/* =========================================================
   試卷生圖 STUDIO · Chalkboard × Workshop
   ========================================================= */
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}

:root{
  --ink:#1a1714;
  --ink-soft:#2a2520;
  --wood:#5a3a1f;
  --wood-light:#7a5532;
  --wood-shadow:#2a1a0c;

  --board:#2b3a35;
  --board-deep:#1f2a26;
  --board-edge:#13201c;

  --chalk-white:#f0ebd8;
  --chalk-soft:#cfcab0;
  --chalk-yellow:#f6c560;
  --chalk-red:#e07c5e;
  --chalk-pink:#e8a3b4;
  --chalk-blue:#9cc4d8;

  --paper:#ffffff;
  --paper-deep:#ebe3d0;
  --paper-line:#d8cfb8;
  --paper-ink:#1f1c14;
  --paper-muted:#7a7466;

  --font-ui:"Noto Sans TC","Helvetica Neue",system-ui,sans-serif;
  --font-chalk:"Permanent Marker","ZCOOL QingKe HuangYou","Noto Serif TC",cursive;
  --font-chalk-cjk:"Ma Shan Zheng","Noto Serif TC",serif;
  --font-serif:"Noto Serif TC",Georgia,serif;
  --font-mono:"JetBrains Mono",ui-monospace,monospace;
  --font-hero:"Caveat","Ma Shan Zheng","Noto Serif TC",cursive;
  --font-hero-weight:700;
}

body{
  font-family:var(--font-ui);
  background:#2d2922;
  color:var(--chalk-white);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  min-height:100vh;
  overflow-x:hidden;
}

body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    radial-gradient(circle at 50% 0%, rgba(255,220,160,.04) 0%, transparent 55%),
    radial-gradient(circle at 1px 1px, rgba(255,255,255,.012) 0.5px, transparent 1px);
  background-size:auto, 4px 4px;
}

/* ========== Top status bar ========== */
.statusbar{
  position:relative;z-index:5;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 32px;
  border-bottom:1px solid rgba(255,255,255,.06);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:#8a857a;
  text-transform:uppercase;
}
.statusbar .brand{display:flex;align-items:center;gap:14px}
.statusbar .brand .crest{
  width:22px;height:22px;border:1.5px solid #cfcab0;
  display:grid;place-items:center;font-family:var(--font-serif);font-weight:900;font-size:13px;color:#cfcab0;
  border-radius:3px;line-height:1;
}
.statusbar .brand span{color:#cfcab0;letter-spacing:.18em}
.statusbar .right{display:flex;align-items:center;gap:22px}
.statusbar .pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 11px;border:1px solid rgba(156,228,169,.4);background:rgba(80,180,100,.08);
  color:#9ce7a9;border-radius:3px;
}
.statusbar .pill .ledot{width:6px;height:6px;border-radius:50%;background:#5dbb5d;box-shadow:0 0 8px #5dbb5d}
.statusbar .right a{color:#8a857a;text-decoration:none;border-bottom:1px dashed rgba(138,133,122,.4)}
.statusbar .right a:hover{color:#cfcab0}

/* User auth area in statusbar */
.user-area{display:inline-flex;align-items:center;gap:8px}
.btn-auth{
  background:transparent;border:1px solid rgba(207,202,176,.3);
  color:#8a857a;padding:4px 10px;border-radius:2px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;
  text-transform:uppercase;cursor:pointer;line-height:1;
  transition:all .12s;
}
.btn-auth:hover{color:var(--chalk-yellow);border-color:var(--chalk-yellow)}
#user-info{display:inline-flex;align-items:center;gap:7px}
.user-avatar{
  width:20px;height:20px;border-radius:50%;
  border:1px solid rgba(207,202,176,.4);object-fit:cover;display:block;
}
.user-name{
  color:#cfcab0;font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;
  text-transform:none;max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ========== Hero ========== */
.hero{
  position:relative;z-index:2;
  padding:48px 32px 28px;
  max-width:1480px;margin:0 auto;
}
.hero .kicker{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:#8a857a;
  display:flex;align-items:center;gap:10px;margin-bottom:18px;
}
.hero .kicker::before{content:"";width:28px;height:1px;background:#8a857a;display:inline-block}
.hero h1{
  font-family:var(--font-hero);
  font-weight:var(--font-hero-weight);font-size:54px;line-height:1.02;letter-spacing:-.025em;
  margin:0;max-width:18ch;color:var(--chalk-white);
}
.hero h1 em{
  font-style:normal;color:var(--chalk-yellow);
  font-family:var(--font-serif);font-weight:900;
  display:inline-block;position:relative;
}
.hero h1 em::after{
  content:"";position:absolute;left:-2px;right:-2px;bottom:-2px;height:6px;
  background:rgba(246,197,96,.18);z-index:-1;border-radius:1px;
}
.hero .lede{
  margin-top:18px;font-size:15px;line-height:1.6;color:#a8a293;max-width:54ch;
}
.hero .lede b{color:var(--chalk-yellow);font-weight:700;font-family:var(--font-serif)}

/* ========== Main grid ========== */
.studio{
  position:relative;z-index:1;
  max-width:1480px;margin:0 auto;
  padding:16px 32px 32px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:28px;
  align-items:stretch;
}

/* ========== Chalkboard (left) ========== */
.board-wrap{position:relative}
.board{
  position:relative;
  background:
    radial-gradient(ellipse at 25% 15%, rgba(255,255,255,.05) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 85%, rgba(0,0,0,.18) 0%, transparent 55%),
    linear-gradient(180deg, var(--board) 0%, var(--board-deep) 100%);
  border-radius:6px;
  padding:36px 38px 32px;
  min-height:640px;
  box-shadow:
    inset 0 0 0 1px rgba(0,0,0,.4),
    inset 0 0 80px rgba(0,0,0,.3),
    0 30px 60px -20px rgba(0,0,0,.5),
    0 4px 0 0 var(--wood-shadow);
}
.board::before{
  content:"";position:absolute;inset:-10px;border-radius:10px;z-index:-1;
  background:linear-gradient(180deg, var(--wood-light) 0%, var(--wood) 50%, #4a2e16 100%);
  box-shadow:
    inset 0 0 0 1px rgba(0,0,0,.4),
    inset 0 2px 0 rgba(255,220,180,.15),
    inset 0 -2px 0 rgba(0,0,0,.3);
}
.board::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:80px;border-radius:0 0 6px 6px;
  background:
    radial-gradient(ellipse at 30% 100%, rgba(240,235,216,.05) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(240,235,216,.06) 0%, transparent 50%);
  pointer-events:none;
}

