/* NYMERO Design System v1.0
   Single source of truth for colors, typography, spacing, components.
   Include on ALL public pages: <link rel="stylesheet" href="/assets/design-system.css"> */

/* ============================================
   1. CSS VARIABLES
   ============================================ */
:root {
  /* Colors — Light theme */
  --parch: #faf7f2;
  --parch2: #f0ebe2;
  --ink: #1a1612;
  --ink2: #3d3530;
  --ink3: #6a5e50;
  --ink4: #8a7e6a;
  --ink5: #d0c8bc;
  --gold: #c9a84c;
  --gold2: #a68530;
  --gold-text: #8a6d1b; /* WCAG AA 4.5:1 on #faf7f2 */
  --gold3: rgba(201,168,76,0.12);
  --rust: #a0522d;
  --sage: #6b7c5e;

  /* Colors — Dark theme */
  --dark: #111110;
  --dark2: #1a1918;
  --dark3: #1e1d1c;
  --dark4: #282625;
  --light: #f0e8d8;
  --light2: #d4c9b4;
  --light3: #a89e8c;

  /* Typography */
  --serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --sans: 'Karla', 'Segoe UI', Tahoma, sans-serif;

  /* Spacing scale (8px base) */
  --sp-xs: 4px;
  --sp-sm: 8px;
  --sp-md: 16px;
  --sp-lg: 24px;
  --sp-xl: 32px;
  --sp-2xl: 48px;

  /* Border radius */
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 50%;

  /* Shadows */
  --shadow-sm: 0 1px 6px rgba(0,0,0,0.04);
  --shadow: 0 2px 16px rgba(0,0,0,0.05);
  --shadow-lg: 0 6px 24px rgba(0,0,0,0.08);
  --shadow-gold: 0 4px 16px rgba(201,168,76,0.15);

  /* Transitions */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 0.2s;
  --duration: 0.3s;
  --duration-slow: 0.5s;

  /* Layout */
  --max-width: 720px;
  --max-width-narrow: 680px;
}

/* ============================================
   1b. DARK MODE VARIABLE OVERRIDES
   ============================================ */
body:not(.cosmos-light) {
  --ink: #f0e8d8; --ink2: #d4c9b4; --ink3: #b8ad9a; --ink4: #8a7e6a;
  --ink5: rgba(201,168,76,0.2);
  --gold-text: #c9a84c;
  --parch: #1a1918; --parch2: #252220;
  --surface: rgba(38,35,32,0.55); --surface-hover: rgba(48,44,40,0.65);
  --surface-border: rgba(201,168,76,0.2); --surface-border-hover: var(--gold);
  --surface-deep: #1a1918;
  --text-primary: #f0e8d8; --text-secondary: #b8ad9a; --text-muted: #8a7e6a;
  --text-body: #d4c9b4;
  --input-bg: rgba(38,35,32,0.55); --input-border: rgba(201,168,76,0.2);
  --input-color: #f0e8d8; --input-placeholder: #8a7e6a;
  --card-bg: rgba(38,35,32,0.55); --card-border: rgba(201,168,76,0.15);
  --card-shadow: 0 2px 16px rgba(0,0,0,0.3);
  --divider: linear-gradient(90deg,transparent 5%,rgba(201,168,76,0.18) 50%,transparent 95%);
  --overlay-bg: rgba(17,17,16,0.95); --overlay-shadow: 0 20px 60px rgba(0,0,0,0.5);
  --shadow-sm: 0 1px 6px rgba(0,0,0,0.2);
  --shadow: 0 2px 16px rgba(0,0,0,0.3);
  --shadow-lg: 0 6px 24px rgba(0,0,0,0.4);
}

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

html {
  scroll-behavior: smooth;
  background-color: #111110;
  transition: background-color 1s ease;
}
html.cosmos-light { background-color: #ffffff; }

body {
  font-family: var(--sans);
  background: var(--parch);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  transition: background-color 0.8s ease, color 0.8s ease;
}

a { color: var(--gold2); text-decoration: none; transition: color var(--duration-fast); }
a:hover { color: var(--rust); }
body:not(.cosmos-light) a:hover { color: var(--gold); }

/* ============================================
   3. ACCESSIBILITY
   ============================================ */

/* Focus visible for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

button:focus-visible, a:focus-visible, select:focus-visible, input:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  padding: 8px 16px;
  background: var(--ink);
  color: var(--parch);
  font-size: 13px;
  z-index: 10000;
  border-radius: var(--radius-sm);
}
.skip-link:focus { top: 8px; }

