/* ═══════════════════════════════════════════════════════════════════
   CarShake Design System — World-Class UI/UX
   Mobile-first, accessible, smooth micro-interactions
   ═══════════════════════════════════════════════════════════════════ */

/* ── Root Variables ─────────────────────────────────────────────── */
:root {
  /* Colors */
  --cs-gold: #D4A843;
  --cs-gold-light: #FFF8E7;
  --cs-gold-dark: #B8922E;
  --cs-bg: #FAFAF8;
  --cs-surface: #FFFFFF;
  --cs-text: #1C1C1E;
  --cs-text-secondary: #6B7280;
  --cs-text-muted: #9CA3AF;
  --cs-border: #E4E4E7;
  --cs-border-light: #F0F0F2;
  --cs-dark: #1C1C1E;
  --cs-dark-surface: #2A2A2C;
  --cs-dark-border: #3F3F46;
  --cs-error: #DC2626;
  --cs-error-bg: #FEF2F2;
  --cs-error-border: #FECACA;
  --cs-success: #16A34A;
  --cs-success-bg: #F0FDF4;
  --cs-success-border: #BBF7D0;
  --cs-warning: #D97706;
  --cs-warning-bg: #FFFBEB;

  /* Typography */
  --cs-font-body: 'DM Sans', system-ui, -apple-system, sans-serif;
  --cs-font-display: 'Playfair Display', Georgia, serif;
  --cs-font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

  /* Spacing (6px base unit) */
  --cs-space-1: 0.375rem;   /* 6px  */
  --cs-space-2: 0.75rem;    /* 12px */
  --cs-space-3: 1.125rem;   /* 18px */
  --cs-space-4: 1.5rem;     /* 24px */
  --cs-space-5: 2.25rem;    /* 36px */
  --cs-space-6: 3rem;       /* 48px */
  --cs-space-7: 4.5rem;     /* 72px */

  /* Radii */
  --cs-radius-sm: 8px;
  --cs-radius-md: 12px;
  --cs-radius-lg: 16px;
  --cs-radius-xl: 24px;
  --cs-radius-full: 9999px;

  /* Shadows */
  --cs-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.04);
  --cs-shadow-md: 0 2px 8px -2px rgb(0 0 0 / 0.08), 0 1px 3px 0 rgb(0 0 0 / 0.04);
  --cs-shadow-lg: 0 8px 24px -6px rgb(0 0 0 / 0.10), 0 2px 6px 0 rgb(0 0 0 / 0.04);
  --cs-shadow-xl: 0 16px 40px -8px rgb(0 0 0 / 0.12);

  /* Touch */
  --cs-touch-min: 44px;

  /* Transitions */
  --cs-transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --cs-transition-base: 200ms cubic-bezier(0.16, 1, 0.3, 1);
  --cs-transition-slow: 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Reset & Optimized Base ─────────────────────────────────────── */
*,*::before,*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--cs-font-body);
  color: var(--cs-text);
  background: var(--cs-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

/* ── Typography Scale ───────────────────────────────────────────── */
.cs-h1 {
  font-family: var(--cs-font-display);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--cs-text);
  margin: 0 0 var(--cs-space-3);
  font-size: clamp(2rem, 5.5vw, 3.5rem);
}

.cs-h2 {
  font-family: var(--cs-font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--cs-text);
  margin: 0 0 var(--cs-space-2);
  font-size: clamp(1.375rem, 3.5vw, 2rem);
}

.cs-h3 {
  font-family: var(--cs-font-display);
  font-weight: 700;
  line-height: 1.3;
  color: var(--cs-text);
  margin: 0 0 var(--cs-space-2);
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
}

.cs-body {
  font-size: clamp(0.9375rem, 2vw, 1.0625rem);
  line-height: 1.7;
  color: var(--cs-text-secondary);
  margin: 0 0 var(--cs-space-3);
}

.cs-body-sm {
  font-size: clamp(0.8125rem, 1.5vw, 0.875rem);
  line-height: 1.6;
  color: var(--cs-text-secondary);
  margin: 0 0 var(--cs-space-2);
}

