/* Equate site. Same materials as the app: a warm grey calculator body,
   a graphite faceplate, light keys, one marigold "answer" key. */

:root {
  --body: #DAD7D0;
  --raised: #E9E7E2;
  --plate: #2E3033;
  --slot: #232527;
  --key: #EDEBE6;
  --key-edge: #A1A09C;
  --key-ink: #26282A;
  --gold: #EBA417;
  --gold-edge: #A06F0F;
  --gold-ink: #2A2210;
  --sage: #86AE80;
  --signal: #D4483A;
  --ink: #26282A;
  --soft: #5E5F5B;
  --glyph: #9C9E9A;
  --rule: rgba(38, 40, 42, 0.14);
  --num: "Barlow Semi Condensed", "Bahnschrift", "Segoe UI", sans-serif;
  --text: "Barlow", "Segoe UI", system-ui, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --body: #2A2C2F;
    --raised: #34373B;
    --plate: #1F2123;
    --slot: #17181A;
    --key: #CFCCC5;
    --key-edge: #8E8C86;
    --gold: #DDA02E;
    --ink: #E6E3DC;
    --soft: #A3A49F;
    --glyph: #85878A;
    --rule: rgba(230, 227, 220, 0.14);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --body: #2A2C2F; --raised: #34373B; --plate: #1F2123; --slot: #17181A;
  --key: #CFCCC5; --key-edge: #8E8C86; --gold: #DDA02E; --ink: #E6E3DC;
  --soft: #A3A49F; --glyph: #85878A; --rule: rgba(230, 227, 220, 0.14);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--body);
  color: var(--ink);
  font: 18px/1.55 var(--text);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; border-radius: 6px; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }

/* ---------- Top bar ---------- */
.bar { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-key {
  width: 36px; height: 36px; border-radius: 9px; background: var(--gold);
  box-shadow: 0 3px 0 var(--gold-edge); display: grid; place-items: center;
}
.brand-key i { display: block; width: 16px; height: 3px; border-radius: 2px; background: var(--gold-ink);
  box-shadow: 0 6px 0 var(--gold-ink); transform: translateY(-3px); }
.brand b { font: 700 26px/1 var(--num); letter-spacing: -0.01em; }
.bar nav { display: flex; gap: 22px; font-size: 16px; }
.bar nav a { text-decoration: none; color: var(--soft); }
.bar nav a:hover { color: var(--ink); }

/* ---------- Keys (shared by puzzle, buttons) ---------- */
.keycap {
  --face: var(--key); --edge: var(--key-edge); --kink: var(--key-ink);
  appearance: none; border: 0; margin: 0; cursor: pointer;
  background: var(--face); color: var(--kink);
  border-radius: 12px; box-shadow: 0 5px 0 var(--edge);
  font: 600 1em/1 var(--num);
  transition: transform 70ms ease, box-shadow 70ms ease;
}
.keycap:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--edge); }
.keycap.gold { --face: var(--gold); --edge: var(--gold-edge); --kink: var(--gold-ink); }

.play-button {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 18px 26px; font-size: 21px; font-weight: 700; text-decoration: none;
}
.play-button svg { width: 22px; height: 22px; flex: none; }

/* ---------- Hero ---------- */
.hero { display: grid; gap: 32px; padding: 8px 0 72px; align-items: center; }
@media (max-width: 899px) {
  .hero h1 { margin-bottom: 14px; }
  .hero p.lede { font-size: 19px; margin-bottom: 24px; }
}
@media (min-width: 900px) { .hero { grid-template-columns: 1fr 1.05fr; gap: 64px; padding: 48px 0 96px; } }

.hero h1 {
  font: 700 clamp(46px, 7.4vw, 84px)/0.98 var(--num);
  letter-spacing: -0.02em; margin: 0 0 22px; max-width: 11ch;
}
.hero p.lede { font-size: 21px; color: var(--soft); margin: 0 0 32px; max-width: 32ch; }
.hero .sub { margin-top: 18px; font-size: 15px; color: var(--soft); }

