/* ============================================================
   Reckon — shared design system
   Editorial / instrument aesthetic, multi-theme + dark mode.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600;700&display=swap');

:root{
  /* ---- theme tokens (overridden per palette by JS) ---- */
  --bg:            #F5F6F1;
  --bg-grid:       #E7E8E1;
  --ink:           #14181F;
  --ink-soft:      #585E6B;
  --ink-faint:     #9199A3;
  --card:          #FFFFFF;
  --line:          #DCDFD5;
  --accent:        #1F6F78;
  --accent-deep:   #123E44;
  --accent-tint:   #E4EFEF;
  --accent-ink:    #123E44;
  --brass:         #C08A3E;
  --brass-tint:    #F7EEE0;
  --success:       #3F8F5F;
  --error:         #C1503F;

  /* per-tool identity colors stay constant across themes */
  --grad-calc: linear-gradient(135deg, #4285F4 0%, #34A8FF 100%);
  --grad-sci:  linear-gradient(135deg, #7C4DFF 0%, #536DFE 100%);
  --grad-pct:  linear-gradient(135deg, #34A853 0%, #0BA360 100%);
  --grad-bmi:  linear-gradient(135deg, #EA4335 0%, #FF8A65 100%);
  --grad-conv: linear-gradient(135deg, #F9AB00 0%, #00ACC1 100%);
  --grad-home: linear-gradient(135deg, #57646F 0%, #16202A 100%);
  --grad-abacus: linear-gradient(135deg, #8D6E4B 0%, #D7A86E 100%);
  --grad-darts:  linear-gradient(135deg, #C62828 0%, #FF6F61 100%);
  --grad-patio:  linear-gradient(135deg, #6D6157 0%, #ABA095 100%);
  --grad-ring:   linear-gradient(135deg, #A9781A 0%, #F2C94C 100%);
  --grad-circle: linear-gradient(135deg, #5C6BC0 0%, #26C6DA 100%);

  --font-display: 'Fraunces', serif;
  --font-body:    'Inter', -apple-system, sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  --radius: 10px;
  --radius-lg: 16px;

  color-scheme: light;
}

:root[data-theme="dark"]{ color-scheme: dark; }

*{ box-sizing:border-box; }

html{ background:var(--bg); }

body{
  margin:0;
  background:
    linear-gradient(var(--bg-grid) 1px, transparent 1px) 0 0 / 100% 28px,
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px) 0 0 / 28px 100%,
    var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  transition:background .25s ease, color .25s ease;
}

a{ color:inherit; }

.wrap{ max-width:900px; margin:0 auto; padding:0 24px 90px; }

/* ---------- top bar ---------- */
.topbar{
  display:flex; justify-content:space-between; align-items:center;
  padding:26px 24px; max-width:900px; margin:0 auto; gap:16px; flex-wrap:wrap;
}
.wordmark{
  font-family:var(--font-display); font-weight:600; font-size:20px;
  letter-spacing:-0.01em; display:flex; align-items:center; gap:8px;
  text-decoration:none; color:var(--ink);
}
.wordmark .logo-mark{
  width:26px; height:26px; flex:none;
}

/* ---------- theme switcher ---------- */
.theme-row{
  display:flex; align-items:center; gap:9px;
}
.theme-label{
  font-family:var(--font-mono); font-size:10.5px; text-transform:uppercase;
  color:var(--ink-soft); letter-spacing:0.06em; margin-right:2px; white-space:nowrap;
}
.theme-swatch{
  width:22px; height:22px; border-radius:50%; border:2px solid transparent;
  cursor:pointer; padding:0; flex:none; transition:border-color .15s, transform .1s;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.08);
}
.theme-swatch:hover{ transform:translateY(-1px); }
.theme-swatch.active{ border-color:var(--ink); }

