:root {
  --paper: #fbf8f0;
  --surface: oklch(0.992 0.005 89.7);
  --field: #fff;
  --ink: oklch(0.23 0.028 219.7);
  --muted: oklch(0.23 0.028 219.7 / 0.64);
  --disabled: oklch(0.23 0.028 219.7 / 0.36);
  --line: oklch(0.23 0.028 219.7 / 0.12);
  --line-strong: oklch(0.23 0.028 219.7 / 0.28);
  --tint: oklch(0.23 0.028 219.7 / 0.06);
  --tint-hover: oklch(0.23 0.028 219.7 / 0.1);
  --danger: oklch(0.48 0.17 27);

  --ui: "Inter Tight", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);

  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 400px;
  height: 100dvh;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.4 var(--ui);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-synthesis: none;
}

h1, h2, p { margin: 0; }
button, input, select { font: inherit; color: inherit; }
button, label, select { touch-action: manipulation; }
[hidden] { display: none !important; }

:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------- Stage ---------- */

.stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 0;
  container-type: size;
}
.paper { position: absolute; inset: 0; width: 100%; height: 100%; }
.stage[data-dropping] { outline: 2px dashed var(--line-strong); outline-offset: -12px; }

.masthead {
  position: absolute;
  inset: 20px 28px auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
/* The logo is a stamp from the tool itself, pressed straight */
.brand { display: flex; align-items: center; gap: 14px; }
.brand-stamp { display: block; width: 124px; mix-blend-mode: multiply; }
.brand-stamp svg { display: block; width: 100%; height: auto; overflow: visible; }
.tagline { max-width: 22ch; font-size: 14px; color: var(--muted); text-wrap: balance; }
.masthead-actions { display: flex; align-items: center; gap: 4px; margin: -4px 0 0; }
.icon-btn {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--muted);
  cursor: pointer;
  transition: color 150ms ease-out;
}
.icon-btn svg { width: 20px; height: 20px; }
.icon-btn[aria-pressed="true"] .sound-off,
.icon-btn[aria-pressed="false"] .sound-waves { display: none; }
@media (hover: hover) {
  .icon-btn:hover { color: var(--ink); }
}
.btn-small.btn { background: var(--surface); box-shadow: 0 0 0 1px var(--line-strong); }

/* Sized from the stamp's own footprint, so tilting it never changes its scale */
.stamp {
  width: calc(var(--bw, 264) * min(2.3px, 100cqw / 400, 100cqh / 340));
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: none;
  cursor: var(--cursor, pointer), pointer;
  mix-blend-mode: multiply; /* ink soaks into the paper rather than sitting on it */
  -webkit-tap-highlight-color: transparent;
}
.stamp:active { cursor: var(--cursor-down, pointer), pointer; }
.stamp:focus-visible { outline-offset: 8px; }
.stamp svg { display: block; width: 100%; height: auto; overflow: visible; }

.hint {
  position: absolute;
  inset: auto 0 20px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  pointer-events: none;
}

/* ---------- Panel ---------- */

.panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--surface);
  border-left: 1px solid var(--line);
}
.panel-scroll { flex: 1; min-height: 0; overflow-y: auto; padding: 0 24px 24px; }

section { display: grid; gap: 14px; padding-block: 20px; }
section + section { border-top: 1px solid var(--line); }
h2 { font-size: 15px; font-weight: 650; }
.note { margin-top: -8px; font-size: 13px; color: var(--muted); text-wrap: pretty; }
.start-over { justify-self: start; margin: 4px 0 0 -10px; }
.credit { padding-top: 20px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); text-wrap: pretty; }

.field { display: grid; gap: 6px; font-size: 13px; font-weight: 500; color: var(--muted); }

input[type="text"], select {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--field);
  color: var(--ink);
  font-size: 16px; /* below 16px, iOS zooms the page on focus */
  font-weight: 400;
  transition: border-color 150ms ease-out;
}
input[type="text"]:focus-visible, select:focus-visible { outline-offset: 0; border-color: var(--ink); }
@media (hover: hover) {
  input[type="text"]:hover, select:hover { border-color: var(--ink); }
}

.range {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}
.range output { font-variant-numeric: tabular-nums; }
.range input { grid-column: 1 / -1; width: 100%; height: 28px; margin: 0; accent-color: var(--ink); cursor: pointer; }

.check { display: flex; align-items: center; gap: 10px; min-height: 32px; cursor: pointer; }
.check input { width: 18px; height: 18px; margin: 0; accent-color: var(--ink); cursor: pointer; }

/* Segmented choice: radios under their labels */
.seg {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 2px;
  padding: 3px;
  border-radius: 10px;
  background: var(--tint);
}
.seg label {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 36px;
  padding: 4px 6px;
  border-radius: 7px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  text-align: center;
  cursor: pointer;
  transition: color 150ms ease-out;
}
.seg label:has(:checked) {
  background: var(--field);
  color: var(--ink);
  box-shadow: 0 0 0 1px var(--line), 0 1px 2px oklch(0.23 0.028 219.7 / 0.08);
}
.seg label:has(:focus-visible) { outline: 2px solid var(--ink); outline-offset: 2px; }
/* Four faces of four widths share one row */
[data-faces] label { font-size: 13px; }

