/* ============================================================
   Atlas Srpski — Editorial Design System
   Editorial-modernist take on a Serbian language reference.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Spectral:ital,wght@0,200;0,300;0,400;0,500;0,600;0,700;1,200;1,300;1,400;1,500;1,600;1,700&family=JetBrains+Mono:wght@400;500&display=swap');

/* -----------------------------------------------------------
   Tokens
   ----------------------------------------------------------- */

:root, :root[data-theme="light"] {
  --paper:        #F4EEE2;
  --paper-deep:   #ECE3D0;
  --paper-mark:   #DCCFB4;
  --ink:          #1B1612;
  --ink-soft:     #3A2F25;
  --ink-muted:    #6B5D4D;
  --ink-faint:    #A09078;
  --accent:       #A8401C;
  --accent-warm:  #C26B3B;
  --cool:         #1F4940;
  --gold:         #B0892C;
  --hairline:     #CFC2A6;
  --hairline-soft:#E0D5BB;
  --highlight:    rgba(168,64,28,.08);
  --shadow:       rgba(28,22,18,.06);
  --grain-op:     .035;

  --ff-display:   'Spectral', Georgia, serif;
  --ff-body:      'Spectral', Georgia, serif;
  --ff-mono:      'JetBrains Mono', ui-monospace, monospace;

  --pad-x:        clamp(1.25rem, 5vw, 5.5rem);
  --max-w:        1480px;
  --max-prose:    62ch;

  --rad:          2px;
  color-scheme:   light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:        #110D0A;
    --paper-deep:   #1A1410;
    --paper-mark:   #251D17;
    --ink:          #EFE4D0;
    --ink-soft:     #D6C6AA;
    --ink-muted:    #9C8C72;
    --ink-faint:    #6B5C44;
    --accent:       #E27A4F;
    --accent-warm:  #F0A26F;
    --cool:         #71B9AC;
    --gold:         #D9B358;
    --hairline:     #3B2F23;
    --hairline-soft:#2A2218;
    --highlight:    rgba(226,122,79,.10);
    --shadow:       rgba(0,0,0,.4);
    --grain-op:     .06;
    color-scheme:   dark;
  }
}

:root[data-theme="dark"] {
  --paper:        #110D0A;
  --paper-deep:   #1A1410;
  --paper-mark:   #251D17;
  --ink:          #EFE4D0;
  --ink-soft:     #D6C6AA;
  --ink-muted:    #9C8C72;
  --ink-faint:    #6B5C44;
  --accent:       #E27A4F;
  --accent-warm:  #F0A26F;
  --cool:         #71B9AC;
  --gold:         #D9B358;
  --hairline:     #3B2F23;
  --hairline-soft:#2A2218;
  --highlight:    rgba(226,122,79,.10);
  --shadow:       rgba(0,0,0,.4);
  --grain-op:     .06;
  color-scheme:   dark;
}

/* -----------------------------------------------------------
   Reset & base
   ----------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--ff-body);
  font-size: clamp(1.0625rem, .95rem + .35vw, 1.225rem);
  line-height: 1.62;
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: "kern", "liga", "onum";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Grain overlay — gives the paper its tooth */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: var(--grain-op);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220' viewBox='0 0 220 220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .9 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
}
:root[data-theme="dark"] body::before,
:root:not([data-theme="light"]) body::before {
  mix-blend-mode: screen;
}

::selection { background: var(--accent); color: var(--paper); }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }

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

h1, h2, h3, h4, h5 {
  font-family: var(--ff-display);
  font-weight: 350;
  letter-spacing: -.02em;
  line-height: 1.05;
  margin: 0;
  color: var(--ink);
}

p { margin: 0 0 1.15em; }

hr.rule {
  border: 0; height: 1px; margin: 0;
  background: var(--hairline);
}

/* -----------------------------------------------------------
   Layout primitives
   ----------------------------------------------------------- */

.shell {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-inline: var(--pad-x);
}

