:root {
  --bg:#0a0a0d; --panel:#16161c; --line:#2a2a33; --text:#ececf1; --dim:#8b8b99;
  --accent:#ff3d7f; --green:#2ee66b; --yellow:#ffc531; --red:#ff2d3d;
  --sat: env(safe-area-inset-top); --sab: env(safe-area-inset-bottom);
}
* { box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
html,body { margin:0; height:100%; background:#000; color:var(--text); overscroll-behavior:none;
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",sans-serif; }
button,input,select,textarea { font:inherit; color:inherit; }
button { background:var(--panel); border:1px solid var(--line); border-radius:12px; padding:11px 14px;
  touch-action:manipulation; -webkit-user-select:none; user-select:none; }
button:active { filter:brightness(1.4); }
button.primary { background:var(--accent); border-color:var(--accent); color:#fff; font-weight:700; }
button.big { width:100%; padding:16px; font-size:1.1rem; border-radius:14px; }
button.sm { padding:6px 10px; font-size:.8rem; border-radius:8px; }
input[type=text],input[type=url],input[type=number],input[type=password],select,textarea {
  background:#0f0f14; border:1px solid var(--line); border-radius:10px; padding:10px; width:100%; font-size:16px; }
textarea { min-height:110px; resize:vertical; line-height:1.55; }
input[type=range] { width:100%; accent-color:var(--accent); }
.hidden { display:none !important; }
.hint { color:var(--dim); font-size:.8rem; line-height:1.65; }
.dim { color:var(--dim); font-size:.85rem; }
.mt { margin-top:10px; }
.row { display:flex; gap:8px; align-items:center; }
.row > input, .row > .primary { flex:1; }
.screen { position:fixed; inset:0; }

/* ================= calculator ================= */
#lock { background:#000; z-index:100; display:flex; flex-direction:column; justify-content:flex-end;
  padding:0 16px calc(var(--sab) + 20px); -webkit-user-select:none; user-select:none; }
#calcDisp { color:#fff; font-size:5rem; font-weight:300; text-align:right; padding:0 8px 12px;
  white-space:nowrap; overflow:hidden; font-variant-numeric:tabular-nums; }
#calcKeys { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; }
#calcKeys button { aspect-ratio:1; border-radius:50%; border:0; background:#2f2f33; font-size:1.9rem; color:#fff; padding:0; }
#calcKeys button.fn { background:#9a9aa0; color:#000; font-size:1.5rem; }
#calcKeys button.op { background:#f09a30; font-size:2.1rem; }
#calcKeys button.zero { grid-column:span 2; aspect-ratio:auto; border-radius:999px; text-align:left; padding-left:30px; }

/* ================= pin ================= */
#pinSetup { background:var(--bg); z-index:90; display:flex; align-items:center; justify-content:center; padding:24px; }
.pinBox { width:100%; max-width:380px; display:flex; flex-direction:column; gap:12px; }
.pinBox h2 { margin:0; }
.err { color:var(--red); font-size:.85rem; min-height:1em; }

/* ================= main ================= */
#main { background:var(--bg); overflow-y:auto; -webkit-overflow-scrolling:touch; padding-bottom:calc(var(--sab) + 100px); }
#mainHead { position:sticky; top:0; z-index:5; display:flex; gap:8px; align-items:center;
  padding:calc(var(--sat) + 8px) 12px 8px; background:rgba(10,10,13,.92); backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px); }
.tabs { flex:1; display:flex; background:var(--panel); border-radius:12px; padding:3px; }
.tabs button { flex:1; border:0; background:transparent; padding:8px 0; font-size:.9rem; color:var(--dim); border-radius:9px; }
.tabs button.on { background:#2a2a34; color:#fff; font-weight:700; }
.iconBtn { width:42px; height:42px; padding:0; font-size:1.2rem; border-radius:12px; flex:0 0 auto; }
.tab { padding:12px 14px; }
.tab h3 { font-size:.95rem; margin:22px 0 8px; color:#fff; }
.tab label { display:block; font-size:.85rem; color:var(--dim); margin:12px 0 0; }
.tab label > input, .tab label > select { margin-top:5px; }
.tab label b { color:var(--text); }
.tab label.chk { display:flex; align-items:center; gap:10px; color:var(--text); font-size:.95rem; margin:14px 0 0; }
.tab label.chk input { width:22px; height:22px; margin:0; accent-color:var(--accent); flex:0 0 auto; }
.grid2 { display:grid; grid-template-columns:1fr 1fr; gap:0 10px; }
.seg { display:grid; grid-template-columns:1fr 1fr; gap:8px; }
.seg button { padding:14px 6px; font-size:.9rem; line-height:1.35; }
.seg button.on { border-color:var(--accent); background:rgba(255,61,127,.15); color:#fff; font-weight:700; }