.board .surface{position:relative}
.board .surface::before{
  content:"";position:absolute;inset:-8px;pointer-events:none;opacity:.35;
  background-image:
    repeating-linear-gradient(112deg, rgba(240,235,216,.02) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(38deg, rgba(240,235,216,.018) 0 1px, transparent 1px 7px);
}

.board-title{
  display:flex;align-items:baseline;gap:14px;margin-bottom:6px;position:relative;
  flex-wrap:wrap;
}
.board-title h2{
  font-family:var(--font-chalk);
  font-weight:700;font-size:38px;line-height:1;margin:0;color:var(--chalk-yellow);
  letter-spacing:.01em;flex:1;min-width:0;
}
.board-title .stamp{
  font-family:var(--font-mono);font-size:9px;letter-spacing:.2em;color:var(--chalk-soft);
  padding:3px 7px;border:1px solid rgba(207,202,176,.3);border-radius:2px;
}
.board-sub{
  font-family:var(--font-chalk);font-size:17px;color:var(--chalk-soft);
  margin:0 0 18px;letter-spacing:.02em;
}

/* 風格切換 pill row */
.style-picker{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  margin-bottom:24px;padding-bottom:18px;
  border-bottom:1px dashed rgba(240,235,216,.12);
}
.style-picker .lbl{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--chalk-soft);margin-right:4px;
}
.style-btn{
  font-family:var(--font-chalk);font-size:14px;color:var(--chalk-white);
  padding:5px 11px;border:1.5px solid rgba(207,202,176,.25);border-radius:999px;
  background:transparent;cursor:pointer;line-height:1.2;
  display:inline-flex;align-items:center;gap:5px;
  transition:all .12s;
}
.style-btn:hover{border-color:var(--chalk-white);color:var(--chalk-white)}
.style-btn.active{
  background:rgba(246,197,96,.12);color:var(--chalk-yellow);
  border-color:var(--chalk-yellow);
}
.style-btn .em{font-size:13px;line-height:1}
.style-desc{
  font-family:var(--font-chalk);font-size:12px;color:rgba(207,202,176,.55);
  flex-basis:100%;line-height:1.2;margin-top:-2px;font-style:italic;
}

.fields{display:grid;grid-template-columns:1fr 1fr;gap:18px 22px;position:relative;z-index:1}
.field{display:flex;flex-direction:column;gap:4px}
.field.full{grid-column:span 2}

.field label{
  font-family:var(--font-chalk);font-size:18px;color:var(--chalk-yellow);
  letter-spacing:.03em;display:flex;align-items:center;gap:8px;line-height:1;
  white-space:nowrap;
}
.field label .req{color:var(--chalk-red);font-family:var(--font-chalk);font-size:20px;line-height:0}
.field label .opt{font-size:13px;color:var(--chalk-soft);font-family:var(--font-chalk)}
.field label .icon{
  font-family:var(--font-serif);font-weight:700;font-size:13px;
  width:18px;height:18px;border:1.5px solid var(--chalk-yellow);border-radius:50%;
  display:grid;place-items:center;color:var(--chalk-yellow);line-height:1;
}
.field .input,
.field textarea{
  background:transparent;
  border:none;
  border-bottom:1.5px dashed rgba(240,235,216,.35);
  padding:6px 2px 8px;
  font-family:var(--font-chalk);
  font-size:20px;
  line-height:1.35;
  color:var(--chalk-white);
  outline:none;
  resize:none;
  transition:border-color .15s, color .15s;
  letter-spacing:.01em;
  width:100%;
}
.field textarea{min-height:60px}
.field .input::placeholder,
.field textarea::placeholder{
  color:rgba(207,202,176,.35);font-family:var(--font-chalk);font-size:18px;
}
.field .input:focus,
.field textarea:focus{
  border-bottom-color:var(--chalk-yellow);
  color:#fff8e0;
}
.field .hint{font-family:var(--font-chalk);font-size:13px;color:rgba(207,202,176,.6);margin-top:2px;line-height:1.2}

.examples{
  margin-top:24px;
  padding-top:18px;border-top:1px dashed rgba(240,235,216,.18);
}
.examples .lbl{
  font-family:var(--font-chalk);font-size:15px;color:var(--chalk-soft);margin-right:4px;
}
.examples-tabs{
  display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px;
}
.tab-btn{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;
  padding:5px 11px;border-radius:2px;cursor:pointer;
  background:transparent;color:rgba(207,202,176,.6);
  border:1px solid rgba(207,202,176,.2);
  transition:all .12s;line-height:1;
  display:inline-flex;align-items:center;gap:5px;
}
.tab-btn .em{font-size:13px;line-height:1}
.tab-btn:hover{color:var(--chalk-white);border-color:rgba(240,235,216,.4)}
.tab-btn.active{
  background:rgba(246,197,96,.12);color:var(--chalk-yellow);
  border-color:var(--chalk-yellow);
}
.examples-chips{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
}

/* 本月主題包 — 隨月份自動帶入節慶範例 */
.theme-pack{
  margin-bottom:14px;padding-bottom:14px;
  border-bottom:1px dashed rgba(240,235,216,.18);
}
.theme-pack-head{
  display:flex;align-items:baseline;gap:10px;margin-bottom:8px;flex-wrap:wrap;
}
.theme-pack-head .lbl{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--chalk-soft);
}
.theme-pack-head .theme-name{
  font-family:var(--font-chalk);font-size:18px;color:var(--chalk-pink);
  letter-spacing:.02em;
}
.theme-pack-chips{
  display:flex;flex-wrap:wrap;gap:6px;align-items:center;
}
.theme-chip{
  font-family:var(--font-chalk);font-size:14px;color:var(--chalk-white);
  padding:4px 11px;border:1.5px dashed rgba(232,163,180,.4);border-radius:999px;
  background:rgba(232,163,180,.05);cursor:pointer;transition:all .12s;
  line-height:1.2;white-space:nowrap;
}
.theme-chip:hover{
  border-color:var(--chalk-pink);color:var(--chalk-pink);
  background:rgba(232,163,180,.1);
}