/* ---------- tool tiles (square-block nav) ---------- */
.tiles-shell{ margin-top:22px; margin-bottom:30px; }
.tool-tiles{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(96px, 1fr));
  gap:10px;
}
.tile{
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:9px; text-align:center; text-decoration:none;
  padding:16px 8px 13px;
  border:1px solid var(--line); border-radius:12px;
  background:var(--card); color:var(--ink-soft);
  transition:border-color .15s ease, background .18s ease, transform .12s ease, box-shadow .18s ease;
}
.tile:hover{ border-color:var(--accent); transform:translateY(-2px); color:var(--ink); }
.tile:active{ transform:translateY(0) scale(0.98); }
.tile .tile-icon{
  width:34px; height:34px; border-radius:50%;
  display:flex; align-items:center; justify-content:center; flex:none;
  background:var(--bg-grid); color:var(--ink-soft); font-size:13.5px;
  transition:background .18s ease, color .18s ease;
}
.tile .tile-label{
  font-family:var(--font-mono); font-size:11px; font-weight:600;
  letter-spacing:0.04em; text-transform:uppercase;
}
.tile.active{
  color:#fff; border-color:transparent;
  box-shadow:0 10px 22px -10px rgba(20,30,40,0.45);
}
.tile.active .tile-icon{ background:rgba(255,255,255,0.24); color:#fff; }

.tile-home.active{ background:var(--grad-home); }
.tile-calc.active{ background:var(--grad-calc); }
.tile-sci.active{  background:var(--grad-sci); }
.tile-pct.active{  background:var(--grad-pct); }
.tile-bmi.active{  background:var(--grad-bmi); }
.tile-conv.active{ background:var(--grad-conv); }
.tile-abacus.active{ background:var(--grad-abacus); }
.tile-darts.active{  background:var(--grad-darts); }
.tile-patio.active{  background:var(--grad-patio); }
.tile-ring.active{   background:var(--grad-ring); }
.tile-circle.active{ background:var(--grad-circle); }

.tile-home:hover .tile-icon{ background:var(--grad-home); color:#fff; }
.tile-calc:hover .tile-icon{ background:var(--grad-calc); color:#fff; }
.tile-sci:hover  .tile-icon{ background:var(--grad-sci); color:#fff; }
.tile-pct:hover  .tile-icon{ background:var(--grad-pct); color:#fff; }
.tile-bmi:hover  .tile-icon{ background:var(--grad-bmi); color:#fff; }
.tile-conv:hover .tile-icon{ background:var(--grad-conv); color:#fff; }
.tile-abacus:hover .tile-icon{ background:var(--grad-abacus); color:#fff; }
.tile-darts:hover  .tile-icon{ background:var(--grad-darts); color:#fff; }
.tile-patio:hover  .tile-icon{ background:var(--grad-patio); color:#fff; }
.tile-ring:hover   .tile-icon{ background:var(--grad-ring); color:#fff; }
.tile-circle:hover .tile-icon{ background:var(--grad-circle); color:#fff; }

/* ---------- fullscreen control ---------- */
.tool-toolbar{
  display:flex; justify-content:flex-end; margin-bottom:12px;
}
.fs-btn{
  display:flex; align-items:center; gap:7px;
  font-family:var(--font-mono); font-size:12px; color:var(--ink-soft);
  background:var(--bg); border:1px solid var(--line); border-radius:999px;
  padding:8px 14px; cursor:pointer; transition:border-color .15s, color .15s;
}
.fs-btn:hover{ border-color:var(--accent); color:var(--accent-ink); }
.fs-btn svg{ width:14px; height:14px; }

.fs-surface.is-fullscreen{
  position:fixed; inset:0; z-index:999; max-width:none !important;
  background:var(--bg);
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size:28px 28px;
  border-radius:0; margin:0; overflow-y:auto;
  display:flex; flex-direction:column; justify-content:center; align-items:center;
  padding:60px 24px 40px;
}
.fs-surface.is-fullscreen .display-main{ font-size:54px; }
.fs-surface.is-fullscreen > *:not(.tool-toolbar){ width:100%; max-width:460px; }
.fs-surface.is-fullscreen .tool-toolbar{ position:absolute; top:20px; right:24px; margin:0; max-width:none; width:auto; }

/* ---------- hero / intro ---------- */
.eyebrow{
  font-family:var(--font-mono); font-size:12px; letter-spacing:0.08em;
  text-transform:uppercase; color:var(--accent-ink); margin:0 0 14px;
  display:flex; align-items:center; gap:8px;
}
.eyebrow::before{ content:''; width:16px; height:1px; background:var(--brass); display:inline-block; }
.headline{
  font-family:var(--font-display); font-weight:600; font-size:38px;
  line-height:1.14; margin:0 0 10px; letter-spacing:-0.01em;
}
.sub{ font-size:15px; color:var(--ink-soft); max-width:520px; margin:0; line-height:1.55; }

