/* ============================================
   NEXUSAI — DESIGN SYSTEM
   Palette: Acid Neon + Deep Space
   Fonts: Syne (display) + Bricolage Grotesque (body)
   ============================================ */

:root {
  --bg-primary: #080810;
  --bg-secondary: #0d0d1a;
  --bg-card: #0f0f1e;
  --bg-card-hover: #141428;
  --border: rgba(124, 77, 255, 0.15);
  --border-bright: rgba(124, 77, 255, 0.4);
  --accent: #7c4dff;
  --accent-2: #00e5ff;
  --accent-3: #ff4081;
  --neon-green: #b2ff59;
  --text-primary: #f0eeff;
  --text-secondary: #9b8fc4;
  --text-muted: #5a5278;
  --gradient-main: linear-gradient(135deg, #7c4dff 0%, #00e5ff 100%);
  --gradient-hot: linear-gradient(135deg, #ff4081 0%, #ff9100 100%);
  --gradient-card: linear-gradient(145deg, rgba(124,77,255,0.08) 0%, rgba(0,229,255,0.04) 100%);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4), 0 0 0 1px rgba(124,77,255,0.1);
  --shadow-glow: 0 0 40px rgba(124,77,255,0.3);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --font-display: 'Syne', sans-serif;
  --font-body: 'Bricolage Grotesque', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============ RESET & BASE ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

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

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; }

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ============ TYPOGRAPHY ============ */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.15; }

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============ BUTTONS ============ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--gradient-main);
  color: white;
  border-radius: 50px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(124,77,255,0.5); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  color: var(--text-secondary);
  border-radius: 50px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-ghost:hover { color: var(--text-primary); border-color: var(--border-bright); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  color: var(--text-primary);
  border: 1px solid var(--border-bright);
  border-radius: 50px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  background: transparent;
  cursor: pointer;
}
.btn-outline:hover { background: rgba(124,77,255,0.1); border-color: var(--accent); transform: translateY(-2px); }

.btn-lg { padding: 16px 32px; font-size: 1rem; }

/* ============ CONTAINER ============ */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============ NAVBAR ============ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(8, 8, 16, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--text-primary);
}
.logo-icon {
  font-size: 1.5rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.nav-links a {
  padding: 8px 16px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
}
.nav-links a:hover { color: var(--text-primary); background: rgba(124,77,255,0.1); }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--text-secondary); border-radius: 2px; transition: var(--transition); }

/* ============ HERO ============ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}
.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #7c4dff 0%, transparent 70%);
  top: -200px; left: -100px;
  animation: orbFloat 8s ease-in-out infinite;
}
.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #00e5ff 0%, transparent 70%);
  top: 100px; right: -100px;
  animation: orbFloat 10s ease-in-out infinite reverse;
}
.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #ff4081 0%, transparent 70%);
  bottom: 0; left: 40%;
  animation: orbFloat 12s ease-in-out infinite;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 30px) scale(0.95); }
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(124,77,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,77,255,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(124,77,255,0.1);
  border: 1px solid rgba(124,77,255,0.3);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-2);
  margin-bottom: 24px;
  width: fit-content;
}
.badge-dot {
  width: 8px; height: 8px;
  background: var(--neon-green);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
.hero-title {
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 480px;
}
.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

/* Hero Visual */
.hero-visual { position: relative; }
.chat-preview {
  background: var(--bg-card);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-glow), var(--shadow-card);
  animation: floatCard 6s ease-in-out infinite;
}
@keyframes floatCard {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}
.chat-preview-header {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  background: rgba(124,77,255,0.05);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.model-pill {
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.model-pill:hover { border-color: var(--accent); color: var(--text-primary); }
.active-pill {
  background: rgba(124,77,255,0.2);
  border-color: var(--accent);
  color: var(--text-primary);
}
.model-favicon { width: 14px; height: 14px; }
.chat-preview-body { padding: 20px; display: flex; flex-direction: column; gap: 16px; }
.preview-msg { padding: 12px 16px; border-radius: 12px; font-size: 0.88rem; line-height: 1.5; }
.user-msg {
  background: rgba(124,77,255,0.15);
  border: 1px solid rgba(124,77,255,0.2);
  align-self: flex-end;
  max-width: 80%;
  color: var(--text-primary);
}
.ai-msg {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.ai-avatar {
  width: 32px; height: 32px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}
.ai-text {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-secondary);
}
.cursor-blink {
  animation: blink 1s step-end infinite;
  color: var(--accent);
  font-weight: 700;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* ============ SECTION COMMON ============ */
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(124,77,255,0.1);
  border: 1px solid rgba(124,77,255,0.3);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.section-sub { font-size: 1rem; color: var(--text-secondary); max-width: 560px; margin: 0 auto; }

/* ============ MODELS SECTION ============ */
.models-section { padding: 120px 0; }

.models-filter {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 20px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: rgba(124,77,255,0.15);
  border-color: var(--accent);
  color: var(--text-primary);
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.model-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.model-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}
.model-card-glow {
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at center, rgba(124,77,255,0.08) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.model-card:hover .model-card-glow { opacity: 1; }

.featured-card {
  border-color: rgba(124,77,255,0.4);
  background: linear-gradient(145deg, rgba(124,77,255,0.08) 0%, var(--bg-card) 100%);
}

.model-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.model-logo {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.model-logo svg { width: 28px; height: 28px; }
.openai-logo { background: rgba(255,255,255,0.08); }
.gemini-logo { background: rgba(66,133,244,0.1); }
.claude-logo { background: rgba(204,120,92,0.1); }
.grok-logo { background: rgba(255,255,255,0.05); }
.mistral-logo { background: rgba(255,112,0,0.1); }
.meta-logo { background: rgba(6,104,225,0.1); }
.deepseek-logo { background: rgba(26,111,224,0.1); }
.perplexity-logo { background: rgba(32,178,170,0.1); }
.qwen-logo { background: rgba(107,33,168,0.1); }
.gemma-logo { background: rgba(66,133,244,0.1); }

