/* ==========================================================================
   OMAR KAMAL HOSNEY — "THE MERIDIAN MONOGRAPH" DESIGN SYSTEM
   Static GitHub Pages Native · Dual Theme (Obsidian Atelier / Archival Paper)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Inter+Tight:wght@600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

@view-transition {
  navigation: auto;
}

:root,
[data-theme="dark"] {
  --bg-0: #07090e;
  --bg-1: #0b0f17;
  --bg-2: #101622;
  --bg-3: #161e2e;
  --surface: rgba(16, 22, 34, 0.72);
  --surface-2: rgba(22, 30, 46, 0.88);
  --surface-solid: #0f1420;
  --surface-elevated: #151d2d;

  --ink: #f4f3ee;
  --ink-2: #cfd5e2;
  --muted: #949eb2;
  --dim: #5e687d;

  --line: rgba(226, 232, 240, 0.085);
  --line-strong: rgba(226, 232, 240, 0.18);
  --line-subtle: rgba(226, 232, 240, 0.045);

  --gold: #e8a838;
  --gold-hi: #f6c467;
  --gold-soft: rgba(232, 168, 56, 0.13);
  --cobalt: #3b82f6;
  --cobalt-hi: #68a3ff;
  --cobalt-soft: rgba(59, 130, 246, 0.14);
  --crimson: #e5484d;
  --crimson-soft: rgba(229, 72, 77, 0.14);
  --emerald: #10b981;
  --emerald-soft: rgba(16, 185, 129, 0.14);
  --violet: #8b5cf6;
  --violet-soft: rgba(139, 92, 246, 0.14);
  --teal: #14b8a6;
  --teal-soft: rgba(20, 184, 166, 0.14);

  --nav-bg: rgba(7, 9, 14, 0.78);
  --grid-color: rgba(226, 232, 240, 0.032);
  --spot-color: rgba(232, 168, 56, 0.09);
  --spot-border: rgba(246, 196, 103, 0.38);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.32);
  --shadow-md: 0 14px 36px -12px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 28px 70px -20px rgba(0, 0, 0, 0.72);
  --shadow-book: 0 32px 60px -18px rgba(0, 0, 0, 0.82), 0 8px 20px -6px rgba(0, 0, 0, 0.55);

  --grain-opacity: 0.032;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg-0: #f7f5ee;
  --bg-1: #f0ede3;
  --bg-2: #e7e3d6;
  --bg-3: #ded9c9;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-2: rgba(255, 255, 255, 0.96);
  --surface-solid: #ffffff;
  --surface-elevated: #fcfbf7;

  --ink: #0d1017;
  --ink-2: #282e3b;
  --muted: #555e70;
  --dim: #7b8496;

  --line: rgba(13, 16, 23, 0.10);
  --line-strong: rgba(13, 16, 23, 0.22);
  --line-subtle: rgba(13, 16, 23, 0.05);

  --gold: #b77406;
  --gold-hi: #945d04;
  --gold-soft: rgba(183, 116, 6, 0.10);
  --cobalt: #0b46c4;
  --cobalt-hi: #1d5ae0;
  --cobalt-soft: rgba(11, 70, 196, 0.09);
  --crimson: #c92a2a;
  --crimson-soft: rgba(201, 42, 42, 0.09);
  --emerald: #087f5b;
  --emerald-soft: rgba(8, 127, 91, 0.09);
  --violet: #6741d9;
  --violet-soft: rgba(103, 65, 217, 0.09);
  --teal: #0c8599;
  --teal-soft: rgba(12, 133, 153, 0.09);

  --nav-bg: rgba(247, 245, 238, 0.86);
  --grid-color: rgba(13, 16, 23, 0.038);
  --spot-color: rgba(11, 70, 196, 0.055);
  --spot-border: rgba(11, 70, 196, 0.32);