/* ---------- hero (with faded tool icon, right side) ---------- */
.hero{ position:relative; }
.hero-icon{
  position:absolute; top:-6px; right:-4px;
  font-size:92px; line-height:1; color:var(--ink);
  opacity:0.07; pointer-events:none; z-index:0;
  transform:rotate(-6deg);
}
:root[data-theme="dark"] .hero-icon{ opacity:0.10; }
.hero > .eyebrow, .hero > .headline, .hero > .sub{ position:relative; z-index:1; }
@media (max-width:600px){ .hero-icon{ font-size:64px; } }

/* ---------- readout strip (signature element) ---------- */
.readout{
  margin-top:32px;
  background:var(--accent-deep);
  border-radius:var(--radius-lg);
  padding:18px 24px;
  display:flex; align-items:center; gap:14px;
  overflow:hidden;
}
.readout-led{
  width:8px; height:8px; border-radius:50%; background:#5FD68A;
  box-shadow:0 0 8px 1px #5FD68A; flex:none;
  animation:blink 2.2s ease-in-out infinite;
}
@keyframes blink{ 0%,100%{opacity:1;} 50%{opacity:0.35;} }
.readout-text{
  font-family:var(--font-mono); font-size:14.5px; color:#DCEFEC;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.readout-text .eq{ color:#8FC7C2; }
.readout-text .res{ color:#F3D9A6; font-weight:600; }

/* ---------- tool grid (hub) ---------- */
.tool-grid{
  display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:36px;
}
@media (max-width:600px){ .tool-grid{ grid-template-columns:1fr; } }

.tool-card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:22px; text-decoration:none; color:var(--ink);
  display:flex; flex-direction:column; gap:10px;
  transition:border-color .15s, transform .15s, background .25s;
}
.tool-card:hover{ border-color:var(--accent); transform:translateY(-2px); }
.tool-card .card-icon{
  width:38px; height:38px; border-radius:11px;
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-size:15px; margin-bottom:2px;
}
.tool-card .tag{
  font-family:var(--font-mono); font-size:11px; letter-spacing:0.05em; text-transform:uppercase;
  color:var(--brass); background:var(--brass-tint); padding:3px 9px; border-radius:999px;
  align-self:flex-start;
}
.tool-card h3{ font-family:var(--font-display); font-size:19px; margin:0; font-weight:600; }
.tool-card p{ font-size:13.5px; color:var(--ink-soft); margin:0; line-height:1.5; }
.tool-card .go{
  font-family:var(--font-mono); font-size:12px; color:var(--accent-ink);
  margin-top:auto; padding-top:6px;
}

/* ---------- panel / instrument shell ---------- */
.panel, .panel-group{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:26px; margin-top:32px; transition:background .25s ease, border-color .25s ease;
}
.panel-group .panel{ margin-top:0; border:none; border-top:1px solid var(--line); border-radius:0; padding:24px 0; }
.panel-group .panel:first-of-type{ border-top:none; padding-top:4px; }
.panel-head{ margin-bottom:20px; }
.panel-head h1{
  font-family:var(--font-display); font-size:26px; font-weight:600; margin:0 0 6px;
  letter-spacing:-0.01em;
}
.panel-head p{ font-size:14px; color:var(--ink-soft); margin:0; max-width:480px; line-height:1.55; }

/* ---------- digital display ---------- */
.display{
  background:var(--accent-deep);
  border-radius:var(--radius);
  padding:22px 20px;
  text-align:right;
  margin-bottom:18px;
}
.display-sub{
  font-family:var(--font-mono); font-size:12.5px; color:#8FC7C2;
  min-height:16px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}
.display-main{
  font-family:var(--font-mono); font-size:38px; font-weight:600; color:#FFFFFF;
  font-variant-numeric:tabular-nums; overflow:hidden; text-overflow:ellipsis;
  white-space:nowrap; letter-spacing:0.01em;
}

