 140px;
  padding: 12px;
  border-right: 1px solid rgba(255, 255, 255, 0.05);
  flex-shrink: 0;
}

.mock-sidebar-title {
  font-size: 9px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.mock-sidebar-item {
  height: 20px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.03);
  margin-bottom: 4px;
}

.mock-sidebar-item.active {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.mock-canvas {
  flex: 1;
  position: relative;
}

.mock-node {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  min-width: 80px;
}

.mock-node-title {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.mock-node-port {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  top: 50%;
  transform: translateY(-50%);
}

.mock-node-port.left { left: -3px; }
.mock-node-port.right { right: -3px; }

.mock-panel {
  width: 120px;
  padding: 12px;
  border-left: 1px solid rgba(255, 255, 255, 0.05);
  flex-shrink: 0;
}

.mock-panel-title {
  font-size: 9px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.mock-panel-row {
  height: 14px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.03);
  margin-bottom: 6px;
}

.mock-panel-row.short { width: 60%; }

/* Section */
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-desc {
  text-align: center;
  color: var(--text-secondary);
  font-size: 17px;
  margin-bottom: 48px;
}

/* Features */
.features {
  padding: 100px 0;
  position: relative;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.25s;
}

.feature-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--icon-color) 12%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--icon-color);
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Download */
.download {
  padding: 100px 0;
  position: relative;
}

.download::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 680px;
  margin: 0 auto;
}

.download-grid.four-col {
  max-width: 900px;
  grid-template-columns: 1fr 1fr;
}

.download-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.25s;
}

.download-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.1);
}

.download-icon {
  color: var(--accent-light);
  flex-shrink: 0;
}

.download-info { flex: 1; }

.download-info h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.download-info p {
  font-size: 13px;
  color: var(--text-muted);
}

.download-ext {
  display: inline-block;
  margin-top: 6px;
  font-size: 11px;
  font-weight: 600;
  color: #a5b4fc;
  background: rgba(99, 102, 241, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
}

.download-arrow {
  color: var(--text-muted);
  transition: transform 0.2s, color 0.2s;
  flex-shrink: 0;
}

.download-card:hover .download-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

.download-note {
  text-align: center;
  margin-top: 24px;
  font-size: 13px;
  color: var(--text-muted);
}

.download-note a {
  color: #a5b4fc;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.download-note a:hover { color: var(--accent-light); }

/* Footer */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-tagline {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

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

/* Responsive */
@media (max-width: 768px) {
  .feature-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 20px; text-align: center; }
  .nav-links { gap: 20px; }
  .hero { padding: 120px 24px 60px; }
  .screenshot-wrapper { transform: none; }
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-content { animation: fadeInUp 0.6s ease-out; }
.hero-screenshot { animation: fadeInUp 0.6s ease-out 0.15s both; }
.feature-card { animation: fadeInUp 0.5s ease-out both; }
.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.15s; }
.feature-card:nth-child(3) { animation-delay: 0.2s; }
.feature-card:nth-child(4) { animation-delay: 0.25s; }
.feature-card:nth-child(5) { animation-delay: 0.3s; }
.feature-card:nth-child(6) { animation-delay: 0.35s; }