/* ============================================
   Aqara AI Space Platform - Main Stylesheet
   ============================================ */

:root {
  --color-bg: #0a0a0f;
  --color-bg-alt: #111118;
  --color-bg-card: #151520;
  --color-bg-elevated: #1a1a28;
  --color-border: rgba(255, 255, 255, 0.06);
  --color-border-light: rgba(255, 255, 255, 0.1);
  --color-text: #e8e8f0;
  --color-text-secondary: #8888a0;
  --color-text-muted: #555568;
  --color-primary: #4A90D9;
  --color-primary-glow: rgba(74, 144, 217, 0.25);
  --color-accent: #50C878;
  --color-warm: #F5A623;
  --color-purple: #9B59B6;
  --color-danger: #E74C3C;
  --gradient-main: linear-gradient(135deg, #4A90D9, #50C878);
  --gradient-hero: linear-gradient(135deg, #0a0a0f 0%, #0f1525 50%, #0a0a0f 100%);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-glow: 0 0 40px rgba(74, 144, 217, 0.1);
  --max-width: 1280px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--color-primary); text-decoration: none; }
img { max-width: 100%; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

/* Loading */
#loading-screen {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--color-bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.8s, visibility 0.8s;
}
#loading-screen.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader { text-align: center; }
.loader-svg { width: 60px; height: 60px; color: var(--color-primary); animation: spin 2s linear infinite; }
.loader p { margin-top: 16px; font-size: 14px; color: var(--color-text-secondary); letter-spacing: 2px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Navigation */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 24px;
  transition: background 0.3s, backdrop-filter 0.3s;
}
#navbar.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}
.nav-inner {
  max-width: var(--max-width); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo { color: var(--color-text); display: flex; align-items: center; gap: 8px; }
.logo-svg { height: 28px; }
.nav-links { display: flex; gap: 32px; }
.nav-link {
  font-size: 13px; font-weight: 500; color: var(--color-text-secondary);
  transition: color 0.2s; letter-spacing: 0.5px;
  position: relative;
}
.nav-link::after {
  content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 2px; background: var(--gradient-main); border-radius: 1px;
  transform: scaleX(0); transition: transform 0.3s;
}
.nav-link:hover { color: var(--color-text); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.btn-icon {
  background: transparent; border: 1px solid var(--color-border-light);
  color: var(--color-text-secondary); cursor: pointer;
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; transition: all 0.2s;
}
.btn-icon:hover { border-color: var(--color-primary); color: var(--color-text); }

/* Mobile menu */
.mobile-only { display: none; }
#menu-toggle { flex-direction: column; gap: 4px; }
#menu-toggle span { display: block; width: 18px; height: 2px; background: currentColor; border-radius: 1px; transition: 0.3s; }

/* Section styles */
section { padding: 100px 24px; position: relative; }
.section-header {
  text-align: center; max-width: 700px; margin: 0 auto 60px;
}
.section-tag {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 3px;
  color: var(--color-primary); background: var(--color-primary-glow);
  padding: 4px 16px; border-radius: 100px; margin-bottom: 16px;
}
.section-header h2 {
  font-size: 36px; font-weight: 700; letter-spacing: -1px;
  background: var(--gradient-main); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.section-header p {
  font-size: 16px; color: var(--color-text-secondary); margin-top: 12px; line-height: 1.7;
}

/* HERO */
#hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: var(--gradient-hero); padding: 120px 24px 60px;
  overflow: hidden; position: relative;
}
#hero-canvas {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(74, 144, 217, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(80, 200, 120, 0.06) 0%, transparent 50%);
}
.hero-content {
  position: relative; z-index: 1; text-align: center; max-width: 800px;
  animation: fadeUp 1s ease-out;
}
@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.hero-badge {
  display: inline-block; font-size: 12px; font-weight: 500; letter-spacing: 1px;
  color: var(--color-text-secondary); background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border); padding: 6px 20px; border-radius: 100px;
  margin-bottom: 24px;
}
.hero-title { font-size: 56px; font-weight: 800; line-height: 1.1; letter-spacing: -2px; }
.gradient-text {
  background: linear-gradient(135deg, #4A90D9, #50C878, #F5A623);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-subtitle { font-size: 18px; color: var(--color-text-secondary); margin-top: 20px; line-height: 1.6; }
.text-muted { color: var(--color-text-muted); font-size: 14px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-top: 36px; }
.hero-stats {
  display: flex; gap: 32px; justify-content: center; margin-top: 56px;
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num { display: block; font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.stat-label { font-size: 12px; color: var(--color-text-muted); margin-top: 4px; }
.scroll-indicator {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  text-align: center; color: var(--color-text-muted); font-size: 11px; letter-spacing: 2px;
}
.scroll-arrow { width: 1px; height: 24px; background: var(--color-text-muted); margin: 8px auto 0; animation: scrollBounce 2s infinite; }
@keyframes scrollBounce { 0%, 100% { transform: scaleY(0.5); opacity: 0.3; } 50% { transform: scaleY(1); opacity: 1; } }

