/* Yabe prototype. Design system: instrument, not marketplace.
   One accent, reserved for whatever is moving against you right now. */

:root {
  --paper: #F7F5F0;
  --ink: #17150F;
  --ink-2: #5C574C;
  --ink-3: #8A8478;
  --rule: #C9C2B2;
  --rule-soft: #DFD9CC;
  --band: #EFEAE0;
  --plate: #E7E2D6;
  --card: #FFFFFF;
  --hot: #B23A0F;
  --hot-bright: #C13F10;
  --hot-fill: #A8330D;
  --hot-on-dark: #E4703F;
  --on-dark: #F7F5F0;
  --on-dark-2: #B8B2A4;
  --dark-rule: #45402F;
  --serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --sans: Archivo, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --gutter: clamp(20px, 4vw, 56px);
  --maxw: 1440px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--hot); }
a:hover { color: #8A2C0A; }

img { max-width: 100%; }

.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.4px;
  font-weight: 600;
  color: var(--ink-2);
  margin: 0;
}
.eyebrow--hot { color: var(--hot); }

.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--hot); flex-shrink: 0; display: inline-block; }

/* ---------- header ---------- */
.site-head {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 34px);
  padding-block: 20px;
  flex-wrap: wrap;
}
.mark {
  font-family: var(--serif);
  font-size: 32px;
  line-height: 1;
  letter-spacing: -0.5px;
  color: var(--ink);
  text-decoration: none;
}
.site-nav { display: flex; gap: clamp(14px, 2vw, 26px); flex-grow: 1; flex-wrap: wrap; }
.site-nav a { font-size: 14px; font-weight: 500; color: var(--ink-2); text-decoration: none; }
.site-nav a[aria-current] { color: var(--ink); }
.signin { font-size: 14px; font-weight: 600; color: var(--ink); text-decoration: none; }

/* segmented mode switch */
.modes {
  display: inline-flex;
  gap: 3px;
  border: 1px solid var(--rule-soft);
  border-radius: 9px;
  padding: 3px;
  background: var(--card);
}
.modes a, .modes button {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 40px;
  padding: 0 15px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.modes a[aria-current], .modes [aria-selected="true"] { background: var(--ink); color: #fff; }
.modes .dot { width: 7px; height: 7px; background: var(--hot-on-dark); }

/* ---------- hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 4vw, 40px);
  padding-block: clamp(20px, 3vw, 30px) clamp(40px, 6vw, 56px);
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(44px, 7vw, 96px);
  line-height: 0.96;
  letter-spacing: -0.02em;
  margin: 0 0 clamp(18px, 3vw, 30px);
}
.lede { font-size: clamp(17px, 1.5vw, 19px); line-height: 1.5; color: var(--ink-2); max-width: 34ch; margin: 0 0 clamp(22px, 3vw, 34px); }

.rail { border-left: 1px solid var(--rule); padding-left: clamp(20px, 3vw, 40px); display: flex; flex-direction: column; }
.rail-head { display: flex; align-items: center; gap: 9px; margin-bottom: 20px; flex-wrap: wrap; }

.plate { background: var(--plate); overflow: hidden; aspect-ratio: 16 / 9; margin-bottom: 14px; }
.plate img { width: 100%; height: 100%; object-fit: cover; display: block; }

.lot-name { font-family: var(--serif); font-size: clamp(24px, 2.4vw, 30px); line-height: 1.1; }
.lot-meta { font-family: var(--mono); font-size: 11px; letter-spacing: 1px; color: #6E6858; margin-top: 4px; display: block; }

.price-xl {
  display: block;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: clamp(64px, 11vw, 172px);
  line-height: 0.84;
  letter-spacing: -0.05em;
  color: var(--hot-bright);
}

/* ---------- forms ---------- */
.field { display: flex; flex-direction: column; gap: 10px; max-width: 470px; }
.field label { font-size: 14px; font-weight: 600; }
.field-row { display: flex; gap: 9px; flex-wrap: wrap; }
input[type="email"], input[type="text"], input[type="search"] {
  flex: 1 1 200px;
  min-height: 56px;
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 0 15px;
  font-family: var(--sans);
  font-size: 16px;
  background: transparent;
  color: var(--ink);
}
.note { font-size: 13px; color: var(--ink-3); }

.btn {
  min-height: 56px;
  border: none;
  border-radius: 0;
  padding: 0 26px;
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  background: var(--ink);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}
.btn--hot { background: var(--hot-fill); }
.btn--buy { min-height: 66px; font-size: 19px; width: 100%; }
.btn--ghost { background: transparent; border: 1px solid var(--rule); color: var(--ink-2); min-height: 48px; font-size: 14px; font-weight: 500; }
.btn:disabled { opacity: 0.6; cursor: default; }