/* ============================================
   4. UNIFIED NAVIGATION
   ============================================ */
.site-nav {
  text-align: center;
  padding: max(24px, env(safe-area-inset-top, 24px)) 20px 0;
  position: relative;
  z-index: 10;
}

.site-nav-logo {
  font-family: var(--serif);
  font-size: clamp(26px, 4.5vw, 36px);
  font-weight: 400;
  letter-spacing: clamp(8px, 1.5vw, 14px);
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  display: inline-block;
  line-height: 1.2;
}
.site-nav-logo b {
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold), var(--gold2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: var(--gold);
}

.site-nav-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 12px;
  font-size: 13px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  white-space: nowrap;
  scrollbar-width: none;
  padding: 0 20px;
}
.site-nav-links::-webkit-scrollbar { display: none; }

.site-nav-links a {
  color: var(--ink4);
  text-decoration: none;
  font-weight: 500;
  padding: 4px;
  flex-shrink: 0;
  transition: color var(--duration-fast);
}
.site-nav-links a:hover { color: var(--gold2); }
.site-nav-links a.active {
  color: var(--ink);
  font-weight: 700;
}

/* Quiz mode: hide site nav when quiz is active */
body.quiz-active .site-nav { display: none; }

/* ============================================
   5. UNIFIED FOOTER
   ============================================ */
.site-footer {
  text-align: center;
  padding: 32px 24px;
  font-size: 11px;
  color: var(--ink4);
  border-top: 1px solid var(--ink5);
  max-width: var(--max-width);
  margin: 40px auto 0;
}
.site-footer a {
  color: var(--ink4);
  text-decoration: none;
}
.site-footer a:hover { color: var(--gold2); }

.site-footer-disclaimer {
  font-size: 10px;
  margin-top: 6px;
  line-height: 1.6;
  color: var(--ink4);
}

/* ============================================
   6. TYPOGRAPHY
   ============================================ */
.page-title {
  font-family: var(--serif);
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 300;
  color: var(--ink);
  line-height: 1.25;
}
.page-title--italic { font-style: italic; }

.page-subtitle {
  font-size: 14px;
  color: var(--ink3);
  font-weight: 300;
  margin-top: 8px;
  line-height: 1.6;
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 400;
  font-style: italic;
  color: var(--ink);
  margin: 48px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--ink5);
}
.section-title:first-of-type { border-top: none; padding-top: 0; }

.body-text {
  font-size: 15px;
  color: var(--ink2);
  font-weight: 300;
  line-height: 1.85;
}

/* ============================================
   7. BUTTONS
   ============================================ */

/* Primary — dark background */
.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--ink);
  color: var(--parch);
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: background var(--duration), letter-spacing var(--duration);
}
.btn-primary:hover {
  background: var(--ink2);
  color: var(--parch);
  letter-spacing: 3.5px;
}

/* Gold — gradient background */
.btn-gold {
  display: inline-block;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--gold), var(--gold2));
  color: var(--ink);
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration);
}
.btn-gold:hover {
  color: var(--ink);
  letter-spacing: 3.5px;
  box-shadow: var(--shadow-gold);
}

/* Secondary — outline */
.btn-outline {
  display: inline-block;
  padding: 12px 28px;
  background: transparent;
  color: var(--gold2);
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid var(--gold);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration);
}
.btn-outline:hover {
  background: var(--gold);
  color: var(--ink);
}

/* Form button — full width */
.btn-form {
  width: 100%;
  padding: 16px;
  background: var(--gold);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  font-family: var(--sans);
  cursor: pointer;
  transition: all var(--duration-fast);
  letter-spacing: 0.02em;
}
.btn-form:hover {
  background: var(--gold2);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(201,168,76,0.3);
}

/* ============================================
   8. CARDS
   ============================================ */
.card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
}
.card:hover {
  box-shadow: var(--shadow-lg);
}

.card--bordered {
  background: rgba(201,168,76,0.04);
  border: 1px solid var(--ink5);
  box-shadow: none;
  border-radius: 0;
}
.card--bordered:hover {
  border-color: var(--gold);
  background: rgba(201,168,76,0.08);
}