.bleed { width: 100%; }

section { position: relative; }

/* -----------------------------------------------------------
   Top navigation
   ----------------------------------------------------------- */

.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--paper) 88%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--hairline-soft);
}
.nav-inner {
  display: flex; align-items: center; gap: 1.5rem;
  padding-block: 1.1rem;
  position: relative;
}
.nav-collapse { display: contents; }
.nav-toggle { display: none; }
.brand {
  display: inline-flex; align-items: baseline; gap: .55rem;
  font-family: var(--ff-display);
  font-weight: 400; font-size: 1.18rem;
  letter-spacing: -.01em;
  font-feature-settings: "ss01";
}
.brand .mono { font-family: var(--ff-mono); font-size: .68em; color: var(--ink-muted); letter-spacing: .12em; text-transform: uppercase; }
.brand-mark {
  font-family: var(--ff-display);
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
}
.nav-links {
  display: flex; gap: 1.5rem; margin-left: auto;
  font-family: var(--ff-body);
  font-size: .92rem;
  color: var(--ink-soft);
}
.nav-links a { position: relative; padding-block: .25rem; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s cubic-bezier(.2,.6,.2,1);
}
.nav-links a:hover::after { transform: scaleX(1); }

.nav-controls {
  display: inline-flex; align-items: center; gap: .25rem;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 3px;
}
.chip {
  font-family: var(--ff-mono);
  font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  padding: .42rem .8rem;
  border-radius: 999px;
  color: var(--ink-muted);
  transition: background .25s, color .25s;
}
.chip[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.chip:hover { color: var(--ink); }
.chip[aria-pressed="true"]:hover { color: var(--paper); }

.theme-btn {
  width: 38px; height: 38px;
  display: inline-grid; place-items: center;
  border-radius: 50%;
  border: 1px solid var(--hairline);
  color: var(--ink-soft);
  transition: background .25s, color .25s, transform .25s;
}
.theme-btn:hover { background: var(--paper-deep); color: var(--ink); }
.theme-btn svg { width: 18px; height: 18px; }
.theme-btn .moon { display: none; }
:root[data-theme="dark"] .theme-btn .sun,
:root:not([data-theme="light"]) .theme-btn .sun { display: none; }
:root[data-theme="dark"] .theme-btn .moon,
:root:not([data-theme="light"]) .theme-btn .moon { display: block; }

@media (max-width: 720px) {
  .brand .mono { display: none; }

  .nav-toggle {
    display: inline-flex;
    flex: 0 0 40px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    width: 40px; height: 40px;
    border: 1px solid var(--hairline);
    border-radius: 50%;
    color: var(--ink-soft);
    transition: background .25s, color .25s;
  }
  .nav-toggle:hover { background: var(--paper-deep); color: var(--ink); }
  .nav-toggle .bar {
    display: block;
    width: 16px; height: 1.4px;
    background: currentColor;
    border-radius: 2px;
    transition: transform .28s cubic-bezier(.2,.7,.2,1), opacity .2s;
  }
  .nav-toggle .bar + .bar { margin-top: 4px; }
  .nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(5.4px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-5.4px) rotate(-45deg); }

  .nav-collapse {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    position: absolute;
    top: 100%; left: 0; right: 0;
    padding: 1.4rem var(--pad-x) 1.6rem;
    background: color-mix(in oklab, var(--paper) 96%, transparent);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border-bottom: 1px solid var(--hairline);
    box-shadow: 0 10px 24px var(--shadow);
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity .25s ease, transform .25s ease;
  }
  .nav-collapse[data-open="true"] {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .nav-collapse .nav-links {
    display: flex;
    flex-direction: column;
    gap: .9rem;
    margin: 0;
    font-size: 1.05rem;
    color: var(--ink);
  }
  .nav-collapse .nav-links a { padding-block: .15rem; }
}

/* -----------------------------------------------------------
   Hero
   ----------------------------------------------------------- */

