/* ═══════════════════════════════════════════════════════════════════
   ICONIA — Design Tokens  v4 (onyx & marble, gold as the vein)
   Editorial luxury: serif statements, flat gold, atmospheric ground,
   light/dark section rhythm. Michroma reserved for the mark only.
   ═══════════════════════════════════════════════════════════════════ */

:root {
  /* ── Onyx (dark ground) — one step deeper, cool ── */
  --ground:        #08080A;
  --surface:       #0E0E11;
  --raised:        #141419;
  --hairline:      #202027;

  /* ── Marble (light ground) ── */
  --marble:        #EDEAE2;
  --marble-deep:   #E2DED3;
  --marble-ink:    #17140E;
  --marble-muted:  #6E675A;
  --marble-line:   #D6D0C2;

  /* ── Ink on onyx ── */
  --ink:           #EFEEE9;
  --ink-muted:     #8D8D93;
  --ink-faint:     #55555C;

  /* ── Gold ── */
  --gold:          #C9A961;
  --gold-sheen:    #F2DDA0;
  --gold-hot:      #FFF3CE;
  --gold-deep:     #8F7639;
  --ember:         #E8B54A;
  --gold-ink:      #14100A;

  /* ── Light ── */
  --glow-soft:  0 0 60px rgba(232,181,74,0.09);
  --glow-edge:  0 0 26px rgba(232,181,74,0.20);
  --vein-lit:   linear-gradient(90deg, transparent 0%, var(--ember) 50%, transparent 100%);

  /* ── Glass system — blur scale, light borders, colored shadows ── */
  --blur-sm:  6px;      /* chips, captions */
  --blur-md:  12px;     /* cards at rest */
  --blur-xl:  20px;     /* primary surfaces, nav */
  --blur-3xl: 40px;     /* hero-scale panes */
  --glass-border:        rgba(255,255,255,0.10);
  --glass-border-strong: rgba(255,255,255,0.16);
  --shadow-gold: 0 24px 70px rgba(201,169,97,0.06);
  --shadow-drop: 0 18px 50px rgba(0,0,0,0.5);

  /* ── Type ── */
  --font-mark:    'Michroma', sans-serif;           /* the ICONIA instrument — mark only */
  --font-display: 'Fraunces', Georgia, serif;       /* statements — editorial, sentence case */
  --font-body:    'Manrope', system-ui, sans-serif;
  --font-mono:    ui-monospace, 'Cascadia Code', 'JetBrains Mono', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1.0625rem;
  --text-lg:   1.25rem;
  --text-xl:   1.5rem;
  --text-2xl:  1.9rem;
  --text-3xl:  2.6rem;
  --display-sm: clamp(2.4rem, 5vw, 4.2rem);
  --display-lg: clamp(3rem, 7.5vw, 6.8rem);

  --tracking-vast: 0.42em;

  /* ── Motion ── */
  --swap: 0.2s ease;
  --swap-glow: 0.25s ease;

  /* ── Geometry — quiet rectangles, not pills ── */
  --radius: 10px;
  --radius-lg: 16px;
  --radius-pill: 100px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6.5rem;
  --space-7: 10rem;

  --content-max: 1280px;
}

/* ═══ Base ═══ */
* { margin: 0; padding: 0; box-sizing: border-box; }

/* mobile safety: decorative/absolute glows must never create a sideways scroll,
   and keep media fluid. Fixed nav/drawer are unaffected (viewport-positioned). */
html, body { overflow-x: hidden; max-width: 100%; }
img, video { max-width: 100%; height: auto; }

html { scroll-behavior: smooth; }

body {
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--gold); color: var(--gold-ink); }

/* ═══ Type voices ═══ */

/* the brand instrument — caps, spaced, metallic. Used ONLY for ICONIA. */
.mark {
  font-family: var(--font-mark);
  text-transform: uppercase;
  letter-spacing: var(--tracking-vast);
}

/* editorial statements — serif, sentence case, monumental.
   Fraunces quirk axes LOCKED OFF (wonk/soft) + high optical size:
   renders Canela-class, not zine-class. */
.display {
  font-family: var(--font-display);
  font-weight: 380;
  font-variation-settings: "opsz" 144, "SOFT" 0, "WONK" 0;
  line-height: 1.04;
  letter-spacing: -0.022em;
}
.display em {
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 144, "SOFT" 0, "WONK" 0;
}

/* metallic sheen through glyphs */
.metal {
  background: linear-gradient(172deg,
    #FFFDF4 0%, #F2DDA0 24%, #C9A961 52%, #8F7639 78%, #E0C588 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 14px rgba(232,181,74,0.18));
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: var(--tracking-vast);
  color: var(--gold);
  display: inline-flex; align-items: center; gap: 0.6rem;
}
.eyebrow::before {
  content: '';
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--ember);
  box-shadow: 0 0 8px rgba(232,181,74,0.7);
}

.muted { color: var(--ink-muted); }

.hud {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ═══ Veins ═══ */
.vein {
  border: 0; height: 1px;
  background: var(--vein-lit);
  opacity: 0.7;
}
.vein-neutral { border: 0; border-top: 1px solid var(--hairline); }

