:root{
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --line:#E9E6DC;
  --text:#111827;
  --muted:#6B7280;
  --muted2:#4B5563;
  --accent:#2563EB;
  --accent2:#10B981;
  --shadow: 0 10px 30px rgba(17,24,39,.08);
  --r:18px;

  --pill-bg: rgba(255,255,255,.75);
  --pill-text: var(--muted2);
  --input-bg: rgba(255,255,255,.92);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans TC","Microsoft JhengHei", Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 12% 8%, rgba(37,99,235,.08), transparent 55%),
    radial-gradient(900px 520px at 86% 16%, rgba(16,185,129,.08), transparent 55%),
    var(--bg);
  min-height:100vh;
}
a{color:inherit}
.wrap{max-width:1100px;margin:0 auto;padding:14px 14px 64px}
.nav{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;position:sticky;top:0;z-index:10;padding:10px 0;backdrop-filter:saturate(140%) blur(10px)}
.brand{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.75);box-shadow:var(--shadow)}
.dot{width:10px;height:10px;border-radius:999px;background:var(--accent);box-shadow:0 0 0 5px rgba(37,99,235,.10)}
.navbtns{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:11px 13px;border-radius:14px;border:1px solid var(--line);background:var(--card);color:var(--text);cursor:pointer;text-decoration:none;box-shadow:0 6px 18px rgba(17,24,39,.06)}
.btn:hover{border-color:rgba(37,99,235,.35);box-shadow:0 0 0 6px rgba(37,99,235,.08)}
.btn.primary{background:linear-gradient(180deg, rgba(37,99,235,.14), rgba(255,255,255,.92));border-color:rgba(37,99,235,.30)}
.btn.primary:hover{border-color:rgba(37,99,235,.55)}
.pill{display:inline-flex;gap:8px;align-items:center;padding:6px 10px;border-radius:999px;border:1px solid var(--line);background:var(--pill-bg);font-size:12px;color:var(--pill-text)}
.kbd{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;font-size:12px;color:var(--muted2);padding:4px 8px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.80)}
.searchRow{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:10px}
.search{flex:1;min-width:220px;padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.90);outline:none;box-shadow:var(--shadow)}
.hero{border:1px solid var(--line);border-radius:var(--r);background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.70));box-shadow:var(--shadow);padding:14px}
h1{font-size:clamp(22px,4.2vw,34px);margin:6px 0 8px}
.sub{color:var(--muted);font-size:14px;line-height:1.8;margin:0}
.grid{display:grid;grid-template-columns:1fr;gap:12px;margin-top:12px}
@media(min-width:980px){.grid{grid-template-columns:1fr .9fr}}
.card{border:1px solid var(--line);border-radius:var(--r);background:var(--card);box-shadow:var(--shadow);padding:14px}
.hr{height:1px;background:var(--line);margin:12px 0}
.muted{color:var(--muted);font-size:12px;line-height:1.7}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.bookGrid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(min-width:700px){.bookGrid{grid-template-columns:repeat(4,1fr)}}
@media(min-width:1040px){.bookGrid{grid-template-columns:repeat(6,1fr)}}
.book{border:1px solid var(--line);border-radius:16px;background:var(--card);overflow:hidden;text-decoration:none;display:flex;flex-direction:column}
.book:hover{border-color:rgba(37,99,235,.35);box-shadow:0 12px 30px rgba(17,24,39,.10)}
.cover{aspect-ratio:3/4;display:flex;align-items:flex-end;justify-content:space-between;padding:10px;border-bottom:1px solid var(--line)}
.cover .emoji{font-size:34px}
.cover .tag{font-size:11px;color:var(--pill-text);padding:4px 8px;border-radius:999px;border:1px solid var(--line);background:var(--pill-bg)}
.cover.urban{background:radial-gradient(200px 160px at 30% 20%, rgba(37,99,235,.12), transparent 60%), linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,.65))}
.cover.cyber{background:radial-gradient(220px 160px at 30% 20%, rgba(236,72,153,.10), transparent 60%), radial-gradient(220px 160px at 70% 80%, rgba(14,165,233,.10), transparent 60%), linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,.62))}
.cover.dark{background:radial-gradient(220px 160px at 30% 20%, rgba(147,51,234,.10), transparent 60%), radial-gradient(220px 160px at 70% 80%, rgba(245,158,11,.08), transparent 60%), linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,.62))}
.bookBody{padding:10px}
.bookTitle{font-weight:800;font-size:13px;line-height:1.35}
.bookMeta{margin-top:6px;display:flex;gap:8px;flex-wrap:wrap}
.badge{font-size:11px;color:var(--muted2);padding:4px 8px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.80)}
.disabled{opacity:.6}
.choice{display:block;text-decoration:none;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.88);padding:12px}
.choice:hover{border-color:rgba(37,99,235,.35)}
.choice .t{font-weight:800}
.choice .d{color:var(--muted);font-size:12px;line-height:1.6;margin-top:4px}
.unknown{position:relative}
.unknown::after{content:"未知領域";position:absolute;top:-10px;right:12px;font-size:11px;padding:4px 8px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.92);box-shadow:0 0 0 6px rgba(37,99,235,.08)}
.storyText{white-space:pre-wrap;line-height:1.85;color:var(--text)}
.input, textarea{width:100%;padding:12px;border-radius:14px;border:1px solid var(--line);background:var(--input-bg);color:var(--text);outline:none}
textarea{min-height:96px;resize:vertical}
.gallery{display:grid;grid-template-columns:1fr;gap:10px;margin-top:12px}
@media(min-width:780px){.gallery{grid-template-columns:1fr 1fr}}
.gItem{border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.90);padding:10px}
.gItem img,.gItem video{width:100%;border-radius:14px;border:1px solid var(--line)}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:18px;padding:10px 12px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.92);box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-4px)}