/* 我的範本 — 老師自己存 5-10 個常用 prompt */
.my-templates{
  margin-top:14px;padding-top:14px;
  border-top:1px dashed rgba(240,235,216,.18);
}
.my-templates-head{
  display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap;
}
.my-templates-head .lbl{
  font-family:var(--font-chalk);font-size:16px;color:var(--chalk-yellow);
  letter-spacing:.02em;
}
.btn-save-tpl{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;
  text-transform:uppercase;padding:5px 11px;
  background:transparent;color:var(--chalk-soft);
  border:1px dashed rgba(207,202,176,.4);border-radius:2px;
  cursor:pointer;transition:all .12s;line-height:1;
}
.btn-save-tpl:hover{
  color:var(--chalk-yellow);border-color:var(--chalk-yellow);
  background:rgba(246,197,96,.08);
}
.my-templates-chips{
  display:flex;flex-wrap:wrap;gap:6px;align-items:center;min-height:24px;
}
.tpl-chip{
  font-family:var(--font-chalk);font-size:14px;color:var(--chalk-white);
  padding:4px 8px 4px 12px;border:1.5px solid rgba(246,197,96,.3);border-radius:999px;
  background:rgba(246,197,96,.06);cursor:pointer;line-height:1.2;
  display:inline-flex;align-items:center;gap:8px;
  transition:all .12s;
}
.tpl-chip:hover{border-color:var(--chalk-yellow);background:rgba(246,197,96,.12)}
.tpl-chip .star{color:var(--chalk-yellow);font-size:12px}
.tpl-chip .del{
  background:transparent;border:none;color:var(--chalk-soft);
  font-family:var(--font-serif);font-size:14px;font-weight:900;line-height:1;
  cursor:pointer;padding:0 4px;border-radius:50%;
  opacity:.5;transition:all .12s;
}
.tpl-chip:hover .del{opacity:1}
.tpl-chip .del:hover{color:var(--chalk-red);background:rgba(224,124,94,.15)}
.my-templates-empty{
  font-family:var(--font-chalk);font-size:13px;color:rgba(207,202,176,.5);
  font-style:italic;
}
.chip{
  font-family:var(--font-chalk);font-size:15px;color:var(--chalk-white);
  padding:4px 12px;border:1.5px dashed rgba(240,235,216,.35);border-radius:999px;
  background:transparent;cursor:pointer;transition:all .15s;letter-spacing:.02em;
  line-height:1.2;white-space:nowrap;
}
.chip:hover{
  border-color:var(--chalk-yellow);color:var(--chalk-yellow);
  background:rgba(246,197,96,.06);
}

/* Turnstile widget container */
#turnstile-wrap{margin-top:18px;display:none}
#turnstile-wrap.show{display:block}

.cta{
  margin-top:28px;display:flex;align-items:center;gap:14px;
}
.btn-generate{
  flex:1;
  background:var(--chalk-yellow);
  color:#1a1410;
  font-family:var(--font-ui);
  font-weight:900;font-size:15px;letter-spacing:.04em;
  padding:14px 22px;
  border:none;border-radius:3px;
  cursor:pointer;
  box-shadow:
    0 0 0 1.5px var(--chalk-yellow),
    0 0 0 3px rgba(246,197,96,.2),
    inset 0 -3px 0 rgba(0,0,0,.18);
  transition:transform .08s, box-shadow .15s;
  display:flex;align-items:center;justify-content:center;gap:10px;
}
.btn-generate .star{font-family:var(--font-serif);font-weight:900}
.btn-generate:hover{box-shadow:0 0 0 1.5px var(--chalk-yellow), 0 0 0 5px rgba(246,197,96,.3), inset 0 -3px 0 rgba(0,0,0,.18)}
.btn-generate:active{transform:translateY(1px)}
.btn-generate:disabled{
  background:transparent;color:rgba(240,235,216,.4);
  box-shadow:0 0 0 1.5px rgba(240,235,216,.25);cursor:not-allowed;
}

.btn-clear{
  background:transparent;border:1.5px dashed rgba(240,235,216,.35);
  color:var(--chalk-soft);font-family:var(--font-chalk);font-size:17px;
  padding:11px 18px;border-radius:3px;cursor:pointer;line-height:1;
  transition:all .15s;
}
.btn-clear:hover{border-color:var(--chalk-white);color:var(--chalk-white)}

.quota{
  margin-top:14px;
  font-family:var(--font-chalk);font-size:14px;color:rgba(207,202,176,.7);
  display:flex;align-items:center;gap:8px;
}
.quota .ticks{display:inline-flex;gap:3px}
.quota .tick{width:14px;height:5px;background:rgba(207,202,176,.25);border-radius:1px}
.quota .tick.used{background:var(--chalk-yellow)}

.mode-indicator{
  margin-top:12px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;
  color:var(--chalk-yellow);background:rgba(246,197,96,.08);
  border:1px dashed rgba(246,197,96,.3);border-radius:3px;
  padding:8px 12px;display:none;text-transform:uppercase;line-height:1.5;
}
.mode-indicator.show{display:block}

.eraser{
  position:absolute;right:30px;bottom:20px;
  width:62px;height:22px;border-radius:3px;
  background:linear-gradient(180deg,#3a4a52 0 50%, #c9b88e 50% 100%);
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.3), 0 4px 6px rgba(0,0,0,.3);
  transform:rotate(-4deg);
  opacity:.85;
}
.eraser::after{
  content:"";position:absolute;left:-14px;top:8px;width:22px;height:4px;border-radius:2px;
  background:rgba(240,235,216,.5);transform:rotate(-12deg);
  box-shadow:8px 4px 0 -1px rgba(240,235,216,.3);
}

/* ========== Paper (right) ========== */
.paper-wrap{position:relative;display:flex;flex-direction:column;gap:18px}
.paper{scroll-margin-top:12px;
  position:relative;
  background:var(--paper);
  color:var(--paper-ink);
  border-radius:4px;
  padding:32px 34px 28px;
  flex:1;
  box-shadow:
    0 1px 0 rgba(0,0,0,.05),
    0 30px 60px -20px rgba(0,0,0,.45);
  background-image:
    radial-gradient(circle at 1px 1px, rgba(31,28,20,.06) 0.6px, transparent 1px);
  background-size:8px 8px;
}
.paper::before{
  content:"";position:absolute;top:-10px;left:36px;width:80px;height:22px;
  background:rgba(246,197,96,.5);
  border:1px solid rgba(246,197,96,.7);
  box-shadow:0 2px 6px rgba(0,0,0,.15);
  transform:rotate(-2deg);
  border-radius:1px;
}
.paper::after{
  content:"";position:absolute;top:-10px;right:48px;width:64px;height:22px;
  background:rgba(246,197,96,.5);
  border:1px solid rgba(246,197,96,.7);
  box-shadow:0 2px 6px rgba(0,0,0,.15);
  transform:rotate(3deg);
  border-radius:1px;
}