/* ---------- calculator keypad ---------- */
.keypad{
  display:grid; grid-template-columns:repeat(4,1fr); gap:9px;
}
.keypad.sci{ grid-template-columns:repeat(5,1fr); }
.key{
  font-family:var(--font-mono); font-size:16px; font-weight:500;
  border:1px solid var(--line); background:var(--bg); color:var(--ink);
  border-radius:8px; padding:15px 0; cursor:pointer;
  transition:background .1s, border-color .1s, transform .05s;
}
.key:active{ transform:scale(0.96); }
.key:hover{ border-color:var(--accent); }
.key.op{ background:var(--accent-tint); color:var(--accent-ink); font-weight:600; }
.key.fn{ background:var(--bg-grid); color:var(--ink-soft); font-size:13.5px; }
.key.eq{ background:var(--brass); color:#fff; border-color:var(--brass); }
.key.eq:hover{ background:var(--accent-deep); border-color:var(--accent-deep); }
.key.wide{ grid-column:span 2; }

/* ---------- form-style tools (BMI, percentage, converter) ---------- */
.field-row{ display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); gap:14px; margin-bottom:14px; }
@media (max-width:520px){ .field-row{ grid-template-columns:minmax(0,1fr); } }
.field{ display:flex; flex-direction:column; gap:6px; min-width:0; }
.field label{
  font-family:var(--font-mono); font-size:11.5px; letter-spacing:0.04em; text-transform:uppercase;
  color:var(--ink-soft);
}
.field input, .field select{
  width:100%; min-width:0;
  font-family:var(--font-mono); font-size:16px; padding:12px 13px;
  border:1px solid var(--line); border-radius:8px; background:var(--bg); color:var(--ink);
  outline:none; transition:border-color .15s;
}
.field input:focus, .field select:focus{ border-color:var(--accent); }
.unit-toggle{ display:flex; gap:8px; margin-bottom:18px; flex-wrap:wrap; }
.unit-toggle button{
  flex:1; font-family:var(--font-mono); font-size:12px; padding:9px 8px;
  border:1px solid var(--line); background:var(--bg); color:var(--ink-soft);
  border-radius:8px; cursor:pointer; min-width:88px;
  overflow-wrap:break-word; word-break:break-word; text-align:center; line-height:1.3;
}
.unit-toggle button.active{ border-color:var(--accent); background:var(--accent-tint); color:var(--accent-ink); }

.result-box{
  margin-top:20px; padding:20px; border-radius:var(--radius);
  background:var(--accent-tint); border:1px solid var(--accent);
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px;
}
.result-box .r-label{ font-family:var(--font-mono); font-size:12px; color:var(--accent-ink); text-transform:uppercase; letter-spacing:0.04em; }
.result-box .r-value{ font-family:var(--font-mono); font-size:26px; font-weight:700; color:var(--accent-ink); }
.result-note{ font-size:13px; color:var(--ink-soft); margin-top:12px; line-height:1.5; }

.swap-btn{
  display:flex; align-items:center; justify-content:center; gap:6px;
  font-family:var(--font-mono); font-size:12px; color:var(--ink-soft);
  background:none; border:1px dashed var(--line); border-radius:8px;
  padding:8px 0; width:100%; cursor:pointer; margin-bottom:14px;
}
.swap-btn:hover{ border-color:var(--accent); color:var(--accent-ink); }

.related-row{
  margin-top:16px; padding-top:14px; border-top:1px solid var(--line);
  font-family:var(--font-mono); font-size:12.5px; color:var(--ink-soft);
  display:flex; flex-wrap:wrap; align-items:center; gap:2px;
}
.related-row a{ color:var(--accent-ink); text-decoration:none; }
.related-row a:hover{ text-decoration:underline; }
.related-row .sep{ color:var(--ink-faint); margin:0 6px; }

/* ---------- homepage section dividers + compact quick-link grid ---------- */
.section-head{ margin:48px 0 18px; }
.section-head h2{
  font-family:var(--font-display); font-size:21px; font-weight:600; margin:0 0 4px;
  color:var(--ink); letter-spacing:-0.01em;
}
.section-head p{ font-size:13.5px; color:var(--ink-soft); margin:0; }