/* ---------- bands ---------- */
.band-dark { background: var(--ink); color: var(--on-dark); }
.band-dark h2 { color: var(--on-dark); }
.band-dark p { color: var(--on-dark-2); }
.band-sand { background: var(--band); }
.band { padding-block: clamp(44px, 6vw, 72px); }

h2 { font-family: var(--serif); font-weight: 400; font-size: clamp(34px, 4.6vw, 62px); line-height: 1.04; margin: 0 0 20px; }
.split { display: flex; align-items: flex-end; gap: clamp(20px, 3vw, 44px); flex-wrap: wrap; }
.split p { margin: 0 0 8px; }

/* ladder */
.ladder { display: flex; align-items: flex-end; gap: 6px; height: clamp(180px, 22vw, 300px); margin-block: clamp(24px, 3vw, 34px); }
.ladder .step { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; height: 100%; gap: 9px; }
.ladder .cap { font-family: var(--mono); font-size: 10px; letter-spacing: 0.8px; text-align: center; color: var(--ink-3); }
.ladder .bar { background: var(--on-dark); }
.ladder .step--past .bar { background: #2E2A20; }
.ladder .step--sold .bar { background: var(--hot-on-dark); }
.ladder .step--sold .cap { color: var(--hot-on-dark); font-weight: 600; }
.ledger { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--dark-rule); padding-top: 16px; flex-wrap: wrap; }
.ledger div { display: flex; flex-direction: column; gap: 3px; }
.ledger .k { font-family: var(--mono); font-size: 11px; letter-spacing: 1.2px; color: var(--ink-3); }
.ledger .v { font-family: var(--mono); font-size: clamp(18px, 2vw, 26px); font-weight: 600; font-variant-numeric: tabular-nums; color: var(--on-dark); }

/* nerve */
.nerve { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(24px, 4vw, 40px); align-items: center; padding-block: clamp(44px, 6vw, 72px); }
.count-xl {
  display: block;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: clamp(96px, 15vw, 210px);
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: var(--hot-bright);
}

/* two modes */
.modes-grid { display: grid; grid-template-columns: 7fr 5fr; gap: clamp(20px, 3vw, 40px); }
.mode-card { padding: clamp(24px, 3vw, 38px); display: flex; flex-direction: column; gap: 18px; text-decoration: none; color: var(--ink); }
.mode-card--drop { background: var(--ink); color: var(--on-dark); }
.mode-card--drop .title { color: var(--on-dark); }
.mode-card--drop li { color: var(--on-dark-2); }
.mode-card--auction { border: 1px solid var(--rule); }
.mode-card .title { font-family: var(--serif); font-size: clamp(28px, 3vw, 44px); line-height: 1.06; }
.mode-card ul { margin: 0; padding-left: 19px; display: flex; flex-direction: column; gap: 9px; }
.mode-card li { font-size: 15px; line-height: 1.5; color: var(--ink-2); }
.mode-card .go { font-size: 16px; font-weight: 600; margin-top: auto; }
.mode-card--drop .go { color: var(--hot-on-dark); }

/* sellers */
.sellers { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 4vw, 40px); }
.promise { display: flex; gap: 12px; align-items: flex-start; }
.promise svg { flex-shrink: 0; margin-top: 2px; }
.pending { border: 1px dashed var(--rule); padding: 22px 26px; display: flex; flex-direction: column; gap: 6px; }

/* close + footer */
.close { display: flex; flex-direction: column; align-items: center; gap: 24px; text-align: center; }
.close h2 { max-width: 18ch; }
.close .field { width: min(520px, 100%); align-items: stretch; }
.close input { background: transparent; border-color: var(--dark-rule); color: var(--on-dark); }
.close input::placeholder { color: #7E7869; }

.site-foot { display: flex; align-items: center; gap: 22px; padding-block: 32px; flex-wrap: wrap; }
.site-foot nav { display: flex; gap: 20px; flex-grow: 1; flex-wrap: wrap; }
.site-foot a { font-size: 13px; color: var(--ink-2); text-decoration: none; }
.site-foot .legal { font-size: 13px; color: var(--ink-3); }

/* prototype banner on the app screens */
.proto {
  background: var(--ink);
  color: var(--on-dark-2);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  padding: 10px var(--gutter);
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
}
.proto a { color: var(--hot-on-dark); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .rail { border-left: none; border-top: 1px solid var(--rule); padding-left: 0; padding-top: 28px; }
  .nerve { grid-template-columns: 1fr; }
  .modes-grid { grid-template-columns: 1fr; }
  .sellers { grid-template-columns: 1fr; }
  .ladder { gap: 3px; }
  .ladder .cap { font-size: 0; }
  .ladder .step--sold .cap { font-size: 10px; }
}

@media (max-width: 560px) {
  .site-nav { order: 3; width: 100%; }
  .ledger { gap: 10px; }
  .btn { width: 100%; }
  .field-row .btn { width: 100%; }
}

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