.model-info { flex: 1; min-width: 0; }
.model-info h3 { font-size: 1rem; font-weight: 700; margin-bottom: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.model-maker { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; }

.model-badge {
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  flex-shrink: 0;
}
.badge-hot { background: rgba(255,64,129,0.2); color: #ff4081; border: 1px solid rgba(255,64,129,0.3); }
.badge-new { background: rgba(178,255,89,0.15); color: var(--neon-green); border: 1px solid rgba(178,255,89,0.3); }
.badge-featured { background: rgba(124,77,255,0.2); color: var(--accent); border: 1px solid rgba(124,77,255,0.4); }

.model-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 16px; }

.model-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 20px; }
.tag {
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.model-cta {
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  transition: var(--transition);
  font-family: var(--font-display);
}
.model-cta:hover { color: var(--accent-2); gap: 4px; }

/* Admin locked card */
.admin-locked-card {
  border: 1px dashed rgba(255,64,129,0.3);
  background: rgba(255,64,129,0.03);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
}
.admin-glow { background: radial-gradient(circle at center, rgba(255,64,129,0.08) 0%, transparent 60%); }
.lock-overlay {
  text-align: center;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.lock-icon { font-size: 2rem; margin-bottom: 4px; }
.lock-overlay p { font-weight: 700; font-size: 1rem; color: var(--text-primary); }
.lock-overlay span { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }
.btn-unlock {
  margin-top: 12px;
  padding: 8px 20px;
  background: rgba(255,64,129,0.15);
  border: 1px solid rgba(255,64,129,0.4);
  border-radius: 50px;
  color: #ff4081;
  font-size: 0.82rem;
  font-weight: 700;
  transition: var(--transition);
}
.btn-unlock:hover { background: rgba(255,64,129,0.25); transform: translateY(-2px); }

/* ============ FEATURES ============ */
.features-section { padding: 120px 0; background: var(--bg-secondary); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
}
.feature-card:hover { border-color: var(--border-bright); transform: translateY(-4px); }
.feature-large { grid-column: span 2; }
.feature-icon { font-size: 2rem; margin-bottom: 16px; }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; }
.feature-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

.switch-demo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.switch-item {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: var(--transition);
}
.switch-item.active { background: rgba(124,77,255,0.2); border-color: var(--accent); color: var(--text-primary); }
.switch-arrow { color: var(--text-muted); font-size: 0.9rem; }

.code-snippet {
  margin-top: 24px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  overflow-x: auto;
}
.code-snippet pre { margin: 0; }
.code-snippet code { font-family: 'Courier New', monospace; font-size: 0.82rem; line-height: 1.7; color: var(--text-secondary); }
.code-key { color: #ff4081; font-weight: 700; }
.code-str { color: var(--neon-green); }
.code-val { color: var(--accent-2); }

/* ============ PRICING ============ */
.pricing-section { padding: 120px 0; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  position: relative;
  transition: var(--transition);
}
.pricing-card:hover { transform: translateY(-4px); border-color: var(--border-bright); }
.pricing-featured {
  border-color: var(--accent);
  background: linear-gradient(145deg, rgba(124,77,255,0.1) 0%, var(--bg-card) 100%);
  box-shadow: 0 0 40px rgba(124,77,255,0.2);
}
.plan-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: var(--gradient-main);
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.plan-name { font-family: var(--font-display); font-size: 1rem; font-weight: 700; color: var(--text-muted); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.1em; }
.plan-price { margin-bottom: 32px; }
.price-num { font-family: var(--font-display); font-size: 3rem; font-weight: 800; }
.price-period { font-size: 1rem; color: var(--text-muted); }
.plan-features { display: flex; flex-direction: column; gap: 12px; margin-bottom: 32px; }
.plan-features li { font-size: 0.88rem; color: var(--text-secondary); }
.plan-features li:has(✓) { color: var(--text-primary); }
.plan-btn { width: 100%; justify-content: center; }

/* ============ FOOTER ============ */
.footer { padding: 80px 0 40px; border-top: 1px solid var(--border); }
.footer-top { display: grid; grid-template-columns: 1fr 2fr; gap: 80px; margin-bottom: 60px; }
.footer-brand p { font-size: 0.88rem; color: var(--text-muted); margin-top: 16px; max-width: 280px; line-height: 1.7; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 { font-family: var(--font-display); font-size: 0.85rem; font-weight: 700; color: var(--text-primary); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 4px; }
.footer-col a { font-size: 0.88rem; color: var(--text-muted); transition: var(--transition); }
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 32px; border-top: 1px solid var(--border); font-size: 0.82rem; color: var(--text-muted); flex-wrap: wrap; gap: 8px; }

/* ============ ANIMATIONS ============ */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in-up.visible { opacity: 1; transform: translateY(0); }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; gap: 60px; text-align: center; }
  .hero-sub { max-width: 100%; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: flex; justify-content: center; }
  .chat-preview { max-width: 480px; width: 100%; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-large { grid-column: span 2; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions { display: none; }
  .nav-hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(8,8,16,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    border-bottom: 1px solid var(--border);
    gap: 4px;
  }
  .nav-links.open + .nav-actions { display: flex; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-large { grid-column: span 1; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .models-grid { grid-template-columns: 1fr; }
  .hero { padding: 100px 24px 60px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.2rem; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn-primary, .hero-cta .btn-outline { justify-content: center; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .stat-divider { display: none; }
  .footer-links { grid-template-columns: 1fr; }
}