/* Buttons */
.btn-primary, .btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.3s;
  border: none; font-family: inherit;
}
.btn-primary {
  background: var(--gradient-main); color: #fff; box-shadow: 0 4px 20px var(--color-primary-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(74, 144, 217, 0.35); }
.btn-secondary {
  background: transparent; color: var(--color-text);
  border: 1px solid var(--color-border-light);
}
.btn-secondary:hover { border-color: var(--color-primary); background: rgba(74, 144, 217, 0.08); }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* VISION */
#vision { background: var(--color-bg-alt); }
.vision-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  max-width: var(--max-width); margin: 0 auto;
}
.vision-card {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 36px; transition: all 0.4s;
}
.vision-card:hover { border-color: var(--color-primary); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.vision-icon { width: 48px; height: 48px; color: var(--color-primary); margin-bottom: 20px; }
.vision-icon svg { width: 48px; height: 48px; }
.vision-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.vision-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* FEATURES */
.features-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
  max-width: var(--max-width); margin: 0 auto;
}
.feature-card {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 32px; position: relative;
  transition: all 0.3s;
}
.feature-card:hover { border-color: var(--color-border-light); }
.feature-number {
  position: absolute; top: 20px; right: 24px;
  font-size: 48px; font-weight: 800; color: rgba(255,255,255,0.03);
  line-height: 1;
}
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.feature-detail { margin-bottom: 16px; }
.feature-detail p { font-size: 14px; color: var(--color-text-secondary); margin-bottom: 8px; }
.feature-detail ul { list-style: none; padding: 0; }
.feature-detail li {
  font-size: 13px; color: var(--color-text-secondary); padding: 4px 0 4px 16px;
  position: relative; line-height: 1.5;
}
.feature-detail li::before {
  content: ''; position: absolute; left: 2px; top: 12px;
  width: 4px; height: 4px; border-radius: 50%; background: var(--color-primary);
}
.feature-priority {
  display: inline-block; font-size: 11px; font-weight: 600; padding: 2px 10px;
  border-radius: 100px; letter-spacing: 0.5px;
}
.priority-high { background: rgba(231, 76, 60, 0.12); color: #E74C3C; }
.priority-medium { background: rgba(245, 166, 35, 0.12); color: #F5A623; }
.priority-low { background: rgba(80, 200, 120, 0.12); color: #50C878; }

/* DEMO */
#demo { background: var(--color-bg-alt); }
.demo-container {
  max-width: var(--max-width); margin: 0 auto;
}
.demo-toolbar {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px; margin-bottom: 16px;
}
.demo-tabs { display: flex; gap: 4px; background: var(--color-bg-card); padding: 4px; border-radius: var(--radius-sm); }
.demo-tab {
  padding: 8px 20px; border: none; background: transparent; color: var(--color-text-secondary);
  font-size: 13px; font-weight: 500; cursor: pointer; border-radius: 6px; transition: all 0.2s; font-family: inherit;
}
.demo-tab:hover { color: var(--color-text); }
.demo-tab.active { background: var(--color-primary); color: #fff; }
.demo-controls { display: flex; gap: 8px; }
.demo-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 14px; border: 1px solid var(--color-border-light); background: transparent;
  color: var(--color-text-secondary); border-radius: var(--radius-sm); cursor: pointer;
  font-size: 12px; font-weight: 500; transition: all 0.2s; font-family: inherit;
}
.demo-btn:hover, .demo-btn.active { border-color: var(--color-primary); color: var(--color-text); }
.demo-main {
  display: grid; grid-template-columns: 1fr 300px; gap: 16px;
}
#three-container {
  position: relative; background: var(--color-bg); border-radius: var(--radius-lg);
  overflow: hidden; height: 620px; border: 1px solid var(--color-border);
  cursor: grab;
}
#three-container:active { cursor: grabbing; }
#three-container canvas { display: block; width: 100% !important; height: 100% !important; }
.demo-hint {
  position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
  font-size: 11px; color: var(--color-text-muted); background: rgba(0,0,0,0.55);
  padding: 5px 14px; border-radius: 100px; pointer-events: none; z-index: 10;
  backdrop-filter: blur(8px); white-space: nowrap;
  border: 1px solid rgba(255,255,255,0.04);
}
#floorplan-overlay {
  position: absolute; inset: 0; z-index: 20; background: rgba(8,8,14,0.92);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.4s ease;
  backdrop-filter: blur(4px);
}
#floorplan-overlay.hidden { opacity: 0; pointer-events: none; }
#floorplan-canvas { width: 100%; height: 100%; }