/* --- Choice color accents (soft) --- */
.choiceA{border-left:6px solid rgba(37,99,235,.45)}
.choiceB{border-left:6px solid rgba(16,185,129,.45)}
.choiceC{border-left:6px solid rgba(147,51,234,.35)}
.choiceX{border-left:6px solid rgba(245,158,11,.45)} /* custom */
.choiceA:hover{border-left-color: rgba(37,99,235,.70)}
.choiceB:hover{border-left-color: rgba(16,185,129,.70)}
.choiceC:hover{border-left-color: rgba(147,51,234,.55)}

/* big cover header */
.coverHero{
  border:1px solid var(--line);
  border-radius: var(--r);
  overflow:hidden;
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.70));
  box-shadow: var(--shadow);
}
.coverHeroTop{
  padding:14px;
  display:flex; gap:12px; align-items:flex-end; justify-content:space-between; flex-wrap:wrap;
}
.coverHeroArt{
  width:100%;
  aspect-ratio: 16/9;
  border-top:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  font-size:56px;
}
.coverHeroArt.urban{background: radial-gradient(600px 320px at 30% 30%, rgba(37,99,235,.14), transparent 60%), linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.65))}
.coverHeroArt.cyber{background: radial-gradient(600px 320px at 30% 30%, rgba(236,72,153,.12), transparent 60%), radial-gradient(600px 320px at 80% 70%, rgba(14,165,233,.10), transparent 60%), linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.62))}
.coverHeroArt.dark{background: radial-gradient(600px 320px at 30% 30%, rgba(147,51,234,.12), transparent 60%), radial-gradient(600px 320px at 80% 70%, rgba(245,158,11,.10), transparent 60%), linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.62))}

/* --- Cover images --- */
.coverImg{width:100%;height:100%;object-fit:cover;border-radius:0}
.coverOverlay{
  position:absolute;inset:0;
  display:flex;flex-direction:column;justify-content:flex-end;gap:6px;
  padding:10px;
  background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,.55) 100%);
}
.coverOverlay .title{color:#fff;font-weight:900;font-size:12px;line-height:1.3;text-shadow:0 1px 2px rgba(0,0,0,.45)}
.coverOverlay .tag{display:inline-flex;align-self:flex-start;font-size:11px;color:#fff;padding:4px 8px;border-radius:999px;border:1px solid rgba(255,255,255,.35);background:rgba(0,0,0,.25);text-shadow:0 1px 2px rgba(0,0,0,.45)}
.bookCoverWrap{position:relative;width:100%;height:100%}
.coverHeroArt img{width:100%;height:100%;object-fit:cover;display:block}