.paper-head{
  display:flex;align-items:baseline;justify-content:space-between;gap:18px;
  border-bottom:2px solid var(--paper-ink);padding-bottom:14px;margin-bottom:22px;
}
.paper-head h3{
  font-family:var(--font-serif);font-weight:900;font-size:26px;letter-spacing:-.01em;margin:0;
}
.paper-head h3 .sub{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--paper-muted);
  text-transform:uppercase;font-weight:500;margin-left:8px;
}
.paper-head .stat{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--paper-muted);
  text-transform:uppercase;display:flex;align-items:center;gap:7px;
}
.paper-head .stat .d{width:6px;height:6px;border-radius:50%;background:#5dbb5d}
.paper-head .stat .d.idle{background:var(--paper-muted)}
.paper-head .stat .d.busy{background:#e07c5e;animation:pulse 1s infinite}
.paper-head .stat .d.live{background:#5dbb5d}

@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

.output{position:relative;min-height:340px}
.output.empty{padding:0}

/* Loading state */
.output.loading{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-height:340px;text-align:center;
}
.pencil-svg{width:200px;height:140px;margin-bottom:18px}
.pencil-stroke{
  stroke-dasharray:280;stroke-dashoffset:280;
  animation:pencilDraw 2.4s ease-in-out infinite;
}
.pencil-pencil{
  animation:pencilMove 2.4s ease-in-out infinite;
  transform-origin:0 0;
}
@keyframes pencilDraw{
  0%   { stroke-dashoffset:280; }
  60%  { stroke-dashoffset:0; }
  85%  { stroke-dashoffset:0; opacity:1; }
  100% { stroke-dashoffset:0; opacity:0; }
}
@keyframes pencilMove{
  0%   { transform:translate(40px,90px) rotate(-20deg); }
  20%  { transform:translate(70px,68px) rotate(-15deg); }
  40%  { transform:translate(100px,72px) rotate(-12deg); }
  60%  { transform:translate(140px,68px) rotate(-18deg); }
  80%  { transform:translate(160px,50px) rotate(-30deg); }
  100% { transform:translate(40px,90px) rotate(-20deg); opacity:0; }
}
.output.loading p{font-family:var(--font-serif);font-size:16px;font-weight:700;margin:0;color:var(--paper-ink)}
.output.loading .hint{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--paper-muted);text-transform:uppercase;margin-top:8px}

/* Ready state */
.output.ready{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.img-card{
  background:#fff;border:1.5px solid var(--paper-ink);border-radius:2px;
  padding:10px 10px 12px;display:flex;flex-direction:column;gap:8px;
  box-shadow:0 4px 12px -4px rgba(0,0,0,.18);
  cursor:zoom-in;transition:transform .15s;
}
.img-card:hover{transform:translateY(-2px)}
.img-card .frame{
  background:#fff;border:1px solid var(--paper-line);aspect-ratio:1;position:relative;
  overflow:hidden;display:grid;place-items:center;
}
.img-card .frame img{width:100%;height:100%;object-fit:contain;display:block}
.img-card .label{
  display:flex;justify-content:space-between;align-items:center;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--paper-muted);
  text-transform:uppercase;
}
.img-card .label .dl{
  background:var(--paper-ink);color:var(--paper);padding:3px 8px;border-radius:1px;
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.12em;cursor:pointer;
  text-decoration:none;display:inline-block;
}
.img-card .label .dl:hover{background:#000}

/* Inspiration gallery (empty state) */
.gallery{position:relative;min-height:340px}
.gallery-head{
  display:flex;justify-content:space-between;align-items:flex-start;
  gap:18px;margin-bottom:18px;
}
.gallery-head h4{
  font-family:var(--font-serif);font-weight:900;font-size:20px;margin:0 0 4px;
  letter-spacing:-.01em;color:var(--paper-ink);
}
.gallery-head p{
  margin:0;font-size:13px;color:var(--paper-muted);line-height:1.5;max-width:32ch;
}
.gallery-tag{
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.2em;color:var(--paper-muted);
  text-transform:uppercase;border:1px solid var(--paper-line);padding:4px 9px;
  border-radius:2px;background:var(--paper);white-space:nowrap;height:fit-content;
}
.gallery-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;
}
.gallery-card{
  background:#fff;border:1px solid var(--paper-line);border-radius:3px;
  padding:18px 16px;display:flex;flex-direction:column;gap:10px;cursor:pointer;
  text-align:left;font:inherit;color:inherit;transition:transform .12s, box-shadow .12s, border-color .12s;
  position:relative;min-height:120px;
}
.gallery-card:hover{
  transform:translateY(-2px);
  box-shadow:0 6px 14px -4px rgba(0,0,0,.15);
  border-color:var(--paper-ink);
}
.gallery-card .emo{
  font-size:32px;line-height:1;
}
.gallery-card .cap{
  font-family:var(--font-serif);font-weight:700;font-size:15px;color:var(--paper-ink);line-height:1.2;
}
.gallery-card .desc{
  font-size:11.5px;color:var(--paper-muted);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.gallery-card .cta{
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.14em;color:var(--paper-muted);
  text-transform:uppercase;margin-top:auto;display:flex;justify-content:flex-end;
  transition:color .12s;
}
.gallery-card:hover .cta{color:var(--paper-ink)}

/* Prompt accordion */
.prompt-panel{
  background:var(--paper);
  border-radius:4px;
  padding:0;
  box-shadow:0 1px 0 rgba(0,0,0,.05), 0 20px 40px -20px rgba(0,0,0,.4);
}
.prompt-panel summary{
  list-style:none;cursor:pointer;padding:18px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-family:var(--font-serif);font-weight:700;font-size:15px;color:var(--paper-ink);
}
.prompt-panel summary::-webkit-details-marker{display:none}
.prompt-panel summary .lhs{display:flex;align-items:center;gap:10px}
.prompt-panel summary .chev{
  width:18px;height:18px;border:1.5px solid var(--paper-ink);border-radius:50%;
  display:grid;place-items:center;font-family:var(--font-mono);font-size:10px;font-weight:900;
  transition:transform .2s;
}
.prompt-panel[open] summary .chev{transform:rotate(45deg)}
.prompt-panel summary .meta-tag{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--paper-muted);
  text-transform:uppercase;font-weight:500;
}
.prompt-panel .body{padding:0 24px 22px}
.prompt-panel pre{
  background:var(--ink-soft);color:var(--chalk-yellow);
  padding:16px 18px;border-radius:3px;
  font-family:var(--font-mono);font-size:11.5px;line-height:1.65;
  overflow-x:auto;white-space:pre-wrap;word-break:break-word;
  border-left:3px solid var(--chalk-yellow);
  margin:0;
}
.prompt-panel .body .actions{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.prompt-panel .body .action{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;
  padding:7px 14px;border:1.5px solid var(--paper-ink);background:transparent;
  color:var(--paper-ink);cursor:pointer;border-radius:2px;font-weight:600;
  text-decoration:none;display:inline-flex;align-items:center;gap:6px;
}
.prompt-panel .body .action.solid{background:var(--paper-ink);color:var(--paper)}
.prompt-panel .body .action:hover{background:rgba(31,28,20,.08)}
.prompt-panel .body .action.solid:hover{background:#000}

