/* ============================================================
   LINE 貼圖快手 — 樣式
   設計：暖中性底 + 珊瑚→琥珀主色、大圓角、柔和陰影、克制的動效
   ============================================================ */
:root {
  --bg: #f7f4ef;
  --surface: #ffffff;
  --surface-2: #fbf9f6;
  --ink: #1f1b16;
  --ink-2: #4a423a;
  --muted: #7a7167;
  --line: #e8e2d9;
  --line-strong: #d8d0c4;
  --accent-1: #ff6b4a;
  --accent-2: #ffb020;
  --accent-ink: #ffffff;
  --ok: #10b981;
  --warn: #f59e0b;
  --err: #ef4444;
  --r-xl: 26px;
  --r-lg: 18px;
  --r-md: 12px;
  --r-sm: 9px;
  --sh-1: 0 1px 2px rgba(31, 27, 22, .05), 0 10px 30px -18px rgba(31, 27, 22, .35);
  --sh-2: 0 2px 6px rgba(31, 27, 22, .07), 0 22px 48px -22px rgba(31, 27, 22, .38);
  --ff: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, -apple-system, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14120f;
    --surface: #1e1b18;
    --surface-2: #262220;
    --ink: #f6f2ed;
    --ink-2: #ddd5cc;
    --muted: #a89e93;
    --line: #322d28;
    --line-strong: #443d36;
    --sh-1: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px -20px rgba(0, 0, 0, .8);
    --sh-2: 0 2px 8px rgba(0, 0, 0, .45), 0 26px 60px -26px rgba(0, 0, 0, .85);
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--ff);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {                                  /* 極淡的主色光暈，讓版面不扁平 */
  content: "";
  position: fixed;
  inset: -20% -10% auto -10%;
  height: 60vh;
  background: radial-gradient(60% 60% at 20% 0%, rgba(255, 107, 74, .10), transparent 70%),
              radial-gradient(50% 50% at 85% 5%, rgba(255, 176, 32, .12), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

a { color: inherit; }

/* ---------- 版面 ---------- */
.wrap { position: relative; z-index: 1; max-width: 1320px; margin: 0 auto; padding: 22px 22px 60px; }

.topbar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 14px 20px; margin-bottom: 22px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-1);
  backdrop-filter: saturate(140%) blur(8px);
}

.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-text { min-width: 0; }

.brand-mark {
  width: 42px; height: 42px; flex: none; border-radius: 13px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  display: grid; place-items: center;
  box-shadow: 0 6px 18px -6px rgba(255, 107, 74, .7);
}
.brand-mark svg { width: 22px; height: 22px; }

.brand-text h1 { margin: 0; font-size: 19px; letter-spacing: .3px; white-space: nowrap; }
.brand-text p { margin: 1px 0 0; font-size: 12.5px; color: var(--muted); }

.topbar-meta { margin-left: auto; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.pill-meta {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 13px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--line);
  font-size: 12.5px; color: var(--ink-2); white-space: nowrap;
}
.pill-meta b { font-weight: 700; }

.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); flex: none; }
.dot.off { background: var(--err); }

.app { display: grid; grid-template-columns: minmax(330px, 400px) 1fr; gap: 22px; align-items: start; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-1);
  padding: 22px;
}
.card + .card { margin-top: 18px; }

.card-title { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; font-size: 16px; }

.step-no {
  width: 26px; height: 26px; flex: none; border-radius: 9px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: var(--accent-ink); font-size: 13.5px; font-weight: 800;
}
.step-no.done { background: var(--ok); }
.step-hint { margin-left: auto; font-size: 12px; color: var(--muted); font-weight: 400; }

/* ---------- 表單元件 ---------- */
.field { margin-bottom: 17px; }
.label { display: block; font-size: 13px; font-weight: 700; color: var(--ink-2); margin-bottom: 9px; }
.label small { font-weight: 400; color: var(--muted); margin-left: 6px; }

input[type=text], textarea, select {
  width: 100%; font-family: inherit; font-size: 14px; color: var(--ink);
  background: var(--surface-2); border: 1.5px solid var(--line);
  border-radius: var(--r-md); padding: 11px 13px; outline: none;
  transition: border-color .16s, box-shadow .16s, background .16s;
}
textarea { resize: vertical; min-height: 74px; line-height: 1.6; }
input[type=text]:focus, textarea:focus, select:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-1) 18%, transparent);
  background: var(--surface);
}
input::placeholder, textarea::placeholder { color: var(--muted); opacity: .8; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: inherit; font-size: 13px; font-weight: 600; color: var(--ink-2);
  background: var(--surface-2); border: 1.5px solid var(--line);
  border-radius: 999px; padding: 7px 14px; cursor: pointer;
  transition: transform .14s, border-color .16s, background .16s, color .16s;
}
.chip:hover { transform: translateY(-1px); border-color: var(--line-strong); }
.chip[aria-pressed=true] {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  border-color: transparent; color: var(--accent-ink);
  box-shadow: 0 6px 16px -8px rgba(255, 107, 74, .9);
}