.cs-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cs-gold);
  margin: 0 0 var(--cs-space-1);
}

/* ── Layout System ──────────────────────────────────────────────── */
.cs-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.cs-page > main {
  flex: 1;
}

.cs-container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.cs-container-wide {
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.cs-section {
  padding: var(--cs-space-5) 0;
}

.cs-section-compact {
  padding: var(--cs-space-4) 0;
}

/* ── Header / Navigation ────────────────────────────────────────── */
.cs-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--cs-border);
}

.cs-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 880px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  gap: 1rem;
}

.cs-logo {
  font-family: var(--cs-font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--cs-gold);
  text-decoration: none;
  white-space: nowrap;
  transition: opacity var(--cs-transition-fast);
}

.cs-logo:hover { opacity: 0.85; }
.cs-logo::after { content: ''; } /* For :focus-visible to attach to */

.cs-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.cs-nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--cs-text-secondary);
  text-decoration: none;
  border-radius: var(--cs-radius-sm);
  transition: all var(--cs-transition-fast);
  white-space: nowrap;
}

.cs-nav-link:hover {
  color: var(--cs-text);
  background: rgba(0,0,0,0.04);
}

.cs-nav-link:active {
  transform: scale(0.97);
}

.cs-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--cs-touch-min);
  padding: 0 1.25rem;
  background: var(--cs-gold);
  color: white !important;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--cs-radius-md);
  font-size: 0.875rem;
  white-space: nowrap;
  border: none;
  cursor: pointer;
  transition: all var(--cs-transition-base);
  box-shadow: 0 1px 3px rgba(212, 168, 67, 0.2);
}

.cs-nav-cta:hover {
  background: var(--cs-gold-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(212, 168, 67, 0.3);
}

.cs-nav-cta:active {
  transform: translateY(0) scale(0.97);
}

/* ── Buttons ────────────────────────────────────────────────────── */
.cs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--cs-touch-min);
  padding: 0 1.75rem;
  font-weight: 600;
  font-size: 1rem;
  font-family: var(--cs-font-body);
  border: none;
  border-radius: var(--cs-radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--cs-transition-base);
  gap: 0.5rem;
  white-space: nowrap;
}

.cs-btn-primary {
  background: var(--cs-gold);
  color: white;
  box-shadow: 0 1px 3px rgba(212, 168, 67, 0.2);
}

.cs-btn-primary:hover {
  background: var(--cs-gold-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(212, 168, 67, 0.3);
}

.cs-btn-primary:active {
  transform: translateY(0) scale(0.97);
  box-shadow: 0 1px 3px rgba(212, 168, 67, 0.2);
}

.cs-btn-secondary {
  background: var(--cs-surface);
  color: var(--cs-text);
  border: 1px solid var(--cs-border);
  box-shadow: var(--cs-shadow-sm);
}

.cs-btn-secondary:hover {
  border-color: var(--cs-text-muted);
  background: #F9F9FB;
  transform: translateY(-1px);
  box-shadow: var(--cs-shadow-md);
}

.cs-btn-secondary:active {
  transform: translateY(0) scale(0.97);
}

.cs-btn:focus-visible,
.cs-nav-link:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cs-gold);
  outline-offset: 2px;
}

/* ── Cards ──────────────────────────────────────────────────────── */
.cs-card {
  background: var(--cs-surface);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius-lg);
  padding: var(--cs-space-4);
  transition: all var(--cs-transition-base);
}

.cs-card:hover {
  border-color: var(--cs-gold);
  box-shadow: var(--cs-shadow-md);
}

.cs-card-interactive {
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.cs-card-interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--cs-shadow-lg);
  border-color: var(--cs-gold);
}

.cs-card-interactive:active {
  transform: translateY(0);
}

.cs-card-gold-border {
  border: 2px solid var(--cs-gold);
  background: var(--cs-gold-light);
}

.cs-card-dark {
  background: var(--cs-dark);
  border-color: var(--cs-dark-border);
}