/* ═══ Buttons — flat, quiet, expensive ═══ */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  padding: 0.95rem 1.9rem;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color var(--swap), color var(--swap),
              border-color var(--swap), box-shadow var(--swap-glow);
}

/* the key — gold light behind dark glass, never gold paint */
.btn-gold {
  background: rgba(201,169,97,0.06);
  color: var(--gold-sheen);
  border-color: rgba(201,169,97,0.4);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}
.btn-gold:hover {
  background: rgba(201,169,97,0.15);
  border-color: var(--gold-sheen);
  color: var(--gold-hot);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.10),
    0 0 30px rgba(201,169,97,0.16);
}
.btn-gold:active {
  background: rgba(201,169,97,0.24);
  box-shadow: none;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--hairline);
}
.btn-ghost:hover {
  border-color: var(--gold-deep);
  color: var(--gold-sheen);
  background: rgba(255,253,244,0.045);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}


/* on marble */
.btn-dark {
  background: var(--marble-ink);
  color: var(--marble);
}
.btn-dark:hover { background: #2A251C; }

.link-vein {
  color: var(--ink);
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
}
.link-vein::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--ember);
  transition: width var(--swap);
}
.link-vein:hover::after { width: 100%; }
.link-vein:hover { color: var(--gold-sheen); transition: color var(--swap); }

/* ═══ Cards — dark glass. Hover = the glass catches light. ═══ */
.card {
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--raised) 82%, transparent) 0%,
    color-mix(in srgb, var(--surface) 88%, transparent) 100%);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  position: relative;
  overflow: hidden;
  box-shadow:
    var(--shadow-drop),
    var(--shadow-gold),
    inset 0 1px 0 rgba(255,255,255,0.05);
  transition: border-color var(--swap), box-shadow var(--swap-glow),
              transform var(--swap), backdrop-filter var(--swap);
}
.card:hover {
  border-color: var(--glass-border-strong);
  backdrop-filter: blur(var(--blur-xl));
  -webkit-backdrop-filter: blur(var(--blur-xl));
  box-shadow:
    var(--shadow-drop),
    0 28px 90px rgba(201,169,97,0.16),
    var(--glow-soft),
    inset 0 1px 0 rgba(255,255,255,0.12),
    inset 0 0 40px rgba(255,255,255,0.02);
  transform: translateY(-2px);
}

/* specular sheen — a band of light crosses the glass on hover */
.card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg,
    transparent 42%, rgba(255,253,244,0.055) 50%, transparent 58%);
  background-size: 260% 100%;
  background-position: 120% 0;
  pointer-events: none;
  transition: background-position 0.7s ease;
}
.card:hover::after { background-position: -60% 0; }

/* engraved gold tick — the plaque detail, dark-glass edition */
.card-lit::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 34px; height: 2px;
  background: var(--gold);
  opacity: 0.75;
  z-index: 1;
}

/* ═══ Marble sections ═══ */
.marble-section {
  background:
    radial-gradient(ellipse 90% 60% at 20% 0%, rgba(255,255,255,0.5) 0%, transparent 60%),
    var(--marble);
  color: var(--marble-ink);
}
.marble-section .muted,
.marble-section .label { color: var(--marble-muted); }
.marble-section .eyebrow { color: var(--gold-deep); }
.marble-section .vein-neutral { border-top-color: var(--marble-line); }
/* gold emphasis must darken on light marble or it disappears */
.marble-section .display em,
.marble-section blockquote em,
.marble-section h2 em,
.marble-section .qa-a strong,
.marble-section em { color: var(--gold-deep); }

.marble-card {
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--marble-line);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-3) var(--space-3);
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7), 0 1px 2px rgba(23,20,14,0.04);
  transition: border-color var(--swap), box-shadow var(--swap), transform var(--swap), background-color var(--swap);
}
/* engraved gold vein along the plaque's top */
.marble-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 34px; height: 2px;
  background: var(--gold-deep);
  opacity: 0.85;
}
.marble-card:hover {
  border-color: var(--gold-deep);
  background: rgba(255,255,255,0.62);
  box-shadow: 0 16px 48px rgba(23,20,14,0.10), inset 0 1px 0 rgba(255,255,255,0.9);
  transform: translateY(-2px);
}
.marble-card::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(105deg,
    transparent 42%, rgba(255,255,255,0.35) 50%, transparent 58%);
  background-size: 260% 100%;
  background-position: 120% 0;
  pointer-events: none;
  transition: background-position 0.7s ease;
}
.marble-card:hover::after { background-position: -60% 0; }

/* ═══ Grain — kills digital flatness. Applied to dark sections. ═══ */
.grain { position: relative; }
.grain::after {
  content: '';
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

/* ═══ Layout ═══ */
.wrap {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-muted);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-pill);
  padding: 0.3rem 0.95rem;
  transition: color var(--swap), border-color var(--swap);
}
.tag:hover { color: var(--gold-sheen); border-color: var(--gold-deep); }

/* ═══ Scroll reveal ═══ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}