.frames { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; }
.frame {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border-radius: 10px;
  box-shadow: inset 0 0 0 1px var(--line);
  color: var(--muted);
  cursor: pointer;
  transition: color 150ms ease-out, box-shadow 150ms ease-out;
}
.frame svg { width: 28px; height: 28px; }
.frame:has(:checked) { background: var(--field); color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }
.frame:has(:focus-visible) { outline: 2px solid var(--ink); outline-offset: 2px; }
@media (hover: hover) {
  .frame:hover, .seg label:hover { color: var(--ink); }
}

.swatches { display: flex; flex-wrap: wrap; gap: 14px; padding: 4px; }
.swatch {
  position: relative;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--c);
  cursor: pointer;
  transition: box-shadow 150ms ease-out;
}
/* 44px hit area around a 30px dot */
.swatch::before { content: ""; position: absolute; inset: -7px; }
.swatch:has(:checked), .swatch[data-active] { box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--c); }
.swatch:has(:focus-visible) { outline: 2px solid var(--ink); outline-offset: 6px; }
.swatch-custom:not([data-active]) {
  background: conic-gradient(from 0deg, #ba2b28, #c9962b, #256d4c, #21539c, #58368e, #ba2b28);
}
.swatch-custom input { position: absolute; inset: -7px; width: 44px; height: 44px; opacity: 0; cursor: pointer; }

.papers { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px 10px; }
.paper-chip {
  position: relative;
  display: grid;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  text-align: center;
  cursor: pointer;
  transition: color 150ms ease-out;
}
.paper-chip svg {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 0 0 1px var(--line);
  transition: box-shadow 150ms ease-out;
}
.paper-chip:has(:checked) { color: var(--ink); }
.paper-chip:has(:checked) svg { box-shadow: 0 0 0 2px var(--surface), 0 0 0 3.5px var(--ink); }
.paper-chip:has(:focus-visible) svg { outline: 2px solid var(--ink); outline-offset: 5px; }
@media (hover: hover) {
  .paper-chip:hover { color: var(--ink); }
}

/* ---------- Logo ---------- */

.logo { display: grid; gap: 14px; }
.logo-empty, .logo-loaded { display: grid; gap: 14px; }
.logo-empty .note { margin-top: -6px; }
.logo-file { display: flex; align-items: center; gap: 8px; }
.logo-file img {
  width: 44px;
  height: 44px;
  margin-right: auto;
  padding: 4px;
  border-radius: 8px;
  background: var(--field);
  box-shadow: 0 0 0 1px var(--line);
  object-fit: contain;
}
.error { font-size: 13px; color: var(--danger); }

/* ---------- Buttons ---------- */

.btn {
  position: relative;
  display: inline-grid;
  place-items: center;
  height: 44px;
  padding: 0 16px;
  border: 0;
  border-radius: 10px;
  background: var(--tint);
  color: var(--ink);
  font-size: 15px;
  font-weight: 550;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 150ms ease-out, transform 120ms var(--ease-out);
}
.btn:active { transform: scale(0.97); }
.btn:has(:focus-visible) { outline: 2px solid var(--ink); outline-offset: 2px; }
.btn:disabled { color: var(--disabled); cursor: default; }
.btn-small { height: 36px; padding: 0 12px; font-size: 14px; }
.btn-primary { flex: 1; background: var(--ink); color: var(--paper); }
.btn-primary:disabled { background: var(--line-strong); color: var(--paper); }

.text-btn {
  min-height: 44px;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  background: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: color 150ms ease-out;
}

@media (hover: hover) {
  .btn:not(:disabled):hover { background: var(--tint-hover); }
  .btn-primary:not(:disabled):hover { background: color-mix(in oklch, var(--ink) 86%, white); }
  .text-btn:hover { color: var(--ink); }
}

.actions {
  padding: 12px 24px calc(16px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  background: var(--surface);
}
.actions-row { display: flex; gap: 8px; }
.actions-row .btn:not(.btn-primary) { min-width: 76px; }
.status { font-size: 13px; text-wrap: pretty; }
.status:not(:empty) { margin-bottom: 10px; }

/* ---------- Small screens: the stamp stays in view while the settings scroll ---------- */

@media (max-width: 860px) {
  body { display: block; height: auto; }
  .stage {
    position: sticky;
    top: 0;
    z-index: 2;
    height: 44svh;
    min-height: 260px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }
  .masthead { inset: 10px 16px auto; }
  .tagline, .hint { display: none; }
  .masthead { align-items: center; }
  .brand-stamp { width: 92px; }
  .masthead-actions { gap: 0; margin-right: -6px; }
  .masthead .text-btn { padding-inline: 6px; white-space: nowrap; }
  .panel { border-left: 0; }
  .panel-scroll { overflow: visible; padding-inline: 16px; }
  .actions { position: sticky; bottom: 0; z-index: 2; padding-inline: 16px; }
}

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