.demo-sidebar {
  display: flex; flex-direction: column; gap: 10px;
  max-height: 650px; overflow-y: auto;
}
.demo-sidebar::-webkit-scrollbar { width: 3px; }
.sidebar-section {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 14px;
}
.sidebar-section h4 {
  font-size: 11px; font-weight: 700; margin-bottom: 10px;
  color: var(--color-text-secondary); letter-spacing: 0.5px;
  text-transform: uppercase;
}
.sidebar-section h4::before {
  content: '';
  display: inline-block; width: 3px; height: 10px;
  background: var(--gradient-main); border-radius: 2px;
  margin-right: 8px; vertical-align: middle;
}
.nl-input-area textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--color-border);
  background: var(--color-bg); color: var(--color-text); border-radius: var(--radius-sm);
  font-size: 13px; font-family: inherit; resize: vertical; line-height: 1.5;
}
.nl-input-area textarea:focus { outline: none; border-color: var(--color-primary); }
.nl-input-area textarea::placeholder { color: var(--color-text-muted); }
.nl-input-area { display: flex; flex-direction: column; gap: 8px; }
.style-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.style-btn {
  padding: 6px; border: 1px solid var(--color-border); background: transparent;
  color: var(--color-text-secondary); border-radius: 6px; cursor: pointer;
  font-size: 12px; font-weight: 500; transition: all 0.2s; font-family: inherit;
}
.style-btn:hover { border-color: var(--color-primary); color: var(--color-text); }
.style-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.env-controls { display: flex; flex-direction: column; gap: 10px; }
.control-row { display: flex; align-items: center; gap: 8px; }
.control-row label { font-size: 12px; color: var(--color-text-secondary); min-width: 40px; }
.control-row input[type="range"] { flex: 1; accent-color: var(--color-primary); height: 4px; }
.control-row span { font-size: 11px; color: var(--color-text-muted); min-width: 32px; text-align: right; }
.demo-actions { display: flex; gap: 8px; }
.demo-actions .btn-secondary { flex: 1; justify-content: center; }

/* Measurement overlay */
#measure-canvas {
  position: absolute; inset: 0; z-index: 21; pointer-events: all;
  cursor: crosshair;
}
#measure-canvas.hidden { display: none; }
#measure-info {
  position: absolute; top: 16px; left: 50%; transform: translateX(-50%); z-index: 22;
  background: rgba(0,0,0,0.7); backdrop-filter: blur(8px);
  padding: 6px 16px; border-radius: 100px; border: 1px solid rgba(245,166,35,0.3);
  display: flex; align-items: center; gap: 12px;
}
#measure-info.hidden { display: none; }
#measure-info span { font-size: 12px; color: #F5A623; white-space: nowrap; }
.measure-btn-sm {
  background: transparent; border: 1px solid rgba(245,166,35,0.3); color: #F5A623;
  padding: 2px 10px; border-radius: 6px; cursor: pointer; font-size: 11px;
  transition: all 0.2s; font-family: inherit;
}
.measure-btn-sm:hover { background: rgba(245,166,35,0.15); }
.measure-btn.active { border-color: #F5A623; color: #F5A623; background: rgba(245,166,35,0.1); }

/* Viewport toggle overlay */
.viewport-toggle {
  position: absolute; bottom: 14px; right: 14px; z-index: 15;
  display: flex; align-items: center; gap: 5px;
  padding: 5px 12px; border-radius: 100px;
  background: rgba(0,0,0,0.55); border: 1px solid rgba(255,255,255,0.06);
  color: var(--color-text-muted); font-size: 11px; font-weight: 500;
  cursor: pointer; transition: all 0.2s; font-family: inherit;
  backdrop-filter: blur(8px);
}
.viewport-toggle:hover { border-color: var(--color-primary); color: var(--color-text); }
.viewport-toggle.active { color: var(--color-primary); border-color: var(--color-primary); }