.hero {
  position: relative;
  padding-block: clamp(3rem, 8vw, 7rem) clamp(2.5rem, 6vw, 5rem);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: end;
}
@media (min-width: 960px) {
  .hero-grid { grid-template-columns: 1.4fr 1fr; }
}

.eyebrow {
  font-family: var(--ff-mono);
  font-size: .76rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: inline-flex; align-items: center; gap: .8rem;
  margin-bottom: 1.6rem;
}
.eyebrow::before {
  content: ""; display: inline-block; width: 28px; height: 1px;
  background: var(--accent);
}

.display {
  font-family: var(--ff-display);
  font-weight: 300;
  font-size: clamp(3rem, 9.5vw, 8rem);
  line-height: .94;
  letter-spacing: -.035em;
}
.display em {
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
}
.display .small {
  display: block;
  font-size: .42em;
  letter-spacing: -.02em;
  font-weight: 350;
  color: var(--ink-soft);
  margin-top: .35em;
}

.hero-meta {
  display: flex; flex-direction: column; gap: 1.2rem;
  padding-bottom: .35rem;
}
.lede {
  font-family: var(--ff-body);
  font-size: clamp(1.1rem, .95rem + .55vw, 1.4rem);
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 36ch;
  font-style: italic;
}
.hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: .25rem;
  border-top: 1px solid var(--hairline);
  padding-top: 1.4rem;
  margin-top: .5rem;
}
.hero-stats > div { display: flex; flex-direction: column; gap: .15rem; }
.hero-stats .num {
  font-family: var(--ff-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-feature-settings: "onum" 0, "lnum";
  color: var(--accent);
  font-weight: 400;
}
.hero-stats .label {
  font-family: var(--ff-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* Massive decorative Cyrillic */
.glyph-bg {
  position: absolute;
  font-family: var(--ff-display);
  font-style: italic;
  font-weight: 200;
  color: var(--ink);
  opacity: .045;
  user-select: none;
  pointer-events: none;
  line-height: .8;
  letter-spacing: -.08em;
}
:root[data-theme="dark"] .glyph-bg,
:root:not([data-theme="light"]) .glyph-bg { opacity: .07; }

.glyph-bg.tl { top: -3vw; left: -1vw; font-size: min(48vw, 600px); }
.glyph-bg.br { bottom: -8vw; right: -2vw; font-size: min(38vw, 480px); transform: rotate(8deg); }

/* -----------------------------------------------------------
   Section heading
   ----------------------------------------------------------- */

.section-head {
  display: grid; grid-template-columns: auto 1fr auto; gap: 1.5rem;
  align-items: end;
  padding-bottom: 1.8rem;
  border-bottom: 1px solid var(--hairline);
  margin-bottom: 2.5rem;
}
.section-head .num {
  font-family: var(--ff-mono);
  font-size: .82rem;
  color: var(--accent);
  letter-spacing: .12em;
}
.section-head h2 {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 350;
  letter-spacing: -.02em;
}
.section-head h2 em { font-style: italic; color: var(--ink-soft); font-weight: 300; }
.section-head .meta {
  font-family: var(--ff-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  white-space: nowrap;
}
@media (max-width: 720px) {
  .section-head { grid-template-columns: 1fr; gap: .8rem; }
  .section-head .meta { display: none; }
}

/* -----------------------------------------------------------
   Chart index (landing)
   ----------------------------------------------------------- */

.charts {
  padding-block: clamp(3rem, 7vw, 6rem);
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 0;
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}

.card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 2.2rem clamp(1.2rem, 2.5vw, 2.4rem) 2rem;
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  background: var(--paper);
  transition: background .35s, color .35s;
  min-height: 280px;
  overflow: hidden;
  isolation: isolate;
}
.card .num {
  font-family: var(--ff-mono);
  font-size: .74rem;
  color: var(--ink-muted);
  letter-spacing: .14em;
}
.card h3 {
  font-family: var(--ff-display);
  font-weight: 350;
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  letter-spacing: -.018em;
  margin: .8rem 0 .35rem;
}
.card h3 em { font-style: italic; color: var(--accent); font-weight: 300; }
.card .desc {
  font-family: var(--ff-body);
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.55;
  max-width: 38ch;
}
.card .arrow {
  margin-top: auto;
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--ff-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink);
  padding-top: 1.8rem;
}
.card .arrow svg {
  width: 24px; height: 12px;
  transition: transform .4s cubic-bezier(.2,.7,.2,1);
}
.card:hover .arrow svg { transform: translateX(8px); }