.quick-grid{
  display:grid; grid-template-columns:repeat(auto-fill, minmax(160px, 1fr)); gap:10px;
}
.quick-link{
  display:flex; align-items:center; gap:9px;
  padding:12px 14px; background:var(--card); border:1px solid var(--line); border-radius:10px;
  text-decoration:none; color:var(--ink); font-family:var(--font-mono); font-size:12.5px;
  transition:border-color .15s, transform .1s;
}
.quick-link:hover{ border-color:var(--accent); transform:translateY(-1px); }
.quick-link i{ color:var(--accent-ink); width:14px; text-align:center; flex:none; }
.panel-title{
  font-family:var(--font-mono); font-size:11px; letter-spacing:0.06em; text-transform:uppercase;
  color:var(--ink-faint); margin:0 0 14px;
}
.ref-table{ width:100%; border-collapse:collapse; font-family:var(--font-mono); font-size:13px; }
.ref-table th, .ref-table td{ padding:9px 10px; text-align:left; border-bottom:1px solid var(--line); }
.ref-table th{
  color:var(--ink-soft); font-weight:600; text-transform:uppercase; font-size:10.5px; letter-spacing:0.05em;
}
.ref-table td{ color:var(--ink); }
.ref-table td.hl{ color:var(--accent-ink); font-weight:600; }
.ref-table tr:last-child td{ border-bottom:none; }
.formula-box{
  background:var(--accent-tint); border-radius:var(--radius); padding:16px 18px;
  font-size:13.5px; color:var(--accent-ink); line-height:1.6; margin-top:4px;
}

/* ---------- about / info card row (mirrors "selected country / where you are") ---------- */
.info-row{
  display:grid; grid-template-columns:1.2fr 1fr; gap:16px; margin-top:18px;
}
@media (max-width:640px){ .info-row{ grid-template-columns:1fr; } }
.info-card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:22px 24px;
}
.info-card .info-eyebrow{
  font-family:var(--font-mono); font-size:11px; letter-spacing:0.06em; text-transform:uppercase;
  color:var(--ink-faint); margin:0 0 10px;
}
.info-card p{ font-size:13.5px; color:var(--ink-soft); line-height:1.6; margin:0 0 8px; }
.info-card p:last-child{ margin-bottom:0; }
.info-card ul{ margin:6px 0 0; padding-left:18px; font-size:13.5px; color:var(--ink-soft); line-height:1.7; }
.info-card.accent{
  background:var(--accent-deep); border-color:var(--accent-deep); color:#fff;
}
.info-card.accent .info-eyebrow{ color:rgba(255,255,255,0.55); }
.info-card.accent .info-big{
  font-family:var(--font-display); font-size:30px; font-weight:600; margin:0 0 8px; color:#fff;
}
.info-card.accent p{ color:rgba(255,255,255,0.78); }

/* ---------- stat grid (ring size, circle tools) ---------- */
.stat-grid{
  display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:20px;
}
@media (max-width:480px){ .stat-grid{ grid-template-columns:1fr; } }
.stat-box{
  padding:16px 18px; border-radius:var(--radius); background:var(--accent-tint);
  border:1px solid var(--accent);
}
.stat-box .stat-label{
  display:block; font-family:var(--font-mono); font-size:11px; text-transform:uppercase;
  letter-spacing:0.04em; color:var(--accent-ink); margin-bottom:4px;
}
.stat-box .stat-value{
  font-family:var(--font-mono); font-size:21px; font-weight:700; color:var(--accent-ink);
}

/* ---------- darts: score log ---------- */
.score-board{
  display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-bottom:18px;
}
@media (max-width:480px){ .score-board{ grid-template-columns:1fr; } }
.player-card{
  border:1px solid var(--line); border-radius:var(--radius); padding:16px 18px;
  transition:border-color .15s ease;
}
.player-card.turn{ border-color:var(--accent); background:var(--accent-tint); }
.player-card .p-name{
  font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:0.04em;
  color:var(--ink-soft); margin:0 0 4px;
}
.player-card .p-score{
  font-family:var(--font-mono); font-size:34px; font-weight:700; color:var(--ink);
}
.checkout-box{
  margin-top:6px; padding:16px 18px; border-radius:var(--radius);
  background:var(--accent-deep); color:#fff;
}
.checkout-box .co-label{
  font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:0.04em;
  color:rgba(255,255,255,0.6); margin:0 0 6px;
}
.checkout-box .co-value{ font-family:var(--font-mono); font-size:19px; font-weight:600; }
.turn-log{ list-style:none; margin:14px 0 0; padding:0; max-height:160px; overflow-y:auto; }
.turn-log li{
  display:flex; justify-content:space-between; font-family:var(--font-mono); font-size:12.5px;
  color:var(--ink-soft); padding:7px 0; border-bottom:1px solid var(--line);
}
.turn-log li:last-child{ border-bottom:none; }