/* =========================================================
   History strip — localStorage 最近 10 筆壓縮縮圖
   ========================================================= */
.history-strip{
  max-width:1480px;margin:0 auto;padding:0 32px 24px;
  position:relative;z-index:1;
}
.history-head{
  display:flex;align-items:baseline;gap:14px;
  margin-bottom:14px;flex-wrap:wrap;
}
.history-head h4{
  font-family:var(--font-chalk);font-size:26px;color:var(--chalk-yellow);
  margin:0;letter-spacing:.02em;line-height:1;
}
.history-head .hint{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;
  color:#8a857a;text-transform:uppercase;flex:1;
}
.btn-clear-history{
  background:transparent;border:1px dashed rgba(207,202,176,.3);
  color:var(--chalk-soft);font-family:var(--font-mono);font-size:10px;
  letter-spacing:.14em;text-transform:uppercase;
  padding:6px 12px;border-radius:2px;cursor:pointer;
}
.btn-clear-history:hover{border-color:var(--chalk-red);color:var(--chalk-red)}

.history-grid{
  display:grid;grid-template-columns:repeat(auto-fill, minmax(180px, 1fr));
  gap:14px;
}
.history-card{
  background:var(--paper);border-radius:3px;overflow:hidden;
  cursor:pointer;border:1px solid var(--paper-line);
  padding:8px;display:flex;flex-direction:column;gap:6px;
  text-align:left;font:inherit;
  transition:transform .12s, box-shadow .12s, border-color .12s;
  position:relative;
}
.history-card:hover{
  transform:translateY(-2px);
  box-shadow:0 6px 14px -4px rgba(0,0,0,.4);
  border-color:var(--chalk-yellow);
}
.history-del{
  position:absolute;top:4px;right:4px;z-index:2;
  width:22px;height:22px;border-radius:50%;
  background:rgba(31,28,20,.55);color:#fff;border:none;
  font-family:var(--font-serif);font-size:14px;font-weight:900;line-height:1;
  cursor:pointer;display:grid;place-items:center;
  opacity:.5;transition:opacity .15s, background .15s;
}
.history-card:hover .history-del{opacity:1}
.history-del:hover{background:var(--chalk-red);opacity:1}
.history-thumbs{
  display:grid;grid-template-columns:1fr 1fr;gap:4px;aspect-ratio:2/1;
}
.history-thumbs img{
  width:100%;height:100%;object-fit:cover;
  background:#fff;border:0.5px solid var(--paper-line);
  display:block;
}
.history-cap{
  display:flex;justify-content:space-between;align-items:center;gap:8px;
  font-size:11px;color:var(--paper-ink);
}
.history-cap .title{
  font-family:var(--font-serif);font-weight:700;font-size:13px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  flex:1;min-width:0;
}
.history-cap .ts{
  font-family:var(--font-mono);color:var(--paper-muted);
  font-size:9.5px;letter-spacing:.08em;white-space:nowrap;
}

/* About strip */
.about-strip{
  max-width:1480px;margin:32px auto 0;padding:0 32px 40px;
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;
}
.about-strip .col{position:relative}
.about-strip h4{
  font-family:var(--font-chalk);font-size:30px;color:var(--chalk-yellow);margin:0 0 14px;letter-spacing:.02em;line-height:1;
}
.about-strip ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}
.about-strip li{
  display:grid;grid-template-columns:auto 1fr;gap:14px;
  font-size:14px;line-height:1.6;color:#cfcab0;
}
.about-strip li b{color:var(--chalk-white);font-weight:500}
.about-strip li .n{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--chalk-yellow);
  background:rgba(246,197,96,.08);border:1px solid rgba(246,197,96,.3);
  padding:3px 7px;border-radius:2px;height:fit-content;
  align-self:start;
}
.specs{
  border:1px dashed rgba(207,202,176,.25);border-radius:4px;padding:22px;
}
.specs .row{
  display:grid;grid-template-columns:90px 1fr;gap:14px;padding:9px 0;
  border-bottom:1px dashed rgba(207,202,176,.18);
  font-size:13px;color:#cfcab0;
}
.specs .row:last-child{border-bottom:none}
.specs .row .k{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:#8a857a;
  text-transform:uppercase;align-self:center;
}
.specs .row .v{font-family:var(--font-ui);color:var(--chalk-white)}

/* Footer */
.footer{
  max-width:1480px;margin:0 auto;padding:24px 32px 40px;
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;color:#6b6655;text-transform:uppercase;
}
.footer a{color:var(--chalk-yellow);text-decoration:none;border-bottom:1px dashed rgba(246,197,96,.3)}
.footer .heart{color:var(--chalk-red);font-family:var(--font-chalk);font-size:14px;letter-spacing:0;text-transform:none}

/* Lightbox */
.lightbox{
  position:fixed;inset:0;background:rgba(10,8,6,.92);z-index:50;
  display:none;padding:24px;
  backdrop-filter:blur(8px);
  overflow-y:auto;             /* card 比視窗高時，整個 backdrop 可上下捲 */
  -webkit-overflow-scrolling:touch;
}
/* flex-column + margin:auto → 小卡片自動垂直置中、大卡片從上對齊讓 overflow-y:auto 接手 */
.lightbox.open{display:flex;flex-direction:column;align-items:center}
.lightbox .lb-card{
  max-width:980px;width:100%;background:var(--paper);border-radius:4px;
  padding:18px;display:flex;flex-direction:column;gap:14px;position:relative;
  box-shadow:0 40px 80px -20px rgba(0,0,0,.6);
  margin:auto 0;               /* 短卡時撐開上下 margin → 垂直置中；長卡時 margin 變 0 → 從頂部開始可捲 */
  flex-shrink:0;               /* 防止被 flex container 壓扁 */
}
.lightbox .lb-frame{
  background:#fff;border:1.5px solid var(--paper-ink);
  display:flex;align-items:center;justify-content:center;overflow:hidden;
  position:relative;        /* 給 .lb-nav 絕對定位用 */
}
.lightbox .lb-frame img{
  max-width:100%;height:auto;display:block;
}
/* 左右切換鈕 — 浮在圖兩側 */
.lb-nav{
  position:absolute;top:50%;transform:translateY(-50%);
  background:rgba(31,28,20,.65);color:#fff;border:none;
  width:44px;height:44px;border-radius:50%;
  font-family:var(--font-serif);font-size:24px;font-weight:900;line-height:1;
  cursor:pointer;z-index:2;
  display:grid;place-items:center;
  transition:background .15s, opacity .15s;
  box-shadow:0 4px 12px rgba(0,0,0,.3);
}
.lb-nav:hover{background:rgba(31,28,20,.9)}
.lb-nav:disabled{opacity:.25;cursor:not-allowed}
.lb-prev{left:8px}
.lb-next{right:8px}
.lb-counter{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  color:var(--paper-muted);text-transform:uppercase;
}
.lightbox .lb-toolbar{display:flex;justify-content:space-between;align-items:center;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--paper-muted);text-transform:uppercase;gap:10px;flex-wrap:wrap}
.lightbox .lb-toolbar .actions{display:flex;gap:8px;flex-wrap:wrap}
.lightbox .lb-toolbar .actions a,
.lightbox .lb-toolbar .actions button{
  background:var(--paper-ink);color:var(--paper);padding:7px 14px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;
  text-decoration:none;border-radius:2px;font-weight:600;border:none;cursor:pointer;
}
.lightbox .lb-toolbar .actions a:hover,
.lightbox .lb-toolbar .actions button:hover{background:#000}
.lightbox .lb-close{
  position:absolute;top:-14px;right:-14px;width:36px;height:36px;border-radius:50%;
  background:var(--paper-ink);color:var(--paper);border:none;font-size:18px;cursor:pointer;
  display:grid;place-items:center;
}