.seg { display: flex; gap: 6px; background: var(--surface-2); border: 1.5px solid var(--line);
       border-radius: 999px; padding: 4px; }
.seg button {
  flex: 1 1 0; min-width: 0; white-space: nowrap;
  font-family: inherit; font-size: 13px; font-weight: 600; color: var(--ink-2);
  background: transparent; border: 0; border-radius: 999px; padding: 7px 8px; cursor: pointer;
  transition: background .16s, color .16s;
}
.seg button[aria-pressed=true] {
  background: color-mix(in srgb, var(--accent-1) 14%, var(--surface));
  color: var(--accent-1); font-weight: 800; box-shadow: inset 0 0 0 1.5px color-mix(in srgb, var(--accent-1) 45%, transparent);
}

.slider-row { display: flex; align-items: center; gap: 12px; }
input[type=range] {
  -webkit-appearance: none; appearance: none; flex: 1; height: 5px; border-radius: 3px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2)); outline: none;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%;
  background: var(--surface); border: 2.5px solid var(--accent-1);
  box-shadow: 0 2px 8px -2px rgba(31, 27, 22, .5); cursor: pointer; transition: transform .12s;
}
input[type=range]::-webkit-slider-thumb:active { transform: scale(1.15); }
.val {
  min-width: 52px; text-align: center; font-size: 12.5px; font-weight: 700;
  background: var(--surface-2); border: 1px solid var(--line); border-radius: 8px; padding: 3px 6px;
}

.btn {
  font-family: inherit; font-size: 14.5px; font-weight: 700; cursor: pointer;
  border: 0; border-radius: var(--r-md); padding: 13px 18px;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  transition: transform .14s, box-shadow .18s, filter .18s, background .18s;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary {
  color: var(--accent-ink); width: 100%;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  box-shadow: 0 10px 24px -12px rgba(255, 107, 74, .95);
}
.btn-primary:hover:not(:disabled) { transform: translateY(-1.5px); box-shadow: 0 16px 32px -14px rgba(255, 107, 74, 1); }
.btn-primary:active:not(:disabled) { transform: translateY(0) scale(.995); }
.btn-ghost {
  background: var(--surface-2); color: var(--ink-2); border: 1.5px solid var(--line);
}
.btn-ghost:hover:not(:disabled) { border-color: var(--line-strong); transform: translateY(-1px); }
.btn-sm { font-size: 13px; padding: 9px 13px; border-radius: var(--r-sm); }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

.hint { font-size: 12.5px; color: var(--muted); margin: 9px 0 0; }

/* 生成中：動畫做在文字本身 */
.gen-label { display: inline-flex; align-items: center; gap: 8px; }
.generating .gen-text {
  background: linear-gradient(90deg, rgba(255,255,255,.45), #fff, rgba(255,255,255,.45));
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: sweep 1.15s linear infinite;
}
@keyframes sweep { from { background-position: 120% 0; } to { background-position: -120% 0; } }

.spinner {
  width: 15px; height: 15px; border-radius: 50%; flex: none;
  border: 2.2px solid rgba(255, 255, 255, .38); border-top-color: #fff;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 舞台 ---------- */
.stage-head {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 16px;
}
.stage-head h2 { margin: 0; font-size: 16px; }
.stage-head .grow { flex: 1; }

.drop {
  border: 2px dashed var(--line-strong); border-radius: var(--r-lg);
  background: var(--surface-2); padding: 46px 22px; text-align: center; cursor: pointer;
  transition: border-color .18s, background .18s, transform .18s;
}
.drop:hover, .drop.over {
  border-color: var(--accent-1); background: color-mix(in srgb, var(--accent-1) 7%, var(--surface-2));
  transform: translateY(-2px);
}
.drop-ico { font-size: 30px; line-height: 1; margin-bottom: 10px; }
.drop b { font-size: 15px; }
.drop p { margin: 6px 0 0; font-size: 12.5px; color: var(--muted); }