/* ── Badge / Step Number ────────────────────────────────────────── */
.cs-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--cs-radius-full);
  background: var(--cs-gold);
  color: white;
  font-weight: 700;
  font-size: 0.9375rem;
  flex-shrink: 0;
}

.cs-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--cs-radius-full);
  background: var(--cs-gold-light);
  color: var(--cs-gold-dark);
}

/* ── Social Proof Bar ───────────────────────────────────────────── */
.cs-proof-bar {
  display: flex;
  justify-content: center;
  gap: var(--cs-space-4);
  flex-wrap: wrap;
  color: var(--cs-text-muted);
  font-size: 0.8125rem;
  margin-top: var(--cs-space-4);
}

.cs-proof-item {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

/* ── Email Capture Form ─────────────────────────────────────────── */
.cs-form-stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 380px;
  margin: 0 auto;
}

.cs-email-input {
  width: 100%;
  padding: 0.875rem 1.125rem;
  border: 1px solid var(--cs-dark-border);
  border-radius: var(--cs-radius-md);
  background: var(--cs-dark-surface);
  color: white;
  font-size: 0.9375rem;
  font-family: var(--cs-font-body);
  text-align: center;
  transition: border-color var(--cs-transition-fast), box-shadow var(--cs-transition-fast);
}

.cs-email-input::placeholder {
  color: #6B7280;
}

.cs-email-input:focus {
  outline: none;
  border-color: var(--cs-gold);
  box-shadow: 0 0 0 3px rgba(212, 168, 67, 0.15);
}

.cs-email-input-light {
  border-color: var(--cs-border);
  background: var(--cs-surface);
  color: var(--cs-text);
}

.cs-email-btn {
  padding: 0.875rem 1.125rem;
  border-radius: var(--cs-radius-md);
  background: var(--cs-gold);
  color: white;
  font-weight: 700;
  border: none;
  cursor: pointer;
  font-size: 0.9375rem;
  font-family: var(--cs-font-body);
  transition: all var(--cs-transition-base);
}

.cs-email-btn:hover {
  background: var(--cs-gold-dark);
  transform: translateY(-1px);
}

.cs-email-btn:active {
  transform: translateY(0) scale(0.98);
}

.cs-email-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ── Breadcrumbs ────────────────────────────────────────────────── */
.cs-breadcrumb {
  font-size: 0.8125rem;
  color: var(--cs-text-muted);
  margin-bottom: var(--cs-space-3);
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.cs-breadcrumb a {
  color: var(--cs-gold);
  text-decoration: none;
  font-weight: 500;
  transition: opacity var(--cs-transition-fast);
  padding: 0.25rem 0.125rem;
}

.cs-breadcrumb a:hover {
  opacity: 0.75;
}

.cs-breadcrumb span {
  color: var(--cs-text-muted);
}

/* ── Movement / Footer Section ──────────────────────────────────── */
.cs-movement {
  text-align: center;
  padding: var(--cs-space-5) var(--cs-space-2);
  border-top: 1px solid var(--cs-border);
  margin-top: auto;
}

.cs-movement-title {
  font-family: var(--cs-font-display);
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  font-weight: 700;
  color: var(--cs-gold);
  margin: 0 0 var(--cs-space-1);
}

.cs-movement-text {
  font-size: clamp(0.8125rem, 1.5vw, 0.875rem);
  color: var(--cs-text-secondary);
  margin: 0 auto var(--cs-space-3);
  max-width: 480px;
  line-height: 1.6;
}

.cs-movement-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: center;
}

.cs-movement-link {
  font-size: clamp(0.8125rem, 1.5vw, 0.875rem);
  color: var(--cs-gold);
  font-weight: 600;
  text-decoration: none;
  transition: opacity var(--cs-transition-fast);
  padding: 0.25rem 0;
}

.cs-movement-link:hover {
  opacity: 0.75;
}

/* ── Footer ──────────────────────────────────────────────────────── */
.cs-footer {
  background: var(--cs-dark);
  padding: var(--cs-space-5) var(--cs-space-2);
  text-align: center;
}

