/* pricetag — mobile-first
   Palette: undyed stone base, indigo (dye vat) accent, chalk-white badges.
   Typography: system CJK fonts only (no web fonts, by spec). */

:root {
  --paper: #EFF0EB;
  --card: #FFFFFF;
  --ink: #1B2233;
  --ink-2: #5E6573;
  --ink-3: #9AA0AA;
  --thread: #D3D6CE;
  --indigo: #2E4A86;
  --indigo-deep: #23396A;
  --indigo-soft: #E4EAF6;
  --chalk: #FAF8EC;
  --rust: #A84A3F;
  --rust-soft: #F6E6E3;
  --ok: #2F6B4F;
  --radius: 12px;
  --radius-sm: 8px;
  --tap: 46px;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);
  --bar-h: 64px;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior-y: none;
}
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; padding: 0; }
button:disabled { opacity: .45; cursor: default; }
:focus-visible { outline: 3px solid var(--indigo); outline-offset: 2px; }
img { display: block; }
.hidden { display: none !important; }

/* ---------- login ---------- */
.login {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login form { width: min(360px, 100%); display: grid; gap: 14px; }
.login h1 { margin: 0 0 4px; font-size: 32px; font-weight: 700; letter-spacing: -0.01em; }
.login p { margin: 0 0 12px; color: var(--ink-2); }
.field {
  height: 52px; padding: 0 16px; width: 100%;
  border: 1.5px solid var(--thread); border-radius: var(--radius);
  background: var(--card);
}
.field:focus { border-color: var(--indigo); outline: none; }
.err { color: var(--rust); min-height: 1.4em; margin: 0; }

/* ---------- buttons ---------- */
.btn {
  height: var(--tap); padding: 0 18px; border-radius: var(--radius);
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font-weight: 600; white-space: nowrap;
  background: var(--card); border: 1.5px solid var(--thread);
}
.btn.primary { background: var(--indigo); color: #fff; border-color: var(--indigo); }
.btn.primary:active { background: var(--indigo-deep); }
.btn.danger { color: var(--rust); border-color: var(--rust-soft); background: var(--rust-soft); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--indigo); }
.btn.block { width: 100%; }
.btn.lg { height: 54px; font-size: 17px; }

/* ---------- header / tabs ---------- */
.top {
  position: sticky; top: 0; z-index: 5;
  background: var(--paper);
  padding: calc(8px + var(--safe-t)) 14px 0;
  border-bottom: 1px solid var(--thread);
}
.top-row { display: flex; align-items: center; justify-content: space-between; height: 44px; }
.brand { font-weight: 700; font-size: 20px; letter-spacing: -0.01em; }
.brand small { color: var(--ink-3); font-weight: 500; font-size: 13px; margin-left: 8px; }
.iconbtn { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; color: var(--ink-2); }
.iconbtn:active { background: var(--indigo-soft); }

.tabs { display: flex; gap: 2px; margin-top: 4px; }
.tab {
  flex: 1; height: 42px; display: flex; align-items: center; justify-content: center; gap: 6px;
  border-bottom: 3px solid transparent; color: var(--ink-2); font-weight: 600; font-size: 15px;
  max-width: 180px; /* ponytail: 寬螢幕不要一個分頁佔 800px */
}
.tab .n { font-size: 12px; font-weight: 600; color: var(--ink-3); background: var(--card); border: 1px solid var(--thread);
  min-width: 20px; height: 20px; padding: 0 6px; border-radius: 10px; display: inline-grid; place-items: center; }
.tab.on { color: var(--indigo); border-bottom-color: var(--indigo); }
.tab.on .n { color: var(--indigo); border-color: var(--indigo-soft); background: var(--indigo-soft); }

/* ---------- banners ---------- */
.banner {
  margin: 10px auto 0; max-width: min(760px, calc(100% - 28px)); padding: 10px 12px 10px 14px;
  background: var(--chalk); border: 1px solid #E7E0BF; border-radius: var(--radius);
  display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 15px;
}
.banner.busy { background: var(--indigo-soft); border-color: #CBD6EE; }
.banner .btn { height: 36px; padding: 0 12px; font-size: 14px; }

/* ---------- selection bar ---------- */
.selbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px 6px; color: var(--ink-2); font-size: 15px;
}
.selbar b { color: var(--ink); }
.selbar .btn { height: 34px; padding: 0 12px; font-size: 14px; }

/* ---------- grid ---------- */
.grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px;
  padding: 4px 3px calc(var(--bar-h) + 90px + var(--safe-b));
}
/* ponytail: clamp 讓格子下限隨視窗連續長大（130→170px），欄數自動補；
   用第二個斷點的話會在邊界上一次掉兩欄，這樣沒有跳格 */
@media (min-width: 560px) { .grid { grid-template-columns: repeat(auto-fill, minmax(clamp(130px, 11vw, 170px), 1fr)); } }