  --shadow-sm: 0 2px 8px rgba(13, 16, 23, 0.05);
  --shadow-md: 0 14px 34px -12px rgba(13, 16, 23, 0.11);
  --shadow-lg: 0 28px 64px -20px rgba(13, 16, 23, 0.16);
  --shadow-book: 0 28px 52px -16px rgba(13, 16, 23, 0.28), 0 8px 18px -6px rgba(13, 16, 23, 0.14);

  --grain-opacity: 0.025;
  color-scheme: light;
}

:root {
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Inter Tight', 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --max-w: 1240px;
  --ease-out: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-spring: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 88px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-0);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
  min-height: 100vh;
  position: relative;
  transition: background-color 0.35s var(--ease-out), color 0.35s var(--ease-out);
}

img, svg, video {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

button, input {
  font: inherit;
  color: inherit;
}

::selection {
  background: var(--gold);
  color: #07090e;
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: -9999px;
  top: 12px;
  z-index: 999;
  padding: 10px 18px;
  background: var(--gold);
  color: #07090e;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-decoration: none;
}
.skip-link:focus {
  left: 16px;
}

/* ---------- Atmospheric Background Architecture ---------- */
.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  background:
    radial-gradient(1100px 620px at 14% -6%, var(--gold-soft), transparent 62%),
    radial-gradient(960px 580px at 88% 4%, var(--cobalt-soft), transparent 60%),
    radial-gradient(880px 620px at 50% 105%, var(--violet-soft), transparent 65%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 52%, var(--bg-0) 100%);
}

.ambient-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 88% 72% at 50% 18%, #000 28%, transparent 82%);
  -webkit-mask-image: radial-gradient(ellipse 88% 72% at 50% 18%, #000 28%, transparent 82%);
}

.ambient-grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

/* ---------- Top Scroll Progress Bar ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2.5px;
  z-index: 200;
  transform-origin: 0 50%;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--gold) 0%, var(--cobalt) 55%, var(--emerald) 100%);
  pointer-events: none;
}

/* ---------- Layout Container ---------- */
.shell {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

/* ---------- Sticky Precision Masthead ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: var(--nav-bg);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 16px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
  color: var(--ink);
  flex-shrink: 0;
}

/* Swiss 4-quadrant architectural monogram */
.ok-mark {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--surface-elevated);
  border: 1px solid var(--line-strong);
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  padding: 5px;
  gap: 3px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease-spring), border-color 0.3s;
}
.brand-link:hover .ok-mark {
  transform: rotate(-4deg) scale(1.04);
  border-color: var(--gold);
}
.ok-mark span:nth-child(1) { background: var(--cobalt); border-radius: 2px; }
.ok-mark span:nth-child(2) { background: var(--gold); border-radius: 50%; }
.ok-mark span:nth-child(3) { background: var(--ink); border-radius: 2px; }
.ok-mark span:nth-child(4) { background: var(--crimson); border-radius: 2px; }

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.98rem;
  letter-spacing: -0.02em;
}
.brand-role {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border-radius: 999px;
  background: var(--line-subtle);
  border: 1px solid var(--line);
}

.nav-center a {
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--muted);
  padding: 7px 15px;
  border-radius: 999px;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}

.nav-center a:hover {
  color: var(--ink);
  background: var(--line);
}

.nav-center a.active {
  color: var(--ink);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line-strong);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.cmdk-trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.cmdk-trigger:hover {
  color: var(--ink);
  border-color: var(--line-strong);
  background: var(--surface-2);
}
.cmdk-trigger kbd {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--line);
  color: var(--ink-2);
  border: 1px solid var(--line);
}

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
  text-decoration: none;
}
.icon-btn:hover {
  color: var(--ink);
  border-color: var(--line-strong);
  transform: translateY(-1px);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg-0);
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.25s var(--ease-spring), opacity 0.2s;
}
.nav-cta:hover {
  transform: translateY(-1.5px);
  opacity: 0.92;
}

