:root {
  --ink: #2b2622;
  --muted: #746c64;
  --line: #e4ddd4;
  --paper: #fbf8f4;
  --card: #fff;
  --accent: #8c3d2f;
  --accent-ink: #fff;
  --ok: #2e6b4f;
  --warn: #8a5a00;
  --chip: #f3eee7;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; color: var(--ink); background: var(--paper); overflow-x: hidden; }
header { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 28px; border-bottom: 1px solid var(--line); }
header h1 { font-size: 20px; font-weight: 600; margin: 0; }
.brand { display: flex; align-items: center; }
.brand img { height: 44px; width: auto; display: block; }
.pen-action { margin-top: 14px; }
@media (hover: hover) and (pointer: fine) {
  .pen-field, .pen-field * { cursor: url("/studio/static/pen-cursor.png") 5 37, crosshair; }
}
header a { color: var(--accent); font-size: 14px; text-decoration: none; }
main { max-width: 1100px; margin: 0 auto; padding: 24px 28px 64px; width: 100%; }
h2 { font-size: 16px; font-weight: 600; margin: 0 0 12px; }
button, select, input[type="text"], input[type="password"], input[type="date"], input[type="number"] {
  font: inherit; color: inherit; background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 7px 10px;
}
button { cursor: pointer; background: var(--accent); color: var(--accent-ink); border: none; touch-action: manipulation; }
button.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
button:disabled { opacity: 0.5; cursor: default; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.row > label { flex: 1 1 140px; min-width: 0; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
label select, label input:not([type="checkbox"]):not([type="color"]):not([type="file"]) { width: 100%; max-width: 100%; }
.pilot-size-choice { min-width: 190px; flex: 1 1 190px; }
.note { font-size: 13px; color: var(--muted); line-height: 1.45; margin: 0; }
.drop { border: 1.5px dashed var(--line); border-radius: 10px; padding: 28px; text-align: center; color: var(--muted); background: var(--card); }
.drop.over { border-color: var(--accent); color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 14px; margin-top: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; cursor: pointer; }
.card img { width: 100%; height: 140px; object-fit: cover; display: block; background: var(--chip); }
.card .meta { padding: 10px 12px; font-size: 13px; }
.card .meta b { display: block; font-size: 14px; }
.chips { display: flex; gap: 4px; margin: 6px 0; }
.chips i { display: inline-block; height: 16px; border-radius: 3px; border: 1px solid var(--line); }
.badge { display: inline-block; font-size: 11px; padding: 1px 6px; border-radius: 8px; background: var(--chip); color: var(--muted); }
.badge.ok { background: #e5f2eb; color: var(--ok); }
.badge.warn { background: #fbf0d8; color: var(--warn); }
.toolbar { display: flex; gap: 10px; align-items: center; margin-top: 18px; flex-wrap: wrap; }
.drawer { position: fixed; top: 0; right: 0; height: 100%; width: 380px; max-width: 100%; background: var(--card); border-left: 1px solid var(--line); padding: 22px; overflow: auto; box-shadow: -8px 0 24px rgba(0,0,0,.06); }
.drawer h3 { margin: 0 0 4px; }
.drawer .field { margin: 10px 0; }
.drawer .actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.previews { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; margin-top: 18px; }
.preview { background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.preview img { width: 100%; display: block; }
.preview-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; background: var(--line); }
.preview-pair img { min-width: 0; max-height: 420px; object-fit: contain; background: var(--paper); }
.preview .meta { padding: 10px 12px; font-size: 13px; }
.preview .slot { display: flex; align-items: center; gap: 6px; margin: 3px 0; }
.swatch { width: 14px; height: 14px; border-radius: 3px; border: 1px solid var(--line); display: inline-block; }
.buckets { display: flex; gap: 10px; flex-wrap: wrap; }
.buckets .tone { align-items: center; gap: 4px; font-size: 11px; text-transform: capitalize; width: 52px; }
.buckets button {
  appearance: none; -webkit-appearance: none;
  width: 36px; height: 36px; min-height: 36px; border-radius: 50%;
  border: 2px solid #fff; box-shadow: inset 0 0 0 1px rgba(0,0,0,.35); padding: 0;
}
.buckets button.on { border-color: var(--ink); }
.stage { display: grid; grid-template-columns: minmax(280px, 1fr) 280px; gap: 18px; align-items: start; }
.stage canvas { width: 100%; height: auto; background: var(--chip); border-radius: 10px; cursor: crosshair; touch-action: none; }
.shop-layout { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 28px; align-items: start; }
.shop-layout > * { min-width: 0; }
.photo-hit { position: relative; }
.region-highlight { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; border-radius: 10px; }
.model-wrap { margin: 0; }
.model-wrap img { width: 100%; max-width: 100%; height: auto; border-radius: 10px; display: block; }
.model-wrap figcaption { margin-top: 8px; font-size: 13px; color: var(--muted); }
.pair-views { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.pair-box { margin: 14px 0; }
.template-menu { position: relative; }
.template-current, .template-thumb { background: var(--card); color: var(--ink); border: 1px solid var(--line); }
.template-current { display: inline-flex; align-items: center; gap: 8px; }
.template-current img, .template-thumb img { width: 36px; height: 54px; object-fit: cover; object-position: top; border-radius: 4px; display: block; }
.template-panel { position: absolute; z-index: 4; top: calc(100% + 6px); left: 0; display: flex; flex-wrap: wrap; gap: 8px; padding: 8px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.08); max-width: min(100vw - 32px, 420px); }
.template-panel[hidden] { display: none; }
.template-thumb { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 4px; }
.template-thumb.on { border-color: var(--accent); }
.template-thumb small { font-size: 11px; color: var(--muted); }
.measured { display: flex; flex-direction: column; gap: 14px; margin-top: 12px; }
.palette { display: flex; flex-direction: column; gap: 6px; }
.palette-name { font-size: 13px; color: var(--ink); }
.palette-dots { display: flex; flex-wrap: wrap; gap: 12px; }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.measured i { width: 28px; height: 28px; border-radius: 50%; display: inline-block; border: 1px solid var(--line); flex: none; }
.pair-box small { align-self: center; color: var(--muted); font-size: 12px; }
.design { display: grid; grid-template-columns: minmax(280px, 1.1fr) minmax(280px, 1fr); gap: 28px; align-items: start; }
.design > * { min-width: 0; }
.design .dress { width: 100%; border-radius: 10px; display: block; }
.regions { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.regions button, .pick { text-align: left; background: var(--card); color: var(--ink); border: 1px solid var(--line); }
.regions button { display: flex; justify-content: space-between; gap: 12px; }
.regions button.on { border-color: var(--accent); }
.regions small, .pick small { color: var(--muted); }
.picks { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.pick { padding: 0; overflow: hidden; border-radius: 10px; }
.pick img { width: 100%; height: 90px; object-fit: cover; display: block; }
.pick span, .pick small { display: block; padding: 0 8px 6px; font-size: 13px; }
header nav { display: flex; flex-wrap: wrap; gap: 14px; }
#login { max-width: 320px; width: calc(100% - 32px); margin: 12vh auto; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
.msg { background: var(--chip); border-radius: 8px; padding: 10px 12px; font-size: 14px; }

