/* ============================
   HammerDown — Luxury Collector Intelligence
   Deep black + champagne gold aesthetic
   ============================ */

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

:root {
  /* Brand Colors */
  --gold: #C9A96E;
  --gold-hover: #D4B87E;
  --gold-subtle: rgba(201, 169, 110, 0.1);
  --gold-border: rgba(201, 169, 110, 0.2);

  /* Surfaces — Dark Mode (default) */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-surface: #141414;
  --bg-elevated: #1a1a1a;
  --bg-hover: #1e1e1e;
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.12);

  /* Text */
  --text-primary: #FAFAFA;
  --text-secondary: #A0A0A0;
  --text-muted: #666666;
  --text-faint: #444444;

  /* Status */
  --sold: #4CAF50;
  --no-sale: #F44336;

  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Switzer', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
}

/* Light Mode */
html:not(.dark) {
  --bg-primary: #FAFAFA;
  --bg-secondary: #F0F0F0;
  --bg-surface: #FFFFFF;
  --bg-elevated: #FFFFFF;
  --bg-hover: #F5F5F5;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.15);
  --text-primary: #111111;
  --text-secondary: #555555;
  --text-muted: #888888;
  --text-faint: #BBBBBB;
  --gold: #B08D4C;
  --gold-hover: #9A7A3E;
  --gold-subtle: rgba(176, 141, 76, 0.08);
  --gold-border: rgba(176, 141, 76, 0.2);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--duration-slow) var(--ease-out), color var(--duration-slow) var(--ease-out);
  overflow-x: hidden;
}

/* ============================
   Typography
   ============================ */

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
}

em {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--gold);
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--gold-hover);
}

/* ============================
   Navigation
   ============================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background var(--duration-normal) var(--ease-out);
}

html:not(.dark) .navbar {
  background: rgba(250, 250, 250, 0.85);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: baseline;
  gap: 0;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-h {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.logo-text {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
}

.nav-link {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width var(--duration-normal) var(--ease-out);
}

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

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.invitation-badge {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold-border);
  padding: 4px 12px;
  border-radius: 100px;
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.theme-toggle:hover {
  border-color: var(--gold-border);
  color: var(--gold);
}

.dark .icon-sun { display: none; }
.dark .icon-moon { display: block; }
html:not(.dark) .icon-sun { display: block; }
html:not(.dark) .icon-moon { display: none; }

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
}

/* ============================
   Buttons
   ============================ */

.btn-gold {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 24px;
  background: var(--gold);
  color: #0a0a0a;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  text-decoration: none;
}

.btn-gold:hover {
  background: var(--gold-hover);
  color: #0a0a0a;
  transform: translateY(-1px);
}

.btn-gold:active {
  transform: translateY(0);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 24px;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 14px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 12px;
}

/* ============================
   Hero
   ============================ */

.hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(64px + var(--space-4xl)) var(--space-lg) var(--space-3xl);
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold-border);
  padding: 6px 20px;
  border-radius: 100px;
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.8s var(--ease-out) both;
}

.hero-title {
  font-size: clamp(36px, 6vw, 64px);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s var(--ease-out) 0.1s both;
}

.hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.7;
  animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s var(--ease-out) 0.3s both;
}

.hero-gradient {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(201, 169, 110, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

html:not(.dark) .hero-gradient {
  background: radial-gradient(ellipse at center, rgba(176, 141, 76, 0.04) 0%, transparent 70%);
}

/* ============================
   Sections
   ============================ */

.section {
  padding: var(--space-4xl) var(--space-lg);
}

.section-alt {
  background: var(--bg-secondary);
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  margin-bottom: var(--space-md);
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ============================
   Search Form
   ============================ */

.search-form {
  margin-bottom: var(--space-2xl);
}

.search-fields {
  display: flex;
  gap: var(--space-md);
  align-items: flex-end;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: border-color var(--duration-normal) var(--ease-out);
}

.search-fields:focus-within {
  border-color: var(--gold-border);
}

.field-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.field-group label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.field-group input, .vin-input {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.field-group input::placeholder, .vin-input::placeholder {
  color: var(--text-faint);
}

.field-group input:focus, .vin-input:focus {
  border-color: var(--gold);
}

.search-btn {
  white-space: nowrap;
  align-self: flex-end;
  padding: 12px 28px;
}

/* ============================
   Stats Bar
   ============================ */

.stats-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.5s var(--ease-out) both;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 24px;
  color: var(--text-primary);
}

.stat-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.stat-divider {
  width: 1px;
  height: 32px;
  background: var(--border);
}

/* ============================
   Results
   ============================ */

.results-container {
  min-height: 200px;
}

.results-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-4xl) var(--space-lg);
  text-align: center;
  color: var(--text-muted);
}

.empty-icon {
  margin-bottom: var(--space-md);
  opacity: 0.3;
}

.results-empty p {
  font-size: 15px;
}

.results-loading {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-lg);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-lg);
}

/* Result Card */
.result-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--duration-normal) var(--ease-out);
  animation: fadeInUp 0.5s var(--ease-out) both;
  position: relative;
  overflow: hidden;
}

.result-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

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

.result-card:hover::before {
  opacity: 1;
}

.result-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-md);
}

.result-ymm {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.3;
  color: var(--text-primary);
}

.result-trim {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.result-badge {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
}

.badge-sold {
  background: rgba(76, 175, 80, 0.12);
  color: var(--sold);
}

.badge-nosale {
  background: rgba(244, 67, 54, 0.12);
  color: var(--no-sale);
}

.result-price {
  font-family: var(--font-display);
  font-size: 32px;
  color: var(--gold);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.result-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.result-house {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.result-date {
  font-size: 12px;
  color: var(--text-muted);
}