.mobile-toggle {
  display: none;
}

/* ---------- Mobile Navigation Drawer ---------- */
.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 250;
  background: rgba(5, 7, 12, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s var(--ease-out);
}
.mobile-drawer.open {
  opacity: 1;
  pointer-events: auto;
}
.mobile-panel {
  position: absolute;
  top: 12px;
  right: 12px;
  left: 12px;
  background: var(--surface-solid);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-lg);
  transform: translateY(-14px) scale(0.98);
  transition: transform 0.3s var(--ease-spring);
}
.mobile-drawer.open .mobile-panel {
  transform: translateY(0) scale(1);
}
.mobile-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.mobile-links {
  display: grid;
  gap: 6px;
}
.mobile-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink);
  background: var(--line-subtle);
  border: 1px solid transparent;
}
.mobile-links a.active,
.mobile-links a:hover {
  border-color: var(--gold);
  background: var(--gold-soft);
}
.mobile-links a span.sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--muted);
}

/* ---------- Typography Helpers ---------- */
.eyebrow-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  padding: 6px 13px;
  border-radius: 999px;
  background: var(--gold-soft);
  border: 1px solid rgba(232, 168, 56, 0.26);
}
.eyebrow-tag .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--emerald);
  box-shadow: 0 0 0 4px var(--emerald-soft);
  animation: pulseDot 2.4s ease-in-out infinite;
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.sec-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}
.sec-kicker::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--gold);
}

.display-xl {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.55rem, 5.4vw, 4.55rem);
  line-height: 1.01;
  letter-spacing: -0.038em;
  color: var(--ink);
}

.display-lg {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.95rem, 3.8vw, 3.05rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.serif-em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--gold-hi);
  padding-right: 0.04em;
}
[data-theme="light"] .serif-em {
  color: var(--cobalt);
}

.lede {
  font-size: clamp(1.04rem, 1.35vw, 1.2rem);
  color: var(--muted);
  line-height: 1.7;
  max-width: 62ch;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease-spring), box-shadow 0.25s var(--ease-spring), background 0.2s, border-color 0.2s, color 0.2s;
  white-space: nowrap;
}
.btn:hover {
  transform: translateY(-2px);
}
.btn .arr {
  transition: transform 0.25s var(--ease-spring);
}
.btn:hover .arr {
  transform: translateX(4px);
}

.btn-gold {
  background: var(--gold);
  color: #090b10;
  box-shadow: 0 12px 30px -10px rgba(232, 168, 56, 0.55);
}
[data-theme="light"] .btn-gold {
  background: var(--ink);
  color: var(--bg-0);
  box-shadow: 0 12px 28px -10px rgba(13, 16, 23, 0.35);
}
.btn-gold:hover {
  background: var(--gold-hi);
}
[data-theme="light"] .btn-gold:hover {
  background: var(--cobalt);
  color: #fff;
}

.btn-cobalt {
  background: var(--cobalt);
  color: #ffffff;
  box-shadow: 0 12px 30px -10px rgba(59, 130, 246, 0.52);
}
.btn-cobalt:hover {
  background: var(--cobalt-hi);
}

.btn-surface {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line-strong);
  backdrop-filter: blur(10px);
}
.btn-surface:hover {
  background: var(--surface-2);
  border-color: var(--gold);
}

.btn-sm {
  padding: 9px 16px;
  font-size: 0.83rem;
}

/* ---------- Spotlight Card Architecture ---------- */
.spot-card {
  position: relative;
  background: var(--surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform 0.35s var(--ease-spring), border-color 0.35s, box-shadow 0.35s, background 0.35s;
}

.spot-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(560px circle at var(--mx, 50%) var(--my, 0%), var(--spot-color), transparent 45%);
  opacity: 0;
  transition: opacity 0.35s;
  pointer-events: none;
  z-index: 0;
}

.spot-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(380px circle at var(--mx, 50%) var(--my, 0%), var(--spot-border), transparent 50%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s;
  pointer-events: none;
  z-index: 2;
}