.canvas-wrap { position: relative; border-radius: var(--r-lg); overflow: hidden;
               background: repeating-conic-gradient(#ececec 0% 25%, #fff 0% 50%) 50% / 22px 22px; }
.canvas-wrap canvas { display: block; width: 100%; height: auto; }

.result-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(108px, 1fr)); gap: 12px; }
.thumb {
  position: relative; border-radius: var(--r-md); overflow: hidden;
  border: 1px solid var(--line); background: var(--surface-2);
  aspect-ratio: 1; animation: pop .34s cubic-bezier(.2,.9,.3,1.2) both;
}
@keyframes pop { from { opacity: 0; transform: translateY(8px) scale(.94); } to { opacity: 1; transform: none; } }
.thumb img { width: 100%; height: 100%; object-fit: contain; display: block; }
.thumb .no {
  position: absolute; left: 6px; top: 6px; font-size: 11px; font-weight: 700;
  background: rgba(31, 27, 22, .72); color: #fff; border-radius: 6px; padding: 1px 6px;
}
.thumb .dl {
  position: absolute; right: 6px; bottom: 6px; opacity: 0; transform: translateY(4px);
  transition: opacity .16s, transform .16s; font-size: 11.5px; padding: 4px 9px;
  border-radius: 7px; border: 0; cursor: pointer; color: var(--ink);
  background: rgba(255, 255, 255, .94); box-shadow: var(--sh-1);
}
.thumb:hover .dl, .thumb:focus-within .dl { opacity: 1; transform: none; }
.thumb.flagged { outline: 2px solid var(--warn); outline-offset: -2px; }

.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.checks li { display: flex; align-items: flex-start; gap: 9px; font-size: 13.5px; color: var(--ink-2); }
.badge {
  flex: none; min-width: 46px; text-align: center; font-size: 11.5px; font-weight: 800;
  border-radius: 7px; padding: 2px 7px;
}
.badge.ok { color: #05604a; background: rgba(16, 185, 129, .16); }
.badge.no { color: #7c2d12; background: rgba(245, 158, 11, .2); }
.badge.err { color: #7f1d1d; background: rgba(239, 68, 68, .16); }

.toast {
  margin-top: 14px; font-size: 13.5px; border-radius: var(--r-md); padding: 11px 14px;
  display: none; line-height: 1.6;
}
.toast.show { display: block; animation: pop .3s ease both; }
.toast.info { background: color-mix(in srgb, var(--accent-1) 9%, var(--surface)); border: 1px solid color-mix(in srgb, var(--accent-1) 26%, transparent); }
.toast.ok { background: rgba(16, 185, 129, .1); border: 1px solid rgba(16, 185, 129, .3); }
.toast.err { background: rgba(239, 68, 68, .09); border: 1px solid rgba(239, 68, 68, .3); }

.empty { text-align: center; color: var(--muted); padding: 34px 12px; font-size: 13.5px; }

.skeleton { height: 200px; border-radius: var(--r-lg); background:
  linear-gradient(100deg, var(--surface-2) 30%, color-mix(in srgb, var(--ink) 5%, var(--surface-2)) 50%, var(--surface-2) 70%);
  background-size: 220% 100%; animation: shimmer 1.4s linear infinite; }
@keyframes shimmer { from { background-position: 130% 0; } to { background-position: -30% 0; } }

.foot { margin-top: 30px; text-align: center; font-size: 12px; color: var(--muted); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
           clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent-1) 55%, transparent); outline-offset: 2px; }

@media (max-width: 1020px) {
  .app { grid-template-columns: 1fr; }
  .wrap { padding: 16px 14px 44px; }
  .card { padding: 18px; border-radius: var(--r-lg); }
  /* 手機：加大可點區域與間距，避免誤觸 */
  .chips { gap: 10px; }
  .chip { padding: 9px 15px; }
  .seg button { padding: 10px 12px; }
}

@media (max-width: 620px) {
  .topbar { padding: 12px 14px; gap: 10px; }
  .brand-text h1 { font-size: 17px; }
  .brand-text p { font-size: 12px; }
  .topbar-meta { margin-left: 0; width: 100%; }
  .pill-meta { font-size: 12px; padding: 5px 11px; }
  .step-hint { display: none; }          /* 手機版不需要這行說明，讓標題乾淨 */
  .card-title { margin-bottom: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}