/* Card decoration: oversized Cyrillic glyph */
.card .glyph {
  position: absolute;
  bottom: -2rem; right: -1rem;
  font-family: var(--ff-display);
  font-style: italic;
  font-weight: 200;
  font-size: 10rem;
  line-height: .8;
  color: var(--ink);
  opacity: .055;
  pointer-events: none;
  z-index: -1;
  transition: transform .8s cubic-bezier(.2,.7,.2,1), opacity .35s;
}
.card:hover .glyph { transform: rotate(-6deg) scale(1.08); opacity: .09; }
:root[data-theme="dark"] .card:hover .glyph,
:root:not([data-theme="light"]) .card:hover .glyph { opacity: .14; }

.card:hover { background: var(--paper-deep); }
.card.coming-soon { opacity: .58; cursor: not-allowed; }
.card.coming-soon .arrow { color: var(--ink-muted); }

.tag {
  position: absolute; top: 1.4rem; right: 1.4rem;
  font-family: var(--ff-mono);
  font-size: .62rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  border: 1px solid var(--hairline);
  padding: .25rem .55rem;
  border-radius: 999px;
}

/* -----------------------------------------------------------
   About / notes block
   ----------------------------------------------------------- */

.about {
  padding-block: clamp(3rem, 7vw, 6rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 920px) {
  .about { grid-template-columns: .9fr 1.4fr; gap: 5rem; }
}
.about-title {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 300;
  letter-spacing: -.025em;
  line-height: 1.02;
}
.about-title em { font-style: italic; color: var(--accent); }
.about-body {
  font-size: 1.1rem;
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 60ch;
}
.about-body p + p { margin-top: 1.1em; }
.about-body strong { color: var(--ink); font-weight: 500; }

/* Pull-quote variant */
.pull {
  font-family: var(--ff-display);
  font-style: italic;
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  font-weight: 300;
  color: var(--ink);
  line-height: 1.35;
  letter-spacing: -.01em;
  border-left: 2px solid var(--accent);
  padding: .5rem 0 .5rem 1.4rem;
  margin: 2rem 0;
}

/* -----------------------------------------------------------
   Footer
   ----------------------------------------------------------- */

.foot {
  padding-block: 3rem 4rem;
  border-top: 1px solid var(--hairline);
  font-family: var(--ff-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: space-between;
}
.foot a:hover { color: var(--accent); }

/* -----------------------------------------------------------
   Chart pages — shared
   ----------------------------------------------------------- */

.chart-head {
  padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(2rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--hairline);
  display: grid; grid-template-columns: 1fr; gap: 1.5rem;
  position: relative;
  overflow: hidden;
}
@media (min-width: 920px) {
  .chart-head { grid-template-columns: 1.5fr 1fr; align-items: end; gap: 4rem; }
}
.chart-head .back {
  font-family: var(--ff-mono); font-size: .74rem;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-muted);
  display: inline-flex; align-items: center; gap: .5rem;
  margin-bottom: 1.5rem;
}
.chart-head .back:hover { color: var(--accent); }
.chart-head h1 {
  font-family: var(--ff-display);
  font-size: clamp(2.6rem, 7vw, 5.5rem);
  font-weight: 300;
  letter-spacing: -.03em;
  line-height: 1;
}
.chart-head h1 em { font-style: italic; color: var(--accent); font-weight: 300; }
.chart-head .subtitle {
  font-family: var(--ff-mono);
  font-size: .82rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-top: 1.2rem;
}
.chart-head .intro {
  font-family: var(--ff-body);
  font-style: italic;
  font-size: clamp(1.05rem, .9rem + .5vw, 1.3rem);
  color: var(--ink-soft);
  line-height: 1.55;
  max-width: 42ch;
}