/* ---------- abacus ---------- */
.abacus-frame{
  background:var(--accent-deep); border-radius:var(--radius); padding:22px 16px 16px;
  overflow-x:auto;
}
.abacus-rods{ display:flex; gap:4px; justify-content:center; min-width:max-content; }
.rod{ display:flex; flex-direction:column; align-items:center; width:40px; position:relative; }
.rod-track{
  position:relative; width:6px; background:rgba(255,255,255,0.18); border-radius:3px;
  height:260px;
}
.rod .bar{
  position:absolute; left:-17px; right:-17px; top:64px; height:2px; background:var(--brass);
}
.bead{
  position:absolute; left:50%; transform:translateX(-50%);
  width:34px; height:22px; border-radius:50%;
  background:linear-gradient(180deg, #E8C078 0%, #B9832F 100%);
  border:1px solid rgba(0,0,0,0.25); cursor:pointer;
  transition:top .16s ease;
  box-shadow:0 2px 4px rgba(0,0,0,0.3);
}
.bead.heaven{ background:linear-gradient(180deg, #F3D9A6 0%, #C9982F 100%); }
.rod-place{
  margin-top:8px; font-family:var(--font-mono); font-size:11px; color:rgba(255,255,255,0.5);
  text-transform:uppercase;
}

/* ---------- footer ---------- */
footer{
  border-top:1px solid var(--line); padding-top:20px; margin-top:44px;
  font-size:12px; color:var(--ink-faint); font-family:var(--font-mono);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px;
}
footer .legal-links{ flex-basis:100%; margin-top:2px; }
footer .legal-links a{ color:var(--ink-faint); text-decoration:none; }
footer .legal-links a:hover{ color:var(--accent-ink); text-decoration:underline; }
footer .legal-links .sep{ margin:0 6px; }

/* ---------- long-form legal / info page content ---------- */
.legal-content{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:30px 32px; margin-top:28px;
}
.legal-content h2{
  font-family:var(--font-display); font-size:19px; font-weight:600;
  margin:28px 0 10px; color:var(--ink);
}
.legal-content h2:first-child{ margin-top:0; }
.legal-content p{ font-size:14px; color:var(--ink-soft); line-height:1.7; margin:0 0 12px; }
.legal-content ul{ font-size:14px; color:var(--ink-soft); line-height:1.8; margin:0 0 12px; padding-left:20px; }
.legal-content a{ color:var(--accent-ink); }
.legal-content .updated{
  font-family:var(--font-mono); font-size:12px; color:var(--ink-faint);
  text-transform:uppercase; letter-spacing:0.05em; margin-bottom:24px;
}

@media (max-width:600px){
  .headline{ font-size:29px; }
  .topbar{ justify-content:center; text-align:center; }
}

/* ---------- accessibility: skip link ---------- */
.skip-link{
  position:absolute; left:-9999px; top:0; z-index:2000;
  background:var(--accent-deep); color:#fff; padding:12px 18px; border-radius:0 0 8px 0;
  font-family:var(--font-mono); font-size:13px; text-decoration:none;
}
.skip-link:focus{ left:0; }

/* ---------- accessibility: visible keyboard focus ---------- */
:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; }
.tile:focus-visible, .pill:focus-visible, .key:focus-visible, .theme-swatch:focus-visible,
.fs-btn:focus-visible, .unit-toggle button:focus-visible, .tool-card:focus-visible,
.swap-btn:focus-visible{
  outline:2px solid var(--accent); outline-offset:2px;
}
#mainContent:focus{ outline:none; }

/* ---------- accessibility: respect reduced-motion preference ---------- */
@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;
  }
}