.cs-footer-brand {
  font-family: var(--cs-font-display);
  color: var(--cs-gold);
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 0 var(--cs-space-1);
}

.cs-footer-text {
  color: var(--cs-text-muted);
  font-size: 0.8125rem;
  margin: 0;
}

/* ── Pull Quote / Story Block ───────────────────────────────────── */
.cs-pullquote {
  font-family: var(--cs-font-display);
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  font-weight: 700;
  margin: 0 0 var(--cs-space-2);
  color: var(--cs-text);
  line-height: 1.5;
}

/* ── Grid Helpers ───────────────────────────────────────────────── */
.cs-grid-2 {
  display: grid;
  gap: var(--cs-space-3);
  grid-template-columns: 1fr;
}

@media (min-width: 600px) {
  .cs-grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.cs-grid-auto {
  display: grid;
  gap: var(--cs-space-2);
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

/* ── Stack Helpers ──────────────────────────────────────────────── */
.cs-stack { display: flex; flex-direction: column; }
.cs-stack-sm { gap: var(--cs-space-2); }
.cs-stack-md { gap: var(--cs-space-3); }
.cs-stack-lg { gap: var(--cs-space-4); }
.cs-row { display: flex; align-items: center; }
.cs-row-gap { gap: var(--cs-space-2); }
.cs-row-wrap { flex-wrap: wrap; }
.cs-row-center { justify-content: center; }

/* ── Accessible Skeleton / Loading ──────────────────────────────── */
.cs-skeleton {
  background: linear-gradient(90deg, #E4E4E7 25%, #F0F0F2 50%, #E4E4E7 75%);
  background-size: 200% 100%;
  animation: cs-shimmer 1.5s ease-in-out infinite;
  border-radius: var(--cs-radius-sm);
}

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

/* ── Reduced Motion ─────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ── Responsive Breakpoints ─────────────────────────────────────── */
@media (max-width: 480px) {
  .cs-header-inner {
    padding: 0.625rem 1rem;
    gap: 0.5rem;
  }

  .cs-nav-link {
    padding: 0.5rem;
    font-size: 0.8125rem;
  }

  .cs-nav-cta {
    padding: 0 0.875rem;
    font-size: 0.8125rem;
    min-height: 38px;
  }

  .cs-container,
  .cs-container-wide {
    padding: 0 1rem;
  }

  .cs-section {
    padding: var(--cs-space-4) 0;
  }
}

/* ── Print Styles ──────────────────────────────────────────────── */
/* ── Language Switcher ──────────────────────────────────────────── */
.cs-lang-switcher {
  display: inline-flex;
  align-items: center;
  margin-left: 0.5rem;
  position: relative;
}

.cs-lang-select {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius-sm);
  color: var(--cs-text-secondary);
  font-size: 0.75rem;
  font-family: var(--cs-font-body);
  font-weight: 500;
  padding: 0.375rem 1.5rem 0.375rem 0.5rem;
  cursor: pointer;
  transition: border-color var(--cs-transition-fast), color var(--cs-transition-fast);
  max-width: 110px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236B7280' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.375rem center;
  background-size: 10px;
}

.cs-lang-select:hover {
  border-color: var(--cs-gold);
  color: var(--cs-text);
}

.cs-lang-select:focus {
  outline: none;
  border-color: var(--cs-gold);
  box-shadow: 0 0 0 2px rgba(212, 168, 67, 0.15);
}

.cs-lang-select option {
  background: var(--cs-surface);
  color: var(--cs-text);
}

@media (max-width: 600px) {
  .cs-lang-select {
    max-width: 60px;
    padding: 0.25rem 1.25rem 0.25rem 0.375rem;
    font-size: 0.6875rem;
    background-position: right 0.25rem center;
  }
}

/* ── Print Styles ──────────────────────────────────────────────── */
@media print {
  .cs-header { position: static; backdrop-filter: none; }
  .cs-nav, .cs-nav-cta, .cs-lang-switcher { display: none; }
  a { color: var(--cs-text) !important; }
}