/* -----------------------------------------------------------
   Alphabet grid
   ----------------------------------------------------------- */

.alph-section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.alph-toolbar {
  display: flex; flex-wrap: wrap; gap: 1rem;
  align-items: center; justify-content: space-between;
  padding-bottom: 2rem;
}
.alph-legend {
  display: flex; gap: 1.4rem; flex-wrap: wrap;
  font-family: var(--ff-mono);
  font-size: .7rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-muted);
}
.alph-legend .dot {
  display: inline-block; width: 9px; height: 9px;
  border-radius: 50%; vertical-align: middle;
  margin-right: .55rem;
}
.alph-legend .dot.unique { background: var(--accent); }
.alph-legend .dot.shared { background: var(--cool); }
.alph-legend .dot.diff { background: var(--gold); }

.alph-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}

.letter {
  position: relative;
  padding: 1.3rem 1.15rem 1.2rem;
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  display: flex; flex-direction: column;
  gap: .3rem;
  min-height: 200px;
  background: var(--paper);
  transition: background .25s;
  overflow: hidden;
}
.letter:hover { background: var(--paper-deep); }

.letter .order {
  font-family: var(--ff-mono);
  font-size: .68rem; color: var(--ink-faint); letter-spacing: .14em;
}
.letter .glyphs {
  display: flex; align-items: baseline; gap: .45rem;
  font-family: var(--ff-display);
  font-weight: 300;
  font-size: clamp(2rem, 2.6vw, 2.6rem);
  line-height: 1;
  letter-spacing: -.025em;
  white-space: nowrap;
}
.letter .cyr { color: var(--ink); }
.letter .sep { color: var(--ink-faint); font-size: .55em; padding-bottom: .3em; }
.letter .lat { color: var(--accent); }

.letter .ipa {
  font-family: var(--ff-mono);
  font-size: .8rem;
  color: var(--ink-muted);
  letter-spacing: .04em;
  margin-top: .3rem;
}

.letter .example {
  margin-top: auto;
  padding-top: .8rem;
  border-top: 1px dashed var(--hairline);
  font-family: var(--ff-body);
  font-size: .98rem;
  line-height: 1.4;
  color: var(--ink-soft);
}
.letter .example .word { font-weight: 500; color: var(--ink); display: inline-flex; align-items: baseline; gap: .35rem; flex-wrap: wrap; }
.letter .example .word-cyr { color: var(--ink); }
.letter .example .word-sep { color: var(--ink-faint); }
.letter .example .word-lat { color: var(--accent); font-style: normal; }
.letter .example .tr { font-style: italic; color: var(--ink-muted); display: block; font-size: .85rem; margin-top: .15rem; }

.letter[data-kind="unique"]::after,
.letter[data-kind="shared"]::after,
.letter[data-kind="diff"]::after {
  content: "";
  position: absolute; top: 1.2rem; right: 1.2rem;
  width: 8px; height: 8px; border-radius: 50%;
}
.letter[data-kind="unique"]::after { background: var(--accent); }
.letter[data-kind="shared"]::after { background: var(--cool); }
.letter[data-kind="diff"]::after { background: var(--gold); }

/* -----------------------------------------------------------
   Cases (declension)
   ----------------------------------------------------------- */

.cases-section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.case-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--hairline);
}

.case {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: clamp(2rem, 4vw, 3.2rem) 0;
  border-bottom: 1px solid var(--hairline);
}
@media (min-width: 980px) {
  .case { grid-template-columns: minmax(280px, 24%) 1fr; gap: 4rem; }
}