.cell {
  position: relative; aspect-ratio: 1; background: var(--card);
  overflow: hidden; border-radius: 4px; padding: 0; width: 100%;
}
.cell img { width: 100%; height: 100%; object-fit: cover; }
.cell .tag {
  position: absolute; right: 6px; bottom: 6px;
  background: rgba(0,0,0,.6); color: #fff; font-size: 12px; font-weight: 700;
  padding: 3px 7px; border-radius: 6px; line-height: 1.2;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.45);
  max-width: calc(100% - 12px); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.cell .tag.empty { background: rgba(255,255,255,.85); color: var(--ink-3); font-weight: 600; box-shadow: none; }
.cell .check {
  position: absolute; left: 6px; top: 6px; width: 24px; height: 24px; border-radius: 50%;
  background: rgba(255,255,255,.85); border: 1.5px solid rgba(0,0,0,.25);
  display: grid; place-items: center; color: transparent;
}
/* the one bold thing: a chalk-line selection */
.cell.sel::after {
  content: ""; position: absolute; inset: 0; border: 4px solid var(--indigo); border-radius: 4px; pointer-events: none;
}
.cell.sel .check { background: var(--indigo); border-color: var(--indigo); color: #fff; }
.cell.sel img { transform: scale(.94); transition: transform .12s ease-out; }
@media (prefers-reduced-motion: reduce) { .cell.sel img { transition: none; } }

.empty {
  padding: 56px 28px; text-align: center; color: var(--ink-2);
}
.empty h2 { margin: 0 0 8px; font-size: 20px; color: var(--ink); }
.empty p { margin: 0; }
.more { display: grid; place-items: center; padding: 8px 0 24px; }

/* ---------- bottom bar ---------- */
.bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 6;
  background: rgba(239,240,235,.92); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-top: 1px solid var(--thread);
  padding: 9px 12px calc(9px + var(--safe-b));
  display: flex; gap: 8px; justify-content: center;
}
.bar .btn { flex: 1; height: var(--tap); padding: 0 8px; max-width: 170px; }
.fab {
  position: fixed; right: 16px; bottom: calc(var(--bar-h) + 14px + var(--safe-b)); z-index: 6;
  width: 58px; height: 58px; border-radius: 50%;
  background: var(--indigo); color: #fff; font-size: 30px; font-weight: 400; line-height: 1;
  display: grid; place-items: center;
  box-shadow: 0 6px 18px rgba(35,57,106,.35);
}
.fab:active { background: var(--indigo-deep); }

/* ---------- sheets ---------- */
.scrim {
  position: fixed; inset: 0; z-index: 20; background: rgba(27,34,51,.45);
}
.sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 21;
  /* ponytail: left/right:0 + margin auto 就置中，不用 transform 或包一層 wrapper */
  width: min(560px, 100%); margin-inline: auto;
  background: var(--card); border-radius: 18px 18px 0 0;
  max-height: 92dvh; overflow-y: auto; -webkit-overflow-scrolling: touch;
  padding: 8px 16px calc(16px + var(--safe-b));
  box-shadow: 0 -8px 30px rgba(27,34,51,.18);
}
.sheet .grip { width: 40px; height: 4px; border-radius: 2px; background: var(--thread); margin: 4px auto 12px; }
.sheet h2 { margin: 0 0 4px; font-size: 20px; }
.sheet .sub { margin: 0 0 14px; color: var(--ink-2); font-size: 15px; }
.sheet .actions { display: grid; gap: 10px; margin-top: 18px; }

.row { margin-bottom: 16px; }
.row > label, .row .lab { display: block; font-weight: 600; margin-bottom: 8px; }
.row .lab span { color: var(--ink-3); font-weight: 500; font-size: 14px; margin-left: 6px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  height: 40px; padding: 0 14px; border-radius: 20px;
  background: var(--paper); border: 1.5px solid var(--thread); font-weight: 600;
  display: inline-flex; align-items: center; gap: 4px;
}
.chip.on { background: var(--indigo); color: #fff; border-color: var(--indigo); }
.chip.custom { background: var(--card); border-style: dashed; }
.chip.custom.on { border-style: solid; }
.seg { display: inline-flex; border: 1.5px solid var(--thread); border-radius: 10px; overflow: hidden; margin-bottom: 10px; }
.seg button { height: 36px; padding: 0 16px; font-weight: 600; background: var(--paper); color: var(--ink-2); }
.seg button.on { background: var(--indigo); color: #fff; }
.inline-input { display: flex; gap: 8px; margin-top: 8px; }
.inline-input .field { height: 44px; }
textarea.field { height: auto; min-height: 88px; padding: 12px 14px; resize: vertical; }
input[type=range] { width: 100%; accent-color: var(--indigo); height: var(--tap); }

.preview { background: var(--paper); border-radius: var(--radius); padding: 8px; }
/* ponytail: object-fit 讓 max-height 生效時圖等比縮，不會被壓扁 */
.preview canvas { width: 100%; height: auto; max-height: 52dvh; object-fit: contain;
  display: block; border-radius: 6px; background: var(--paper); }
.preview .cap { font-size: 13px; color: var(--ink-3); margin: 6px 2px 0; }

.progress { height: 6px; border-radius: 3px; background: var(--thread); overflow: hidden; margin: 10px 0; }
.progress i { display: block; height: 100%; background: var(--indigo); transition: width .2s; }

.note { color: var(--ink-2); font-size: 14px; margin: 8px 0 0; }
.divider { height: 1px; background: var(--thread); margin: 18px 0; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: calc(var(--bar-h) + 24px + var(--safe-b)); transform: translateX(-50%);
  z-index: 30; background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 10px;
  font-size: 15px; max-width: calc(100% - 32px); box-shadow: 0 6px 20px rgba(0,0,0,.25);
}
.toast.err { background: var(--rust); }