:root {
  --bg: #efefee;
  --chrome: #ffffff;
  --text: #111111;
  --muted: #6b6b6b;
  --line: rgba(0, 0, 0, 0.09);
  --hover: rgba(0, 0, 0, 0.05);
  --tile: #d9d9d7;
  --accent: #2f6bff;
  --ring: rgba(0, 0, 0, 0.45);
  --danger: #d4351c;
  --pri-bg: #111111;
  --pri-text: #ffffff;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.08);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141414;
    --chrome: #1c1c1c;
    --text: #ececec;
    --muted: #9a9a9a;
    --line: rgba(255, 255, 255, 0.09);
    --hover: rgba(255, 255, 255, 0.06);
    --tile: #2a2a2a;
    --accent: #5b8cff;
    --ring: rgba(255, 255, 255, 0.55);
    --danger: #ff6a52;
    --pri-bg: #ececec;
    --pri-text: #111111;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.4);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font: 400 13px/1.45 Inter, system-ui, sans-serif;
  font-feature-settings: "tnum" 1, "cv11" 1;
  -webkit-font-smoothing: antialiased;
}

body { display: flex; flex-direction: column; }

/* ---------- controls: one button system ---------- */

button, .btn {
  height: 32px;
  padding: 0 12px;
  border-radius: 6px;
  border: 1px solid var(--line);
  font: 500 13px/1 Inter, system-ui, sans-serif;
  color: var(--text);
  background: var(--chrome);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.12s, border-color 0.12s;
}
.q:hover { background: var(--hover); }
.pri { background: var(--pri-bg); color: var(--pri-text); border-color: transparent; }
.pri:hover { opacity: 0.88; }
button:disabled { opacity: 0.4; cursor: default; }
button:focus-visible, .btn:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.sm { height: 24px; padding: 0 8px; font-size: 12px; }
.icon { width: 32px; padding: 0; border-color: transparent; background: transparent; }
.icon svg { width: 16px; height: 16px; stroke: currentColor; stroke-width: 1.5; fill: none; stroke-linecap: round; }
.q.danger { color: var(--danger); border-color: var(--danger); }

input[type="text"], input[type="search"], textarea {
  font: 400 13px/1.4 Inter, system-ui, sans-serif;
  color: var(--text);
  background: var(--chrome);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 10px;
  height: 32px;
  width: 100%;
  min-width: 0;
}
textarea { height: auto; padding: 8px 10px; resize: vertical; }
input::placeholder, textarea::placeholder { color: var(--muted); }

.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* ---------- top bar ---------- */

.bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  padding-top: max(8px, env(safe-area-inset-top));
  background: var(--chrome);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 2;
}
.brand { font-weight: 600; font-size: 14px; letter-spacing: -0.01em; margin-right: 8px; }

.search { position: relative; flex: 1; max-width: 520px; margin: 0 auto; }
.search input { padding-left: 30px; background: var(--bg); border-color: transparent; }
.search input:focus { background: var(--chrome); border-color: var(--line); }
.search-icon {
  position: absolute; left: 10px; top: 50%; translate: 0 -50%;
  width: 14px; height: 14px; stroke: var(--muted); stroke-width: 1.5; fill: none; stroke-linecap: round;
  pointer-events: none;
}

.seg { display: inline-flex; padding: 2px; border-radius: 8px; background: var(--bg); }
.seg button { height: 28px; border: 0; background: transparent; color: var(--muted); }
.seg button[aria-pressed="true"] { background: var(--chrome); color: var(--text); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08); }

/* ---------- stage ---------- */

.stage { position: relative; flex: 1; min-height: 0; }
#field { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; }
#field.panning { cursor: grabbing; }

.empty {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 16px; pointer-events: none;
}
.empty[hidden] { display: none; }
.empty > * { pointer-events: auto; }
.empty h1 { font-size: 20px; font-weight: 600; letter-spacing: -0.015em; margin: 0 0 8px; }
.empty p { color: var(--muted); max-width: 420px; margin: 0 0 20px; text-wrap: pretty; }
.empty .row { justify-content: center; }

.drop {
  position: absolute; inset: 12px; border: 1.5px dashed var(--text); border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  font-weight: 500; pointer-events: none; z-index: 3;
}
.drop[hidden] { display: none; }

.foot {
  position: absolute; left: 12px; bottom: max(12px, env(safe-area-inset-bottom));
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  pointer-events: none; max-width: calc(100% - 24px);
}
.foot > * { pointer-events: auto; }
#status, .result {
  background: var(--chrome); border: 1px solid var(--line); border-radius: 6px;
  padding: 0 10px; height: 28px; display: inline-flex; align-items: center; gap: 8px;
  color: var(--muted); font-size: 12px; box-shadow: var(--shadow);
  max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.result { color: var(--text); padding-right: 2px; }
.result[hidden] { display: none; }

/* ---------- detail panel ---------- */

.panel {
  position: fixed; top: 61px; right: 12px; bottom: 12px; width: 340px;
  background: var(--chrome); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow); padding: 12px; display: flex; flex-direction: column; gap: 12px;
  overflow-y: auto; z-index: 4;
}
.panel[hidden] { display: none; }
.panel-head { display: flex; justify-content: space-between; gap: 8px; align-items: flex-start; }
.p-name { font-weight: 500; overflow-wrap: anywhere; }
.p-meta { color: var(--muted); font-size: 12px; }
.p-img { background: var(--bg); border-radius: 6px; display: flex; align-items: center; justify-content: center; min-height: 160px; }
.p-img img { display: block; max-width: 100%; max-height: 52vh; object-fit: contain; }
.p-label { font-size: 12px; font-weight: 500; color: var(--muted); display: block; margin-bottom: 6px; }
.swatches { display: flex; gap: 2px; height: 32px; border-radius: 6px; overflow: hidden; margin-top: -6px; }
.swatch { height: 100%; flex-basis: 0; min-width: 20px; border: 0; border-radius: 0; padding: 0; }
.swatch:hover { outline: 2px solid var(--text); outline-offset: -2px; }
.btn[hidden] { display: none; }

/* ---------- dialog ---------- */

.dlg {
  width: min(480px, calc(100vw - 32px));
  border: 1px solid var(--line); border-radius: 12px; padding: 0;
  background: var(--chrome); color: var(--text); box-shadow: var(--shadow);
}
.dlg::backdrop { background: rgba(0, 0, 0, 0.28); }
.dlg-head { display: flex; justify-content: space-between; align-items: center; padding: 12px 12px 4px 16px; }
.dlg-head h2 { font-size: 15px; font-weight: 600; margin: 0; }
.dlg-sec { padding: 12px 16px; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: 8px; }
.dlg-sec:first-of-type { border-top: 0; }
.dlg-sec .row { flex-wrap: nowrap; }
.dlg-sec .p-label { margin: 0; }
.hint { margin: 0; color: var(--muted); font-size: 12px; }
.dlg-foot { align-items: flex-start; }

/* ---------- phone ---------- */

@media (max-width: 640px) {
  .bar { flex-wrap: wrap; padding: 8px 16px; }
  .search { order: 5; flex-basis: 100%; max-width: none; }
  .brand { margin-right: auto; }
  #fitBtn { display: none; }
  .panel { top: auto; left: 16px; right: 16px; max-height: 70vh; width: auto; }
  .foot { left: 16px; }
}