.case-head .order {
  font-family: var(--ff-mono);
  font-size: .76rem;
  letter-spacing: .14em;
  color: var(--accent);
  display: block;
  margin-bottom: .8rem;
}
.case-head h3 {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  letter-spacing: -.025em;
  line-height: .98;
}
.case-head h3 em { font-style: italic; color: var(--ink-soft); display: block; font-size: .55em; margin-top: .35em; letter-spacing: -.01em; }
.case-head .q {
  font-family: var(--ff-body);
  font-style: italic;
  color: var(--ink-soft);
  font-size: 1.05rem;
  margin-top: 1rem;
  line-height: 1.45;
  max-width: 28ch;
}
.case-head .q strong { font-style: normal; font-weight: 500; color: var(--accent); }

.case-body { display: grid; grid-template-columns: 1fr; gap: 2rem; }

.endings {
  border-top: 1px solid var(--hairline-soft);
  border-bottom: 1px solid var(--hairline-soft);
}
.endings table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--ff-body);
  font-size: 1rem;
}
.endings caption {
  text-align: left;
  font-family: var(--ff-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: .8rem 0 1rem;
}
.endings th, .endings td {
  text-align: left;
  padding: .7rem 1rem .7rem 0;
  border-bottom: 1px dashed var(--hairline-soft);
  vertical-align: top;
}
.endings th {
  font-family: var(--ff-mono);
  font-size: .7rem;
  font-weight: 400;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.endings td {
  font-family: var(--ff-display);
  font-size: 1.25rem;
  font-weight: 350;
  color: var(--ink);
}
.endings td .end {
  color: var(--accent);
  font-style: italic;
}
.endings tr:last-child td { border-bottom: 0; }

.examples {
  display: grid;
  grid-template-columns: 1fr;
  gap: .85rem;
}
.ex {
  display: grid;
  grid-template-columns: 1fr;
  gap: .15rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--hairline-soft);
}
.ex:last-child { border-bottom: 0; }
.ex .sr {
  font-family: var(--ff-display);
  font-size: clamp(1.1rem, 1.4vw, 1.4rem);
  font-weight: 350;
  color: var(--ink);
  line-height: 1.35;
}
.ex .sr mark {
  background: var(--highlight);
  color: var(--accent);
  font-style: italic;
  padding: 0 .15em;
}
.ex .tr {
  font-family: var(--ff-body);
  font-style: italic;
  color: var(--ink-muted);
  font-size: .95rem;
}

.preps {
  display: flex; flex-wrap: wrap; gap: .4rem;
  margin-top: .5rem;
}
.preps .label {
  font-family: var(--ff-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding-top: .5rem; margin-right: .3rem;
}
.prep {
  font-family: var(--ff-display);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--accent);
  padding: .35rem .65rem;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--paper);
}

/* Case nav strip */
.case-nav {
  position: sticky;
  top: 68px;
  z-index: 20;
  background: color-mix(in oklab, var(--paper) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline);
  padding-block: .9rem;
  margin-bottom: 1rem;
}
.case-nav-inner {
  display: flex; gap: .4rem; flex-wrap: wrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.case-nav-inner::-webkit-scrollbar { display: none; }
.case-nav a {
  font-family: var(--ff-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: .45rem .8rem;
  border: 1px solid var(--hairline-soft);
  border-radius: 999px;
  white-space: nowrap;
  transition: color .25s, border-color .25s, background .25s;
}
.case-nav a:hover { color: var(--ink); border-color: var(--hairline); }
.case-nav a .n { color: var(--accent); margin-right: .5em; }

/* -----------------------------------------------------------
   Reveal on scroll
   ----------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* -----------------------------------------------------------
   Utilities
   ----------------------------------------------------------- */

.kbd {
  font-family: var(--ff-mono);
  font-size: .8em;
  padding: .1em .4em;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: var(--paper-deep);
  color: var(--ink-soft);
}
.note {
  font-family: var(--ff-body);
  font-style: italic;
  color: var(--ink-muted);
  font-size: .95rem;
}
.mono { font-family: var(--ff-mono); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}