:root {
  --paper: #efe9dc;
  --paper-deep: #e6dfcf;
  --card: #f7f2e6;
  --enamel: #eae3d3;
  --walnut: #6b4b33;
  --brass: #c9a45c;
  --ink: #2b2724;
  --text: #3a342b;
  --dim: #8d8474;
  --accent: #e8622d;
  --line: #d8d0bd;
  --sans: "Familjen Grotesk", "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--paper);
  color: var(--text);
  font-family: var(--sans);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 620px;
  margin: 0 auto;
  padding: 26px 18px calc(30px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.masthead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 0 4px;
}
.wordmark {
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.wordmark .dot { color: var(--accent); }
.strap { font-size: 13.5px; color: var(--dim); }

.stage-wrap { position: relative; }
#stage {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  cursor: pointer;
  touch-action: manipulation;
}
.hint {
  display: block;
  text-align: center;
  padding-top: 8px;
  color: var(--dim);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  pointer-events: none;
}

/* control deck — enamel panel */
.deck {
  background: var(--enamel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.65) inset, 0 10px 24px -18px rgba(59, 47, 32, 0.5);
}
.deck-row { display: flex; gap: 10px; align-items: center; }
.deck-row.wrap { flex-wrap: wrap; }

.url-field {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0 12px;
}
.url-field:focus-within { border-color: var(--brass); }
.field-label {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}
.url-field input {
  flex: 1;
  min-width: 0;
  background: none;
  border: none;
  outline: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13.5px;
  padding: 12px 0;
}
.url-field input::placeholder { color: #b6ad99; }

.key {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--line);
  border-bottom-width: 2.5px;
  border-radius: 10px;
  padding: 10px 15px;
  cursor: pointer;
  transition: transform 0.06s, border-bottom-width 0.06s, background 0.15s;
}
.key:active { transform: translateY(1px); border-bottom-width: 1.5px; }
.key-accent {
  background: var(--accent);
  border-color: #c14e20;
  color: #fdf6ec;
}
.key.muted { color: var(--dim); }

.seg {
  display: flex;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 3px;
  gap: 3px;
}
.seg button {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 12.5px;
  color: var(--dim);
  background: none;
  border: none;
  border-radius: 7px;
  padding: 8px 13px;
  cursor: pointer;
}
.seg button.on { background: var(--enamel); color: var(--text); box-shadow: 0 1px 2px rgba(59,47,32,0.18); }

.swatches { display: flex; gap: 7px; align-items: center; padding: 0 2px; }
.swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.7);
  outline: 1px solid var(--line);
  cursor: pointer;
  padding: 0;
  transition: transform 0.1s;
}
.swatch.on { transform: scale(1.2); outline: 2px solid var(--brass); }

.key:focus-visible, .seg button:focus-visible, .swatch:focus-visible, .url-field input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.note { font-size: 12.5px; color: var(--dim); line-height: 1.5; padding: 0 2px; }
.note b { color: var(--text); font-weight: 600; }

.foot {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 2px 4px 0;
  font-size: 12px;
  color: var(--dim);
  font-family: var(--mono);
}
.foot a { color: var(--text); text-decoration: none; border-bottom: 1px solid var(--brass); }

/* SVG overlay */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgba(43, 39, 36, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(5px);
  padding: 18px;
}
.overlay[hidden] { display: none; }
.overlay-card {
  background: var(--card);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  max-width: min(88vw, 400px);
  box-shadow: 0 24px 60px -24px rgba(30, 24, 16, 0.6);
}
.overlay-qr svg { display: block; width: min(68vw, 300px); height: auto; border-radius: 8px; }
.overlay-row { display: flex; gap: 10px; }
.overlay-note { font-size: 11.5px; color: var(--dim); text-align: center; line-height: 1.5; max-width: 290px; }

@media (max-width: 460px) {
  .masthead { flex-direction: column; gap: 2px; }
  .key { padding: 10px 12px; }
  .seg button { padding: 8px 10px; }
}

/* about + FAQ (quiet, below the instrument) */
.about {
  padding: 18px 6px 4px;
  border-top: 1px solid var(--line);
  margin-top: 8px;
  color: var(--dim);
  font-size: 13.5px;
  line-height: 1.65;
}
.about h2 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  margin: 18px 0 8px;
}
.about h2:first-child { margin-top: 0; }
.about p { margin: 0 0 10px; }
.about b { color: var(--text); font-weight: 600; }
.about a { color: var(--text); text-decoration: none; border-bottom: 1px solid var(--brass); }
.about details {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--enamel);
  padding: 0 14px;
  margin: 0 0 8px;
}
.about summary {
  cursor: pointer;
  padding: 11px 0;
  font-weight: 600;
  color: var(--text);
  font-size: 13px;
  list-style-position: inside;
}
.about details p { padding-bottom: 12px; margin: 0; }
.about .about-kpg { margin-top: 16px; }