:root {
  --bg: #0d0f14; --panel: #161a22; --panel2: #1e2430; --line: #2a3140;
  --text: #e8ecf3; --dim: #8b94a7; --accent: #5b8cff; --accent2: #7c5bff; --danger: #ff5b6e;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { background: var(--bg); color: var(--text); font: 15px/1.45 "Segoe UI", system-ui, sans-serif; overflow-y: auto; user-select: none; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; border-radius: 8px; }
.ghost { background: var(--panel2); border: 1px solid var(--line); padding: 8px 14px; }
.ghost:hover { border-color: var(--accent); }
.danger:hover { border-color: var(--danger); color: var(--danger); }

.top { position: sticky; top: 0; z-index: 5; display: flex; gap: 10px; align-items: center; padding: 14px 24px;
  background: rgba(13,15,20,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; font-size: 18px; margin-right: auto; display: flex; align-items: center; gap: 10px; }
.logo { width: 30px; height: 30px; }
#search, #sort { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; outline: none; }
#search { width: 240px; }
#search:focus, #sort:focus { border-color: var(--accent); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 22px; padding: 26px 24px 40px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; cursor: pointer;
  transition: transform .15s, border-color .15s, box-shadow .15s; position: relative; }
.card:hover, .card:focus-visible { transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 12px 30px rgba(0,0,0,.45); outline: none; }
.thumb { aspect-ratio: 16 / 9; background-size: cover; background-position: center; display: grid; place-items: center; position: relative; }
.thumb.gen { font-weight: 800; font-size: 26px; letter-spacing: .5px; text-align: center; padding: 14px; text-shadow: 0 2px 10px rgba(0,0,0,.5); }
.card .quick { position: absolute; right: 10px; bottom: 10px; width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent); display: grid; place-items: center; font-size: 15px; opacity: 0; transform: scale(.8); transition: .15s; }
.card:hover .quick { opacity: 1; transform: scale(1); }
.card .quick:hover { background: #7aa2ff; }
.card .meta { padding: 12px 14px 14px; }
.card h3 { margin: 0; font-size: 16px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card .sub { color: var(--dim); font-size: 13px; margin-top: 2px; }
.badge { position: absolute; top: 10px; left: 10px; background: #1fbf6a; color: #04140b; font-size: 11px; font-weight: 700;
  padding: 3px 8px; border-radius: 20px; z-index: 2; }
.fav { position: absolute; top: 8px; right: 10px; z-index: 2; color: #ffd45b; font-size: 18px; text-shadow: 0 1px 4px #000; }
.missing { opacity: .5; }
.empty { text-align: center; color: var(--dim); margin-top: 80px; }

/* detail page */
.hero { position: relative; overflow: hidden; min-height: 440px; border-bottom: 1px solid var(--line); }
.hero-bg { position: absolute; inset: -40px; background-size: cover; background-position: center; filter: blur(30px) brightness(.35) saturate(1.3); }
.back { position: relative; margin: 20px 24px 0; background: rgba(0,0,0,.4); border: 1px solid var(--line); padding: 7px 14px; }
.back:hover { border-color: var(--accent); }
.hero-inner { position: relative; display: flex; gap: 36px; padding: 26px 40px 44px; align-items: center; flex-wrap: wrap; }
.hero-thumb { flex: 0 0 auto; width: min(560px, 100%); aspect-ratio: 16/9; border-radius: 14px; background-size: cover; background-position: center;
  box-shadow: 0 20px 50px rgba(0,0,0,.6); border: 1px solid rgba(255,255,255,.08); display: grid; place-items: center; }
.hero-thumb.gen { font-size: 44px; font-weight: 800; text-align: center; padding: 20px; }
.hero-text { flex: 1 1 320px; min-width: 0; }
.hero-text h1 { margin: 0 0 10px; font-size: 42px; line-height: 1.1; }
.hero-text p { color: #c4cad6; max-width: 640px; margin: 0 0 16px; }
.stats { color: var(--dim); font-size: 13px; margin-bottom: 22px; display: flex; gap: 18px; flex-wrap: wrap; }
.actions { display: flex; gap: 10px; }
.play { background: linear-gradient(135deg, var(--accent), var(--accent2)); padding: 14px 40px; font-size: 18px; font-weight: 700; }
.play:hover { filter: brightness(1.15); }
.play.running { background: #1fbf6a; color: #04140b; }
#d-fav { font-size: 20px; padding: 8px 16px; }
#d-fav.on { color: #ffd45b; }
.hint { font-size: 12px; color: var(--dim) !important; margin-top: 16px !important; }
kbd { background: var(--panel2); border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; font-size: 11px; }
.manage { padding: 24px 40px 50px; }
.manage h2 { font-size: 15px; color: var(--dim); text-transform: uppercase; letter-spacing: 1px; margin: 0 0 12px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.path { color: var(--dim); font-size: 12px; font-family: Consolas, monospace; margin-top: 14px; user-select: text; }

.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--panel2); border: 1px solid var(--line);
  padding: 10px 18px; border-radius: 10px; z-index: 20; box-shadow: 0 10px 30px rgba(0,0,0,.5); max-width: 80vw; }

/* browser version */
.web-only { display: none; }
body.web .web-only { display: inline-flex; }
body.web .desktop-only { display: none !important; }
a.ghost { text-decoration: none; align-items: center; border-radius: 8px; }
.play:disabled { background: var(--panel2); color: var(--dim); cursor: default; filter: none; font-size: 15px; }
@media (max-width: 720px) {
  .top { flex-wrap: wrap; padding: 12px 16px; }
  #search { width: auto; flex: 1 1 140px; min-width: 0; }
  .grid { padding: 18px 16px 32px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .hero-inner { padding: 16px 16px 30px; gap: 20px; }
  .hero-text h1 { font-size: 30px; }
  .back { margin: 14px 16px 0; }
  .card .quick { opacity: 1; transform: none; }
}