.spot-card:hover::before,
.spot-card:hover::after {
  opacity: 1;
}

.spot-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}

.spot-card > * {
  position: relative;
  z-index: 1;
}

/* ---------- Physical 3D Book Renderer ---------- */
.book-stage {
  perspective: 1300px;
  display: inline-block;
}

.book-3d {
  position: relative;
  display: block;
  transform-style: preserve-3d;
  transform: rotateY(-12deg) rotateX(2.5deg);
  transition: transform 0.55s var(--ease-spring), filter 0.55s var(--ease-spring);
  border-radius: 3px 6px 6px 3px;
  box-shadow: var(--shadow-book);
}

.book-stage:hover .book-3d,
.book-3d:hover {
  transform: rotateY(-2deg) rotateX(0deg) translateY(-6px);
}

.book-3d img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 3px 6px 6px 3px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* Realistic paper block edge on the right */
.book-3d::before {
  content: '';
  position: absolute;
  top: 3px;
  bottom: 3px;
  right: -10px;
  width: 11px;
  background: repeating-linear-gradient(
    90deg,
    #f5f2e9 0px,
    #e2ddd0 1.5px,
    #faf8f2 3px
  );
  transform: rotateY(72deg);
  transform-origin: left center;
  border-radius: 0 2px 2px 0;
  box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.25);
  pointer-events: none;
}

/* Spine crease + specular cover gloss */
.book-3d::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 3px 6px 6px 3px;
  background:
    linear-gradient(90deg,
      rgba(0, 0, 0, 0.34) 0%,
      rgba(255, 255, 255, 0.18) 3.2%,
      rgba(0, 0, 0, 0.16) 5.5%,
      transparent 10%
    ),
    linear-gradient(120deg, rgba(255, 255, 255, 0.16) 0%, transparent 42%);
  pointer-events: none;
}

/* ---------- Section Dividers & Headers ---------- */
.section-block {
  padding: clamp(64px, 8vw, 112px) 0;
  position: relative;
}

.section-divider {
  border-top: 1px solid var(--line);
  position: relative;
}
.section-divider::before,
.section-divider::after {
  content: '+';
  position: absolute;
  top: -10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--dim);
  pointer-events: none;
}
.section-divider::before { left: 0; }
.section-divider::after { right: 0; }

.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: clamp(36px, 5vw, 56px);
  flex-wrap: wrap;
}

/* ---------- Filter Pills & Search Inputs ---------- */
.toolbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s var(--ease-out);
}
.pill-btn:hover {
  color: var(--ink);
  border-color: var(--line-strong);
}
.pill-btn.active {
  color: #090b10;
  background: var(--gold);
  border-color: var(--gold);
}
[data-theme="light"] .pill-btn.active {
  color: #ffffff;
  background: var(--ink);
  border-color: var(--ink);
}
.pill-btn .count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  opacity: 0.78;
}

.search-box {
  position: relative;
  min-width: min(100%, 310px);
  flex: 0 1 360px;
}
.search-box input {
  width: 100%;
  padding: 11px 38px 11px 40px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-size: 0.88rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-box input::placeholder {
  color: var(--dim);
}
.search-box input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-soft);
}
.search-box .s-icon {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 0.85rem;
  pointer-events: none;
}

/* ---------- Badges & Chips ---------- */
.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: var(--line-subtle);
  border: 1px solid var(--line);
  color: var(--muted);
}
.meta-chip.gold { background: var(--gold-soft); color: var(--gold); border-color: rgba(232, 168, 56, 0.28); }
.meta-chip.cobalt { background: var(--cobalt-soft); color: var(--cobalt-hi); border-color: rgba(59, 130, 246, 0.28); }
[data-theme="light"] .meta-chip.cobalt { color: var(--cobalt); }
.meta-chip.emerald { background: var(--emerald-soft); color: var(--emerald); border-color: rgba(16, 185, 129, 0.28); }
.meta-chip.crimson { background: var(--crimson-soft); color: var(--crimson); border-color: rgba(229, 72, 77, 0.28); }
.meta-chip.violet { background: var(--violet-soft); color: var(--violet); border-color: rgba(139, 92, 246, 0.28); }
.meta-chip.teal { background: var(--teal-soft); color: var(--teal); border-color: rgba(20, 184, 166, 0.28); }