/* Tablet: stack major columns, keep front/back side by side where there is room */
@media (max-width: 900px) {
  main { padding: 20px 20px 56px; }
  .stage, .shop-layout, .design { grid-template-columns: 1fr; }
  .shop-layout .model-wrap { max-width: 280px; }
}

/* Phone: tighter spacing, single-column photograph pairs, larger tap targets */
@media (max-width: 640px) {
  header { padding: 12px 16px; }
  .brand img { height: 36px; }
  header nav { gap: 10px; font-size: 13px; }
  main { padding: 16px 16px 48px; }
  h2 { font-size: 15px; }
  .row { gap: 10px; }
  .row > label { flex: 1 1 100%; }
  .pair-views { grid-template-columns: 1fr; gap: 20px; }
  .pair-box .row > button { flex: 1 1 calc(50% - 6px); min-height: 44px; }
  .template-current { width: 100%; justify-content: flex-start; min-height: 44px; }
  .template-panel { position: static; margin-top: 8px; max-width: none; }
  .template-menu { display: flex; flex-direction: column; align-items: stretch; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
  .previews { grid-template-columns: 1fr; }
  .preview-pair img { max-height: 320px; }
  .picks { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .preview .row button { flex: 1 1 calc(50% - 6px); min-height: 44px; }
  .regions button { min-height: 44px; }
  .pen-action, form > button[type="submit"] { width: 100%; min-height: 44px; }
  .drawer { width: 100%; padding: 18px 16px; }
  .drop { padding: 20px 16px; }
  .buckets .tone { width: auto; min-width: 52px; }
  .chip { font-size: 11px; }
  .measured i { width: 24px; height: 24px; }
}

@media (max-width: 640px) and (pointer: coarse) {
  button, .regions button, .pick, .template-current, .template-thumb { min-height: 44px; }
  input[type="color"] { min-width: 44px; min-height: 44px; padding: 4px; }
}