/* ============================================
   9. CTA BOX (gold gradient)
   ============================================ */
.cta-box {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold2) 100%);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  color: #fff;
  margin: 32px 0;
}
.cta-box h3 {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 400;
  margin-bottom: 8px;
}
.cta-box p {
  font-size: 14px;
  opacity: 0.9;
  margin-bottom: 16px;
}
.cta-box a, .cta-box button {
  display: inline-block;
  padding: 14px 32px;
  background: #fff;
  color: var(--gold2);
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast);
}
.cta-box a:hover, .cta-box button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  color: var(--gold2);
}

/* ============================================
   10. FORMS
   ============================================ */
.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink3);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--ink5);
  border-radius: var(--radius);
  font-size: 16px;
  font-family: var(--sans);
  background: var(--parch);
  color: var(--ink);
  transition: border-color var(--duration-fast);
}
.form-input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201,168,76,0.1);
}
.form-input.invalid {
  border-color: #c0392b;
}

.form-select {
  padding: 10px 12px;
  border: 1.5px solid var(--ink5);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--sans);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
}
.form-select:focus {
  outline: none;
  border-color: var(--gold);
}

.form-error {
  color: #c0392b;
  font-size: 13px;
  margin-top: 6px;
}

/* ============================================
   11. CONTAINER
   ============================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 20px;
}
.container--narrow {
  max-width: var(--max-width-narrow);
}

/* ============================================
   12. RESPONSIVE
   ============================================ */

/* Mobile */
@media (max-width: 480px) {
  .site-nav { padding: 20px 16px 0; }
  .site-nav-links { gap: 12px; font-size: 12px; }
  .site-footer { padding: 24px 16px; font-size: 10px; }
  .container { padding: 20px 16px; }

  .btn-primary { padding: 12px 24px; font-size: 12px; letter-spacing: 2px; }
  .btn-gold { padding: 12px 24px; font-size: 12px; letter-spacing: 2px; }
  .btn-outline { padding: 10px 20px; font-size: 12px; }
  .cta-box { padding: 24px 18px; margin: 24px 0; }
}

/* Tablet */
@media (min-width: 768px) {
  .container { padding: 32px 24px; }
}

/* Desktop */
@media (min-width: 1200px) {
  .container { padding: 32px 24px; }
}

/* ============================================
   13. PARCHMENT TEXTURE (optional bg)
   ============================================ */
.parchment-bg::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg width='200' height='200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.7' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.02'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

/* ============================================
   14. DARK MODE COMPONENT OVERRIDES
   ============================================ */
body:not(.cosmos-light) .card {
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
}
body:not(.cosmos-light) .card--bordered {
  background: rgba(201,168,76,0.04);
  border-color: var(--card-border);
}
body:not(.cosmos-light) .card--bordered:hover {
  background: rgba(201,168,76,0.08);
}
body:not(.cosmos-light) .form-select {
  background: var(--input-bg);
  border-color: var(--input-border);
  color: var(--input-color);
}
body:not(.cosmos-light) .form-input {
  background: var(--input-bg);
  border-color: var(--input-border);
  color: var(--input-color);
}
body:not(.cosmos-light) .cta-box a,
body:not(.cosmos-light) .cta-box button {
  background: #1a1918;
  color: var(--gold);
}
body:not(.cosmos-light) .cta-box a:hover,
body:not(.cosmos-light) .cta-box button:hover {
  color: var(--gold);
  background: #252220;
}
body:not(.cosmos-light) .parchment-bg::before {
  opacity: 0.3;
  mix-blend-mode: overlay;
}
body:not(.cosmos-light) .btn-primary {
  background: var(--gold);
  color: #111110;
}
body:not(.cosmos-light) .btn-primary:hover {
  background: var(--gold2);
  color: #111110;
}

/* ─── THEME TOGGLE FAB ─── */
.theme-fab {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(201,168,76,0.3);
  background: rgba(26,25,24,0.85);
  backdrop-filter: blur(8px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.theme-fab:hover {
  border-color: var(--gold);
  box-shadow: 0 4px 20px rgba(201,168,76,0.2);
  transform: scale(1.05);
}
.cosmos-light .theme-fab {
  background: rgba(255,255,255,0.85);
  border-color: var(--ink5);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.theme-fab svg {
  width: 18px;
  height: 18px;
}
.theme-icon-sun { display: none; color: var(--gold); }
.theme-icon-moon { display: block; color: var(--gold); }
.cosmos-light .theme-icon-sun { display: block; color: var(--gold2); }
.cosmos-light .theme-icon-moon { display: none; }