/* Light & Device Controls */
.light-types, .device-types {
  display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 6px; align-items: center;
}
.light-type-btn, .device-type-btn {
  padding: 4px 10px; border: 1px solid var(--color-border); background: transparent;
  color: var(--color-text-secondary); border-radius: 6px; cursor: pointer;
  font-size: 11px; font-weight: 500; transition: all 0.2s; font-family: inherit;
  white-space: nowrap;
}
.light-type-btn:hover, .device-type-btn:hover { border-color: var(--color-primary); color: var(--color-text); }
.light-type-btn.active, .device-type-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.btn-icon-sm {
  background: transparent; border: 1px solid var(--color-border); color: var(--color-text-muted);
  width: 26px; height: 26px; border-radius: 6px; cursor: pointer; font-size: 12px;
  display: flex; align-items: center; justify-content: center; transition: all 0.2s;
  margin-left: auto;
}
.btn-icon-sm:hover { border-color: var(--color-danger); color: var(--color-danger); }
.light-hint { font-size: 10px; color: var(--color-text-muted); margin-bottom: 6px; }
.light-count { font-size: 11px; color: var(--color-primary); font-weight: 600; margin-bottom: 4px; }
.placed-lights { max-height: 120px; overflow-y: auto; display: flex; flex-direction: column; gap: 4px; }
.placed-lights::-webkit-scrollbar { width: 2px; }
.light-empty { font-size: 11px; color: var(--color-text-muted); text-align: center; padding: 8px 0; }
.light-item {
  background: rgba(255,255,255,0.03); border: 1px solid var(--color-border);
  border-radius: 6px; padding: 6px 8px;
}
.light-info { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.light-type { font-size: 11px; font-weight: 600; color: var(--color-text); }
.light-pos { font-size: 9px; color: var(--color-text-muted); }
.light-controls-row { display: flex; align-items: center; gap: 4px; }
.light-controls-row label { font-size: 9px; color: var(--color-text-muted); min-width: 24px; }
.light-controls-row input[type="range"] { flex: 1; height: 3px; accent-color: var(--color-primary); }
.light-val { font-size: 9px; color: var(--color-text-muted); min-width: 20px; text-align: right; }
.light-remove {
  background: transparent; border: none; color: var(--color-text-muted); cursor: pointer;
  font-size: 12px; padding: 0 2px; transition: color 0.2s;
}
.light-remove:hover { color: var(--color-danger); }

/* CONVERSION */
.conversion-flow {
  max-width: var(--max-width); margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.flow-step {
  position: relative; text-align: center;
}
.flow-number {
  width: 32px; height: 32px; border-radius: 50%; background: var(--color-primary);
  color: #fff; font-size: 14px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 12px;
}
.flow-content h4 { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.flow-content p { font-size: 12px; color: var(--color-text-secondary); line-height: 1.5; }
.flow-preview { margin-bottom: 12px; }
.flow-canvas {
  width: 100%; aspect-ratio: 4/3; background: var(--color-bg-card);
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.recognition-svg, .layout-svg { width: 80%; height: 80%; }
.flow-arrow {
  position: absolute; right: -12px; top: 16px;
  font-size: 20px; color: var(--color-text-muted);
}
#final-3d-preview {
  position: relative;
}
.mini-3d-badge {
  position: absolute; top: 8px; right: 8px; z-index: 2;
  font-size: 10px; font-weight: 700; color: var(--color-accent);
  background: rgba(80, 200, 120, 0.15); padding: 2px 8px; border-radius: 4px;
}
.mini-scene {
  width: 80%; height: 80%; position: relative;
  perspective: 400px;
}
.mini-floor {
  width: 100%; height: 60%; background: linear-gradient(135deg, #2a2a3a, #1a1a2a);
  border-radius: 4px; transform: rotateX(60deg); transform-style: preserve-3d;
}
.mini-wall {
  position: absolute; background: var(--color-primary); opacity: 0.3; border-radius: 2px;
}
.mini-w1 { width: 60%; height: 4px; top: 20%; left: 20%; }
.mini-w2 { width: 4px; height: 50%; top: 20%; left: 50%; }