.errorbar{
  background:#3a1f1a;border:1px solid #6b3a2f;color:#f3c4b9;
  padding:12px 16px;border-radius:3px;font-size:13px;display:flex;align-items:center;gap:10px;
  margin-top:14px;
}
.errorbar .x{color:var(--chalk-red);font-family:var(--font-serif);font-weight:900}

/* =========================================================
   Print toolbar（生成完顯示，讓老師填學習單標題後一鍵列印）
   ========================================================= */
.print-toolbar{
  margin-top:18px;padding:14px 16px;
  background:rgba(31,42,38,.04);
  border:1px dashed var(--paper-line);
  border-radius:3px;
  display:flex;gap:10px;align-items:center;flex-wrap:wrap;
}
.print-toolbar .ws-title-input{
  flex:1;min-width:200px;
  padding:9px 12px;border:1px solid var(--paper-line);
  border-radius:2px;background:#fff;
  font-family:var(--font-serif);font-size:14px;color:var(--paper-ink);
  outline:none;
}
.print-toolbar .ws-title-input:focus{border-color:var(--paper-ink)}
.print-toolbar .ws-title-input::placeholder{color:var(--paper-muted);font-size:13px}
.print-toolbar .ws-layout-select{
  padding:9px 28px 9px 12px;border:1px solid var(--paper-line);
  border-radius:2px;background:#fff;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--paper-ink);cursor:pointer;outline:none;
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'><path d='M2 4L5 7L8 4' stroke='%231f1c14' stroke-width='1.5' fill='none'/></svg>");
  background-repeat:no-repeat;background-position:right 8px center;
}
.btn-print{
  background:var(--paper-ink);color:var(--paper);
  border:none;padding:10px 18px;border-radius:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;font-weight:700;cursor:pointer;
  display:inline-flex;align-items:center;gap:7px;
}
.btn-print:hover{background:#000}
.btn-regenerate{
  background:transparent;color:var(--paper-ink);
  border:1.5px solid var(--paper-ink);padding:9px 16px;border-radius:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;font-weight:700;cursor:pointer;
  display:inline-flex;align-items:center;gap:7px;
}
.btn-regenerate:hover{background:var(--chalk-yellow);border-color:var(--chalk-yellow)}
.btn-regenerate:disabled{opacity:.3;cursor:not-allowed;background:transparent}
.print-toolbar .hint{
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.1em;
  color:var(--paper-muted);text-transform:uppercase;
  flex-basis:100%;margin-top:-2px;
}

/* Prompt 編輯模式視覺提示 */
.prompt-panel pre[contenteditable="true"]{
  outline:2px dashed var(--chalk-red);
  cursor:text;
}
.prompt-panel pre[contenteditable="true"]::after{
  content:" ✏️ 編輯中";color:var(--chalk-red);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;
}

/* =========================================================
   列印專用區 — 螢幕完全隱藏，@media print 才顯示
   依 pdf-export-print-best-practice skill：絕不用 jsPDF/html2pdf
   ========================================================= */
.worksheet-print{display:none}

@media print {
  /* 螢幕上的東西全部消失 */
  body > * { display:none !important; }
  .worksheet-print {
    display:block !important;
    margin:0;padding:0;
    background:#fff !important;color:#000;
    font-family:"Noto Serif TC","Songti TC",serif;
  }
  body { margin:0;padding:0;background:#fff !important; }
  @page { size:A4 portrait; margin:1.5cm; }

  .ws-header{
    border-bottom:2pt solid #000;
    padding-bottom:5mm;margin-bottom:8mm;
  }
  .ws-header h1{
    font-size:22pt;font-weight:900;
    margin:0 0 5mm 0;text-align:center;letter-spacing:1pt;
  }
  .ws-meta{
    display:flex;justify-content:space-between;gap:8mm;
    font-size:11pt;font-weight:500;
  }
  .ws-meta span{white-space:nowrap}

  .ws-images{
    display:grid;grid-template-columns:1fr 1fr;
    gap:6mm;margin-bottom:8mm;
  }
  .ws-images figure{
    margin:0;border:1pt solid #000;padding:2mm;
    display:flex;flex-direction:column;
    page-break-inside:avoid;break-inside:avoid;
  }
  .ws-images img{
    width:100%;height:auto;aspect-ratio:1/1;
    object-fit:contain;display:block;
  }
  .ws-images figcaption{
    font-size:8pt;color:#444;text-align:center;
    padding-top:1.5mm;font-weight:500;
  }

  /* === 排版變體（由 .worksheet-print[data-layout] 切換）=== */
  /* 大圖模式：單張塞滿可用寬，限制高 ~14cm 留作答區 */
  .worksheet-print[data-layout="1-big-1"] .ws-images,
  .worksheet-print[data-layout="1-big-2"] .ws-images{
    grid-template-columns:1fr;
    max-width:14cm;margin-left:auto;margin-right:auto;
  }
  .worksheet-print[data-layout="1-big-1"] .ws-images figure:nth-child(2),
  .worksheet-print[data-layout="1-big-2"] .ws-images figure:nth-child(1){
    display:none;
  }
  /* 直疊模式：2 圖縱向，圖小一點 */
  .worksheet-print[data-layout="2-stack"] .ws-images{
    grid-template-columns:1fr;
    max-width:11cm;margin-left:auto;margin-right:auto;
    gap:4mm;
  }