/* ---------- Universal Command Palette (⌘K) ---------- */
.cmdk-backdrop {
  position: fixed;
  inset: 0;
  z-index: 400;
  background: rgba(4, 6, 11, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: grid;
  place-items: start center;
  padding: clamp(40px, 10vh, 100px) 16px 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s var(--ease-out);
}
.cmdk-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.cmdk-dialog {
  width: min(100%, 680px);
  background: var(--surface-solid);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(-10px) scale(0.98);
  transition: transform 0.24s var(--ease-spring);
}
.cmdk-backdrop.open .cmdk-dialog {
  transform: translateY(0) scale(1);
}

.cmdk-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}
.cmdk-head i {
  color: var(--gold);
  font-size: 1rem;
}
.cmdk-input {
  flex: 1;
  background: transparent;
  border: none;
  font-size: 1rem;
  color: var(--ink);
  outline: none;
}
.cmdk-input::placeholder {
  color: var(--dim);
}
.cmdk-esc {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 4px 8px;
  border-radius: 6px;
  background: var(--line);
  border: 1px solid var(--line-strong);
  color: var(--muted);
  cursor: pointer;
}

.cmdk-tabs {
  display: flex;
  gap: 6px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
}
.cmdk-tab {
  padding: 4px 11px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
}
.cmdk-tab.active {
  background: var(--gold);
  color: #07090e;
  border-color: var(--gold);
}

.cmdk-results {
  max-height: min(56vh, 420px);
  overflow-y: auto;
  padding: 8px;
}

.cmdk-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--ink);
  transition: background 0.12s;
}
.cmdk-item:hover,
.cmdk-item.selected {
  background: var(--gold-soft);
}
.cmdk-item-main {
  min-width: 0;
  flex: 1;
}
.cmdk-item-title {
  font-weight: 700;
  font-size: 0.92rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cmdk-item-sub {
  font-size: 0.79rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cmdk-item-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--line);
  color: var(--muted);
  flex-shrink: 0;
}

.cmdk-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.71rem;
  color: var(--dim);
  background: var(--line-subtle);
}
.cmdk-foot kbd {
  padding: 1px 5px;
  border-radius: 4px;
  background: var(--line);
  color: var(--muted);
  margin: 0 2px;
}

/* ---------- Architectural Colophon Footer ---------- */
.site-footer {
  margin-top: clamp(64px, 8vw, 110px);
  border-top: 1px solid var(--line);
  background: var(--surface);
  backdrop-filter: blur(12px);
  padding: 64px 0 44px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line);
}

.footer-bio p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 38ch;
  line-height: 1.65;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.footer-col a {
  text-decoration: none;
  font-size: 0.9rem;
  color: var(--muted);
  transition: color 0.2s;
}
.footer-col a:hover {
  color: var(--gold);
}

.footer-bottom {
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.84rem;
  color: var(--dim);
}

.social-row {
  display: flex;
  gap: 10px;
}
.social-row a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--line-subtle);
  border: 1px solid var(--line);
  color: var(--muted);
  text-decoration: none;
  transition: all 0.22s var(--ease-out);
}
.social-row a:hover {
  color: var(--ink);
  border-color: var(--gold);
  background: var(--gold-soft);
  transform: translateY(-2px);
}

/* ---------- Scroll Reveal Choreography ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}
.js .reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive Breakpoints ---------- */
@media (max-width: 980px) {
  .nav-center {
    display: none;
  }
  .cmdk-trigger span.label-txt {
    display: none;
  }
  .nav-cta.hide-sm {
    display: none;
  }
  .mobile-toggle {
    display: inline-grid;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .nav-bar {
    height: 62px;
  }
  .brand-role {
    display: none;
  }
  .cmdk-trigger kbd {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .js .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}