/* --- Dark theme overrides --- */
html[data-theme="dark"]{
  --bg:#07090f;
  --card:#0C1020;
  --line: rgba(255,255,255,.12);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --muted2: rgba(255,255,255,.78);
  --accent:#8ff7ff;
  --accent2:#a8ff9e;
  --shadow: 0 14px 50px rgba(0,0,0,.55);

  --pill-bg: rgba(255,255,255,.08);
  --pill-text: rgba(255,255,255,.86);
  --input-bg: rgba(255,255,255,.06);
}
html[data-theme="dark"] body{
  background:
    radial-gradient(1100px 540px at 15% 10%, rgba(143,247,255,.14), transparent 60%),
    radial-gradient(900px 520px at 85% 20%, rgba(168,255,158,.10), transparent 55%),
    radial-gradient(900px 600px at 55% 120%, rgba(255,107,107,.10), transparent 55%),
    var(--bg);
}
html[data-theme="dark"] .brand{background: rgba(0,0,0,.28)}
html[data-theme="dark"] .pill{background: rgba(0,0,0,.22)}
html[data-theme="dark"] .btn{background: rgba(0,0,0,.22)}
html[data-theme="dark"] .hero{background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(0,0,0,.22))}
html[data-theme="dark"] .choice{background: rgba(0,0,0,.20)}
html[data-theme="dark"] .search{background: rgba(0,0,0,.26)}


/* --- Theme text bindings --- */
.storyText{ color: var(--text) !important; }
.card, .hero, .choice{ color: var(--text); }
.d{ color: var(--muted2); }
.muted{ color: var(--muted) !important; }
textarea, input, .input{
  color: var(--text);
  background: rgba(255,255,255,.75);
  border-color: var(--line);
}
html[data-theme="dark"] textarea,
html[data-theme="dark"] input,
html[data-theme="dark"] .input{
  background: rgba(0,0,0,.28);
  color: var(--text);
}
html[data-theme="dark"] a{ color: var(--accent); }


/* --- Contrast fixes for Story Hero (dark) --- */
html[data-theme="dark"] .coverHero{
  background: rgba(0,0,0,.35) !important;
  border: 1px solid rgba(255,255,255,.10);
}
html[data-theme="dark"] .coverHeroArt{
  background: rgba(0,0,0,.35) !important;
  color: rgba(255,255,255,.88) !important;
}
html[data-theme="dark"] .coverHero .t,
html[data-theme="dark"] .coverHero .bookTitle,
html[data-theme="dark"] .coverHero .storyText,
html[data-theme="dark"] .coverHero .d{
  color: rgba(255,255,255,.92) !important;
}
html[data-theme="dark"] .coverHero .muted{
  color: rgba(255,255,255,.75) !important;
}
html[data-theme="dark"] .coverHero .badge,
html[data-theme="dark"] .coverHero .pill{
  background: rgba(0,0,0,.30) !important;
  color: rgba(255,255,255,.88) !important;
  border-color: rgba(255,255,255,.16) !important;
}
html[data-theme="dark"] .coverHero .btn{
  background: rgba(0,0,0,.30) !important;
  color: rgba(255,255,255,.92) !important;
  border-color: rgba(255,255,255,.16) !important;
}
html[data-theme="dark"] .coverHero .btn.primary{
  background: rgba(143,247,255,.16) !important;
  border-color: rgba(143,247,255,.35) !important;
}


/* --- Cover text readability fixes --- */
.coverOverlay{
  background: linear-gradient(180deg,
    rgba(0,0,0,0) 28%,
    rgba(0,0,0,.38) 58%,
    rgba(0,0,0,.78) 100%) !important;
}
.coverOverlay .title{
  text-shadow: 0 2px 10px rgba(0,0,0,.65), 0 1px 1px rgba(0,0,0,.35);
}
.coverOverlay .tag{
  background: rgba(0,0,0,.42) !important;
  border-color: rgba(255,255,255,.22) !important;
  backdrop-filter: blur(6px);
}
html[data-theme="dark"] .coverOverlay{
  background: linear-gradient(180deg,
    rgba(0,0,0,0) 22%,
    rgba(0,0,0,.48) 55%,
    rgba(0,0,0,.88) 100%) !important;
}
html[data-theme="dark"] .coverOverlay .title{
  text-shadow: 0 2px 14px rgba(0,0,0,.85), 0 1px 1px rgba(0,0,0,.45);
}

html[data-theme="dark"] .bookTitle{ color: rgba(255,255,255,.92); }