.result-link {
  font-size: 12px;
  font-weight: 500;
  color: var(--gold);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--duration-fast) var(--ease-out);
}

.result-link:hover {
  gap: 8px;
}

/* ============================
   Skeleton Loaders
   ============================ */

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton-card {
  background: linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-elevated) 50%, var(--bg-surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-lg);
  height: 180px;
  border: 1px solid var(--border);
}

.skeleton-text {
  height: 14px;
  background: linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-elevated) 50%, var(--bg-surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

/* ============================
   VIN Decoder
   ============================ */

.vin-form {
  max-width: 640px;
  margin: 0 auto var(--space-2xl);
}

.vin-input-group {
  display: flex;
  gap: var(--space-md);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: border-color var(--duration-normal) var(--ease-out);
}

.vin-input-group:focus-within {
  border-color: var(--gold-border);
}

.vin-input {
  flex: 1;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 16px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.vin-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: var(--space-sm);
  text-align: center;
}

.vin-card {
  max-width: 640px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  animation: fadeInUp 0.5s var(--ease-out) both;
}

.vin-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.vin-card-header h3 {
  font-family: var(--font-display);
  font-size: 22px;
}

.vin-badge {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
  background: var(--gold-subtle);
  color: var(--gold);
}

.vin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.vin-item {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.vin-item:nth-child(odd) {
  border-right: 1px solid var(--border);
}

.vin-item-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.vin-item-value {
  font-size: 15px;
  color: var(--text-primary);
}

/* ============================
   Market Intelligence
   ============================ */

.intel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.intel-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.intel-card:hover {
  border-color: var(--gold-border);
}

.intel-card-accent {
  border-color: var(--gold-border);
  background: linear-gradient(135deg, var(--bg-surface), var(--gold-subtle));
}

.intel-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--space-lg) var(--space-md);
  color: var(--gold);
}

.intel-card-header h3 {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.intel-card-body {
  padding: 0 var(--space-lg) var(--space-lg);
}

.intel-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.kpi {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: var(--space-md);
}

.kpi:last-child {
  margin-bottom: 0;
}

.kpi-value {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--text-primary);
}

.kpi-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* House row */
.house-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border);
}

.house-row:last-child {
  border-bottom: none;
}

.house-name {
  font-size: 14px;
  color: var(--text-primary);
}

.house-count {
  font-size: 14px;
  font-family: var(--font-display);
  color: var(--text-secondary);
}

/* Make row */
.make-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border);
}

.make-row:last-child {
  border-bottom: none;
}

.make-name {
  font-size: 14px;
  color: var(--text-primary);
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-out);
}

.make-name:hover {
  color: var(--gold);
}

.make-count {
  font-size: 14px;
  font-family: var(--font-display);
  color: var(--text-secondary);
}

/* ============================
   About
   ============================ */

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.about-card {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.about-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid var(--gold-border);
  color: var(--gold);
  margin-bottom: var(--space-lg);
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  margin-bottom: var(--space-md);
}

.about-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 360px;
  margin: 0 auto;
}

/* ============================
   Waitlist
   ============================ */

.waitlist-container {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.waitlist-form {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.waitlist-form input {
  flex: 1;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.waitlist-form input::placeholder {
  color: var(--text-faint);
}

.waitlist-form input:focus {
  border-color: var(--gold);
}

.waitlist-note {
  font-size: 13px;
  color: var(--gold);
  margin-top: var(--space-md);
  min-height: 20px;
}

/* ============================
   Footer
   ============================ */

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-3xl) var(--space-lg) var(--space-xl);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--border);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-tagline {
  font-size: 14px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-xl);
}

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

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

.footer-bottom p {
  font-size: 12px;
  color: var(--text-muted);
}

.footer-meta {
  display: flex;
  gap: var(--space-lg);
}

.footer-meta a {
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-meta a:hover {
  color: var(--gold);
}

/* ============================
   Animations
   ============================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Intersection Observer animation triggers */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================
   Mobile Menu
   ============================ */

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  z-index: 99;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  padding: var(--space-lg);
  flex-direction: column;
  gap: var(--space-md);
  animation: fadeIn 0.2s var(--ease-out) both;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  font-size: 15px;
  color: var(--text-secondary);
  padding: var(--space-sm) 0;
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

.mobile-menu a:hover {
  color: var(--gold);
}

/* ============================
   Responsive
   ============================ */

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .invitation-badge {
    display: none;
  }

  .nav-actions .btn-gold {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .search-fields {
    flex-direction: column;
  }

  .search-btn {
    width: 100%;
    justify-content: center;
  }

  .stats-bar {
    gap: var(--space-md);
    padding: var(--space-md);
  }

  .stat-divider {
    display: none;
  }

  .stat-item {
    flex: 1;
    min-width: 80px;
  }

  .stat-value {
    font-size: 18px;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }

  .vin-input-group {
    flex-direction: column;
  }

  .vin-grid {
    grid-template-columns: 1fr;
  }

  .vin-item:nth-child(odd) {
    border-right: none;
  }

  .intel-grid {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .footer-links {
    flex-wrap: wrap;
    gap: var(--space-md);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  .waitlist-form {
    flex-direction: column;
  }

  .hero-title {
    font-size: clamp(28px, 7vw, 48px);
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--space-3xl) var(--space-md);
  }

  .result-price {
    font-size: 26px;
  }

  .kpi-value {
    font-size: 22px;
  }
}

/* ============================
   Scrollbar (dark mode polish)
   ============================ */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ============================
   Utilities
   ============================ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}