:root {
  --paper: #f3eedf;
  --paper-deep: #e9e1cb;
  --ink: #26241e;
  --ink-soft: #6b665a;
  --line: #d3cab2;
  --accent: #b4532a;
  --card: #faf7ee;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

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

.masthead {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 4vw, 48px);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-family: var(--serif);
  font-size: 20px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.brand span { color: var(--accent); font-style: italic; }

.masthead nav { display: flex; gap: clamp(10px, 2vw, 26px); overflow-x: auto; scrollbar-width: none; }
.masthead nav::-webkit-scrollbar { display: none; }
.masthead nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}
.masthead nav a:hover { color: var(--ink); }

/* ---------- hero ---------- */

.hero { padding: clamp(20px, 4vw, 48px) clamp(16px, 4vw, 48px) 0; }

.hero-copy { max-width: 720px; }

.eyebrow {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(44px, 9vw, 104px);
  line-height: 0.95;
  letter-spacing: -0.02em;
}
h1 em { color: var(--accent); }

.lede { margin: 14px 0 0; max-width: 46ch; color: var(--ink-soft); font-size: 17px; }

.stage {
  position: relative;
  margin-top: clamp(12px, 2vw, 24px);
  height: min(68vh, 640px);
  min-height: 340px;
  border-radius: 18px;
  overflow: hidden;
  background: radial-gradient(120% 90% at 50% 20%, #fbf8ef 0%, var(--paper-deep) 70%, #ddd3b9 100%);
  border: 1px solid var(--line);
}

#viewer { display: block; width: 100%; height: 100%; touch-action: none; cursor: grab; }
#viewer:active { cursor: grabbing; }
#viewer.over-door { cursor: pointer; }

.loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 10px;
  justify-items: center;
  color: var(--ink-soft);
  font-size: 13px;
  letter-spacing: 0.06em;
}
.loading .bar { width: 180px; height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; }
.loading .bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width 0.2s; }
.loading.error { color: var(--accent); }

.hint {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  margin: 0;
  padding: 6px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--card) 80%, transparent);
  color: var(--ink-soft);
  font-size: 12px;
  white-space: nowrap;
  pointer-events: none;
  transition: opacity 0.6s;
}
.hint.gone { opacity: 0; }

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  padding: 16px 2px 0;
}
.group { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.label {
  margin-right: 6px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

button {
  font: inherit;
  font-size: 13px;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
button:hover { border-color: var(--ink-soft); }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }
button.ghost { background: transparent; }
button.ghost[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ---------- sheets ---------- */

.notice {
  margin: clamp(24px, 4vw, 40px) clamp(16px, 4vw, 48px) 0;
  padding: 10px 14px;
  border-left: 3px solid var(--accent);
  background: var(--card);
  font-size: 14px;
  color: var(--ink-soft);
}

.sheet {
  margin: 0 clamp(16px, 4vw, 48px);
  padding: clamp(28px, 5vw, 56px) 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(160px, 1fr) 3fr;
  gap: 16px 40px;
  scroll-margin-top: 60px;
}

h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.1;
}

.facts { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; }
.fact { padding: 14px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.fact span { display: block; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); }
.fact strong { display: block; margin-top: 4px; font-family: var(--serif); font-weight: 400; font-size: 20px; }

.table { margin: 0; }
.table > div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
}
.table > div:last-child { border-bottom: 0; }
.table dt { color: var(--ink-soft); }
.table dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }

.tbc {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 7px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  vertical-align: middle;
  white-space: nowrap;
}

.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 14px; }
.swatch { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.swatch i { display: block; height: 96px; border-bottom: 1px solid var(--line); }
.swatch figcaption { padding: 12px 14px; }
.swatch span { display: block; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); }
.swatch strong { display: block; font-family: var(--serif); font-weight: 400; font-size: 20px; }
.swatch small { color: var(--ink-soft); }

footer { padding: 32px clamp(16px, 4vw, 48px) 48px; color: var(--ink-soft); font-size: 13px; }

@media (max-width: 720px) {
  .sheet { grid-template-columns: 1fr; }
  .masthead nav a { font-size: 12px; }
  .stage { height: 56vh; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}