  .ws-notes-title{
    font-size:11pt;font-weight:700;
    margin:0 0 4mm 0;color:#000;
  }
  .ws-line{
    border-bottom:0.5pt solid #999;
    height:0;margin-bottom:7mm;
  }

  .ws-footer{
    position:fixed;bottom:1cm;left:1.5cm;right:1.5cm;
    border-top:0.5pt solid #999;
    padding-top:2mm;text-align:center;
    font-size:8pt;color:#666;
  }
}

/* =========================================================
   Tweaks 面板 — 浮動齒輪鈕 + 右側滑入抽屜
   ========================================================= */
/* 隱形 admin 入口 — 左下角小點，hover 才展開（只有 admin 知道在這） */
.admin-stealth{
  position:fixed;left:8px;bottom:8px;z-index:70;
  width:10px;height:10px;border-radius:50%;
  background:rgba(207,202,176,.18);
  border:none;cursor:pointer;
  text-decoration:none;font-size:0;color:transparent;
  display:inline-flex;align-items:center;justify-content:center;
  overflow:hidden;
  transition:width .25s, height .25s, background .25s, padding .25s,
             border-radius .2s, font-size .15s, color .15s;
}
.admin-stealth:hover,
.admin-stealth:focus{
  width:auto;height:auto;padding:7px 14px;
  border-radius:3px;
  background:rgba(31,42,38,.95);
  color:var(--chalk-yellow);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  font-weight:700;text-transform:uppercase;
  border:1px solid rgba(246,197,96,.5);
  outline:none;
  box-shadow:0 4px 12px rgba(0,0,0,.4);
}
.admin-stealth::before{content:"📊 admin"}

.tweaks-fab{
  position:fixed;right:20px;bottom:20px;z-index:80;
  width:44px;height:44px;border-radius:50%;
  background:rgba(31,42,38,.85);color:var(--chalk-yellow);
  border:1.5px solid rgba(246,197,96,.4);
  font-size:20px;cursor:pointer;
  display:grid;place-items:center;
  box-shadow:0 4px 16px rgba(0,0,0,.4);
  transition:transform .15s, background .15s;
}
.tweaks-fab:hover{transform:rotate(45deg);background:rgba(31,42,38,1)}

.tweaks-backdrop{
  position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:90;
  display:none;backdrop-filter:blur(4px);
}
.tweaks-backdrop.open{display:block}

.tweaks-panel{
  position:fixed;top:0;right:-360px;bottom:0;width:340px;z-index:91;
  background:linear-gradient(180deg, var(--ink-soft) 0%, var(--ink) 100%);
  box-shadow:-10px 0 30px rgba(0,0,0,.5);
  transition:right .25s ease-out;
  overflow-y:auto;
  padding:24px 22px 80px;
  color:var(--chalk-white);font-family:var(--font-ui);
}
.tweaks-panel.open{right:0}

.tweaks-head{
  display:flex;justify-content:space-between;align-items:center;
  padding-bottom:14px;margin-bottom:18px;
  border-bottom:1px dashed rgba(207,202,176,.2);
}
.tweaks-head h3{
  font-family:var(--font-serif);font-weight:900;font-size:18px;margin:0;
  color:var(--chalk-yellow);letter-spacing:.02em;
}
.tweaks-close{
  background:transparent;border:none;color:var(--chalk-soft);
  font-size:22px;cursor:pointer;line-height:1;padding:4px 8px;
  border-radius:50%;
}
.tweaks-close:hover{color:var(--chalk-white);background:rgba(255,255,255,.08)}

.tweaks-group{margin-bottom:22px}
.tweaks-group .group-title{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--chalk-soft);
  margin:0 0 10px 0;
}
.tweaks-row{margin-bottom:14px}
.tweaks-row .row-label{
  font-family:var(--font-ui);font-size:12px;
  color:rgba(207,202,176,.85);margin-bottom:6px;display:block;
}

/* 色票 */
.swatch-row{display:flex;gap:8px}
.swatch{
  width:32px;height:32px;border-radius:50%;cursor:pointer;
  border:2px solid transparent;
  transition:all .12s;
  position:relative;
}
.swatch:hover{transform:scale(1.08)}
.swatch.active{border-color:var(--chalk-white);box-shadow:0 0 0 2px rgba(255,255,255,.15)}

/* 字型選項列表 */
.font-list{
  display:flex;flex-direction:column;gap:5px;
  max-height:280px;overflow-y:auto;
  padding-right:6px;
}
.font-opt{
  padding:8px 11px;background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.06);border-radius:3px;
  cursor:pointer;font-size:14px;color:var(--chalk-white);
  display:flex;justify-content:space-between;align-items:center;
  transition:all .12s;text-align:left;
}
.font-opt:hover{background:rgba(255,255,255,.08);border-color:rgba(246,197,96,.3)}
.font-opt.active{
  background:rgba(246,197,96,.12);
  border-color:var(--chalk-yellow);color:var(--chalk-yellow);
}
.font-opt .check{font-family:var(--font-serif);font-weight:900;font-size:13px}

/* 開關 */
.switch{
  display:flex;justify-content:space-between;align-items:center;
  padding:8px 0;cursor:pointer;
}
.switch-label{font-size:13px;color:rgba(207,202,176,.85)}
.switch-track{
  width:40px;height:22px;border-radius:11px;
  background:rgba(255,255,255,.12);
  position:relative;transition:background .15s;
}
.switch-track::after{
  content:"";position:absolute;top:2px;left:2px;
  width:18px;height:18px;border-radius:50%;
  background:var(--chalk-soft);
  transition:transform .2s;
}
.switch.on .switch-track{background:rgba(246,197,96,.5)}
.switch.on .switch-track::after{
  transform:translateX(18px);background:var(--chalk-yellow);
}

.tweaks-reset{
  margin-top:18px;width:100%;
  background:transparent;color:var(--chalk-soft);
  border:1px dashed rgba(207,202,176,.3);border-radius:3px;
  padding:9px;font-family:var(--font-mono);font-size:10px;
  letter-spacing:.14em;text-transform:uppercase;cursor:pointer;
}
.tweaks-reset:hover{color:var(--chalk-red);border-color:var(--chalk-red)}

/* =========================================================
   批次模式 Modal — CSV 一次生 N 組
   ========================================================= */
.btn-batch{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;
  text-transform:uppercase;padding:5px 11px;
  background:transparent;color:var(--chalk-soft);
  border:1px dashed rgba(207,202,176,.4);border-radius:2px;
  cursor:pointer;transition:all .12s;line-height:1;
}
.btn-batch:hover{
  color:var(--chalk-pink);border-color:var(--chalk-pink);
  background:rgba(232,163,180,.06);
}