/* ---------- The playable board ---------- */
.board-shell { background: var(--plate); border-radius: 26px; padding: clamp(14px, 3vw, 26px); }
.board {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: clamp(4px, 1vw, 10px);
  font-size: clamp(22px, 5.6vw, 38px);
}
.cell { aspect-ratio: 1; display: grid; place-items: center; }
.cell.op { color: var(--glyph); font: 500 0.95em/1 var(--num); transition: color 300ms; }
.cell.op.ok { color: var(--sage); }
.cell .keycap {
  width: 100%; height: calc(100% - 5px); align-self: start; cursor: default;
  display: grid; place-items: center;
}
.cell .keycap:active { transform: none; box-shadow: 0 5px 0 var(--edge); }
.slot {
  width: 100%; height: calc(100% - 5px); align-self: start; border-radius: 12px;
  background: var(--slot); border: 1.5px solid rgba(156, 158, 154, 0.25);
  cursor: pointer; padding: 0; color: var(--gold-ink); font: 600 1em/1 var(--num);
}
.slot.selected { border: 3px solid var(--gold); }
.slot.filled { background: var(--gold); border: 0; box-shadow: 0 5px 0 var(--gold-edge); }
.slot.wrong { background: var(--signal); color: #fff; box-shadow: 0 5px 0 #8f2f26; }
.pop { animation: pop 420ms cubic-bezier(.34, 1.56, .64, 1); }
@keyframes pop { from { transform: scale(.55); } to { transform: scale(1); } }
.glow { animation: glow 520ms ease-out both; }
@keyframes glow {
  40% { transform: scale(1.1); filter: drop-shadow(0 0 12px rgba(134, 174, 128, .9)); }
  100% { transform: scale(1); filter: none; }
}
.shake { animation: shake 360ms ease-out; }
@keyframes shake { 20%,60% { transform: translateX(-6px); } 40%,80% { transform: translateX(6px); } }

.tray { display: flex; justify-content: center; gap: 12px; margin-top: 22px; min-height: 64px; }
.tray .keycap {
  --face: #45484C; --edge: #2c2e31; --kink: #F1EFEA;
  width: 72px; height: 58px; font-size: 28px; border-radius: 16px;
}
.tray .keycap[disabled] { visibility: hidden; }
.board-note { margin: 16px 2px 0; font-size: 16px; color: var(--soft); min-height: 1.6em; }
.board-note strong { color: var(--ink); }

/* ---------- Feature rows ---------- */
.rows { display: grid; gap: 88px; padding: 24px 0 96px; }
.row { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; align-items: center; }
@media (min-width: 820px) {
  .row { grid-template-columns: 1fr 1fr; gap: 72px; }
  .row.flip .shot { order: 2; }
}
.row h2 { font: 700 clamp(32px, 4.4vw, 46px)/1.04 var(--num); margin: 0 0 14px; letter-spacing: -0.01em; }
.row p { margin: 0 0 12px; color: var(--soft); max-width: 40ch; }
.row p.quote {
  font: 600 22px/1.35 var(--num); color: var(--ink);
  border-left: 4px solid var(--sage); padding: 4px 0 4px 16px; margin-top: 20px;
}
.shot {
  margin: 0; /* figures carry a 40px default side margin */
  justify-self: center; width: min(320px, 82vw);
  border-radius: 34px; padding: 10px; background: var(--plate);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .45);
}
.shot img { border-radius: 25px; }

/* ---------- Closing band ---------- */
.closing {
  background: var(--plate); color: #EDEBE6; border-radius: 30px;
  padding: clamp(32px, 6vw, 64px); display: grid; gap: 28px; align-items: center; margin-bottom: 72px;
}
@media (min-width: 820px) { .closing { grid-template-columns: 1.3fr auto; } }
.closing h2 { font: 700 clamp(30px, 4vw, 44px)/1.05 var(--num); margin: 0 0 10px; }
.closing p { margin: 0; color: #A3A49F; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--rule); padding: 28px 0 40px; font-size: 15px; color: var(--soft); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; }
footer nav { display: flex; gap: 22px; }

/* ---------- Long-form pages (privacy) ---------- */
.doc { max-width: 44rem; padding: 24px 0 80px; }
.doc h1 { font: 700 clamp(40px, 6vw, 60px)/1 var(--num); margin: 12px 0 10px; letter-spacing: -0.015em; }
.doc .meta { color: var(--soft); margin: 0 0 32px; }
.doc h2 { font: 700 26px/1.15 var(--num); margin: 40px 0 8px; }
.doc p, .doc li { max-width: 68ch; }
.doc ul { padding-left: 1.2rem; }
.doc li { margin: 4px 0; }
.doc .contact { background: var(--raised); border-left: 4px solid var(--gold); border-radius: 10px; padding: 14px 18px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* Confetti canvas over the board */
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 10; }