/* ARCHITECTURE */
#architecture { background: var(--color-bg-alt); }
.arch-diagram {
  max-width: 700px; margin: 0 auto; display: flex; flex-direction: column; gap: 0;
}
.arch-layer {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 24px 28px;
  display: flex; align-items: center; gap: 24px;
  border-left: 3px solid var(--layer-color);
}
.arch-layer-label {
  font-size: 12px; font-weight: 700; letter-spacing: 2px;
  color: var(--layer-color); min-width: 70px;
}
.arch-items { display: flex; flex-wrap: wrap; gap: 8px; flex: 1; }
.arch-item {
  font-size: 12px; padding: 4px 12px; background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border); border-radius: 100px; color: var(--color-text-secondary);
}
.arch-connector { height: 16px; width: 2px; background: var(--color-border); margin-left: 40px; }

.tech-stack { max-width: var(--max-width); margin: 48px auto 0; }
.tech-stack h3 { font-size: 20px; font-weight: 600; text-align: center; margin-bottom: 24px; }
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tech-item {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 16px 20px;
  font-size: 13px; display: flex; align-items: center; gap: 12px;
}
.tech-cat {
  font-size: 10px; font-weight: 700; letter-spacing: 1px;
  color: var(--color-primary); background: var(--color-primary-glow);
  padding: 2px 8px; border-radius: 4px; white-space: nowrap;
}

/* REFERENCES */
.ref-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  max-width: var(--max-width); margin: 0 auto;
}
.ref-card {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 32px; display: block;
  transition: all 0.3s; text-decoration: none; color: inherit;
}
.ref-card:hover { border-color: var(--color-primary); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.ref-number { font-size: 64px; font-weight: 800; color: rgba(255,255,255,0.03); line-height: 0.8; margin-bottom: 16px; }
.ref-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.ref-card p { font-size: 13px; color: var(--color-text-secondary); line-height: 1.5; margin-bottom: 16px; }
.ref-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.ref-tags span {
  font-size: 11px; padding: 3px 10px; background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border); border-radius: 100px; color: var(--color-text-muted);
}

/* ROADMAP */
#roadmap { background: var(--color-bg-alt); }
.timeline {
  max-width: 700px; margin: 0 auto; position: relative; padding-left: 40px;
}
.timeline::before {
  content: ''; position: absolute; left: 15px; top: 0; bottom: 0;
  width: 2px; background: var(--color-border);
}
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute; left: -34px; top: 4px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--dot-color); border: 3px solid var(--color-bg-alt);
  box-shadow: 0 0 0 2px var(--dot-color);
}
.timeline-content {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 24px;
}
.timeline-phase {
  font-size: 11px; font-weight: 700; letter-spacing: 2px; color: var(--color-primary);
  text-transform: uppercase;
}
.timeline-content h3 { font-size: 18px; font-weight: 600; margin: 8px 0; }
.timeline-content p { font-size: 14px; color: var(--color-text-secondary); }
.timeline-meta { display: flex; gap: 16px; margin-top: 12px; }
.timeline-meta span { font-size: 12px; color: var(--color-text-muted); }

/* CTA */
#cta {
  text-align: center; padding: 80px 24px;
  background: linear-gradient(135deg, rgba(74,144,217,0.08), rgba(80,200,120,0.04));
}
.cta-content { max-width: 600px; margin: 0 auto; }
.cta-content h2 { font-size: 32px; font-weight: 700; letter-spacing: -1px; margin-bottom: 16px; }
.cta-content p { font-size: 15px; color: var(--color-text-secondary); margin-bottom: 28px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; }

/* FOOTER */
footer {
  border-top: 1px solid var(--color-border); padding: 32px 24px;
}
.footer-inner {
  max-width: var(--max-width); margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
}
.footer-brand svg { height: 24px; color: var(--color-text-secondary); }
.footer-brand p { font-size: 12px; color: var(--color-text-muted); margin-top: 4px; }
.footer-links { text-align: right; }
.footer-links span { display: block; font-size: 12px; color: var(--color-text-muted); }

/* Responsive */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: 1fr; }
  .demo-main { grid-template-columns: 1fr; }
  #three-container { height: 400px; }
  .conversion-flow { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .flow-arrow:nth-child(2) { display: none; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-only { display: flex; }
  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .vision-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .ref-grid { grid-template-columns: 1fr; }
  .conversion-flow { grid-template-columns: 1fr; }
  .flow-arrow { display: none; }
  .section-header h2 { font-size: 28px; }
  .arch-layer { flex-direction: column; gap: 12px; align-items: flex-start; }
  .arch-connector { margin-left: 20px; }
  .footer-inner { flex-direction: column; text-align: center; gap: 12px; }
  .footer-links { text-align: center; }
  .demo-hint { font-size: 10px; padding: 4px 12px; }
}