.batch-modal{
  position:fixed;inset:0;background:rgba(10,8,6,.92);z-index:60;
  display:none;padding:24px;overflow-y:auto;
  backdrop-filter:blur(8px);
}
.batch-modal.open{display:flex;flex-direction:column;align-items:center}
.batch-card{
  max-width:720px;width:100%;background:var(--paper);border-radius:4px;
  padding:24px 28px 24px;display:flex;flex-direction:column;gap:14px;
  position:relative;margin:auto 0;flex-shrink:0;
  box-shadow:0 40px 80px -20px rgba(0,0,0,.6);
  color:var(--paper-ink);
}
.batch-card h3{
  font-family:var(--font-serif);font-weight:900;font-size:22px;margin:0;
  letter-spacing:-.01em;
}
.batch-card .batch-intro{
  font-size:13px;color:var(--paper-muted);margin:0 0 4px;line-height:1.5;
}
.batch-card .batch-close{
  position:absolute;top:-14px;right:-14px;width:36px;height:36px;border-radius:50%;
  background:var(--paper-ink);color:var(--paper);border:none;font-size:18px;cursor:pointer;
  display:grid;place-items:center;
}

.batch-step{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:12px 14px;background:rgba(31,28,20,.04);
  border:1px dashed var(--paper-line);border-radius:3px;
  font-size:13px;
}
.batch-step .step-num{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  color:var(--paper-muted);text-transform:uppercase;
}
.batch-step input[type="file"]{font-size:12px;font-family:var(--font-mono)}
.batch-step select{
  padding:6px 24px 6px 10px;border:1px solid var(--paper-line);
  border-radius:2px;background:#fff;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.06em;color:var(--paper-ink);outline:none;cursor:pointer;
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'><path d='M2 4L5 7L8 4' stroke='%231f1c14' stroke-width='1.5' fill='none'/></svg>");
  background-repeat:no-repeat;background-position:right 8px center;
}
.batch-sample-link{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;
  color:var(--paper-ink);text-decoration:none;
  border-bottom:1px dashed var(--paper-ink);
}
.batch-sample-link:hover{color:#000}

.batch-preview{
  max-height:200px;overflow-y:auto;
  border:1px solid var(--paper-line);border-radius:3px;
  font-family:var(--font-mono);font-size:11px;
}
.batch-preview-row{
  display:grid;grid-template-columns:24px 1fr 1.6fr 1fr 1fr;gap:8px;
  padding:6px 10px;border-bottom:1px solid var(--paper-line);
  align-items:center;
}
.batch-preview-row:last-child{border-bottom:none}
.batch-preview-row.head{
  background:rgba(31,28,20,.08);font-weight:700;
  font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--paper-muted);
}
.batch-preview-row .cell{
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11.5px;
}
.batch-preview-row .cell.empty{color:rgba(31,28,20,.3);font-style:italic}
.batch-preview-warn{
  background:#fef3c7;color:#92400e;padding:8px 12px;border-radius:3px;
  font-size:12px;border:1px solid #fde68a;
}

.batch-bar{
  width:100%;height:8px;background:var(--paper-line);border-radius:4px;
  overflow:hidden;
}
.batch-bar-fill{
  height:100%;background:var(--paper-ink);width:0;transition:width .3s;
}
.batch-status{
  font-family:var(--font-mono);font-size:11px;color:var(--paper-muted);
  text-align:center;letter-spacing:.08em;text-transform:uppercase;
}

.batch-results{display:flex;flex-direction:column;gap:6px;max-height:300px;overflow-y:auto}
.batch-result-row{
  display:grid;grid-template-columns:auto 1fr auto;gap:10px;
  padding:8px 12px;background:rgba(31,28,20,.03);border-radius:3px;
  align-items:center;font-size:12px;
}
.batch-result-row .status-ok{color:#059669;font-family:var(--font-serif);font-weight:900}
.batch-result-row .status-fail{color:var(--chalk-red);font-family:var(--font-serif);font-weight:900}
.batch-result-row .label{font-family:var(--font-serif);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.batch-result-row .dl-group{display:flex;gap:4px}
.batch-result-row .dl{
  background:var(--paper-ink);color:var(--paper);padding:3px 9px;border-radius:1px;
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.1em;cursor:pointer;
  text-decoration:none;
}
.batch-result-row .dl:hover{background:#000}
.batch-result-row .err-msg{
  color:var(--chalk-red);font-size:11px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

.batch-actions{
  display:flex;gap:10px;justify-content:flex-end;
  padding-top:8px;border-top:1px dashed var(--paper-line);
}

/* Toast — 生成成功小提示，bottom 90px 避免跟 SW 更新 banner（bottom 20px）打架 */
.toast{
  position:fixed;bottom:90px;left:50%;transform:translateX(-50%);
  background:rgba(31,42,38,.96);color:var(--chalk-yellow);
  padding:12px 22px;border-radius:3px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.08em;
  border:1px solid rgba(246,197,96,.35);
  box-shadow:0 10px 30px rgba(0,0,0,.45), inset 0 0 0 1px rgba(0,0,0,.3);
  z-index:100;white-space:nowrap;
  animation:toastIn .25s ease-out, toastOut .35s ease-in 1.15s forwards;
  display:flex;align-items:center;gap:8px;
}
.toast .ok{color:#9ce7a9;font-family:var(--font-serif);font-weight:900;font-size:14px}
@keyframes toastIn  { from{opacity:0;transform:translate(-50%,12px)} to{opacity:1;transform:translate(-50%,0)} }
@keyframes toastOut { to{opacity:0;transform:translate(-50%,-6px)} }

/* Responsive */
@media (max-width:1100px){
  .studio{grid-template-columns:1fr;gap:24px}
  .about-strip{grid-template-columns:1fr}
}
@media (max-width:680px){
  .hero{padding:32px 20px 18px}
  .hero h1{font-size:38px}
  .hero h1 em{font-size:44px}
  .studio{padding:12px 16px 24px;gap:18px}
  .board{padding:24px 22px 26px;min-height:auto}
  .fields{grid-template-columns:1fr;gap:16px}
  .field.full{grid-column:span 1}
  .paper{padding:24px 22px 22px}
  .output.ready{grid-template-columns:1fr}
  .about-strip{padding:0 16px 30px;gap:22px}
  .footer{padding:18px 16px 28px;flex-direction:column;align-items:flex-start;gap:10px}
  .eraser{display:none}
  .statusbar{padding:14px 16px;font-size:10px}
  .statusbar .right{gap:12px}
}