.libBar { display:flex; align-items:center; gap:6px; margin:14px 0 8px; }
.spacer { flex:1; }
#editBtn.on { background:var(--red); border-color:var(--red); color:#fff; }
#library { display:grid; grid-template-columns:repeat(3,1fr); gap:4px; }
.tile { position:relative; aspect-ratio:1; background:#1c1c24 center/cover no-repeat; border-radius:6px; overflow:hidden; }
.tile.off { opacity:.25; filter:grayscale(1); }
.tile .kind { position:absolute; left:4px; bottom:4px; font-size:.65rem; background:rgba(0,0,0,.65); padding:1px 5px; border-radius:4px; }
.tile .nm { position:absolute; inset:0; display:flex; align-items:center; justify-content:center; padding:6px;
  font-size:.7rem; color:var(--dim); text-align:center; word-break:break-all; }
.tile .star { position:absolute; right:2px; top:2px; width:34px; height:34px; padding:0; border:0; background:transparent;
  font-size:1.2rem; color:rgba(255,255,255,.55); text-shadow:0 0 4px #000; }
.tile .star.on { color:var(--yellow); }
.tile .del { position:absolute; inset:0; background:rgba(255,45,61,.35); display:flex; align-items:center; justify-content:center; font-size:1.6rem; }
.empty { grid-column:1/-1; color:var(--dim); font-size:.85rem; padding:18px 0; text-align:center; }
details.help { margin-top:16px; background:var(--panel); border-radius:12px; padding:10px 12px; }
details.help summary { font-size:.9rem; }

#startBar { position:fixed; left:0; right:0; bottom:0; padding:12px 14px calc(var(--sab) + 12px);
  background:linear-gradient(transparent, var(--bg) 35%); }

.statGrid { display:grid; grid-template-columns:repeat(3,1fr); gap:8px; }
.statGrid div { background:var(--panel); border-radius:12px; padding:10px; text-align:center; }
.statGrid b { display:block; font-size:1.4rem; }
.statGrid span { font-size:.72rem; color:var(--dim); }
.hrow { display:flex; justify-content:space-between; gap:8px; padding:10px 2px; border-bottom:1px solid var(--line); font-size:.85rem; }
.hrow .r { font-weight:700; }
.r.finish { color:var(--green); } .r.deny { color:var(--yellow); } .r.ruined { color:var(--red); } .r.quit { color:var(--dim); }

/* ================= session ================= */
#session { background:#000; overflow:hidden; -webkit-user-select:none; user-select:none; -webkit-touch-callout:none; }
#stage { position:absolute; inset:0; display:flex; align-items:center; justify-content:center; transition:filter .6s; }
#stage video, #stage img { width:100%; height:100%; object-fit:contain; background:#000; }
#stage.cover video, #stage.cover img { object-fit:cover; }
#stage img { animation:kb 18s ease-in-out infinite alternate; }
@keyframes kb { from { transform:scale(1) translate(0,0); } to { transform:scale(1.18) translate(-2%,-3%); } }
#xwrap { width:100%; max-width:550px; max-height:100%; overflow:auto; padding:calc(var(--sat) + 60px) 8px 200px; }
#session.red #stage.dim { filter:brightness(.35) saturate(.6); }
#redShade { position:absolute; inset:0; pointer-events:none; background:rgba(255,30,50,.0); transition:background .3s; }
#session.red #redShade { background:rgba(255,30,50,.14); }
#lightFrame { position:absolute; inset:0; pointer-events:none; transition:box-shadow .25s; }
#session.green #lightFrame { box-shadow:inset 0 0 0 5px var(--green), inset 0 0 50px rgba(46,230,107,.45); }
#session.yellow #lightFrame { box-shadow:inset 0 0 0 5px var(--yellow), inset 0 0 50px rgba(255,197,49,.4); }
#session.red #lightFrame { box-shadow:inset 0 0 0 7px var(--red), inset 0 0 80px rgba(255,45,61,.6); animation:redPulse 1s ease-in-out infinite; }
@keyframes redPulse { 50% { box-shadow:inset 0 0 0 10px var(--red), inset 0 0 120px rgba(255,45,61,.75); } }
#progress { position:absolute; top:0; left:0; height:3px; background:var(--accent); width:0; }

.ui { transition:opacity .3s; }
#session.idle .ui { opacity:0; pointer-events:none; }
#topbar { position:absolute; top:0; left:0; right:0; padding:calc(var(--sat) + 10px) 64px 18px 14px;
  display:flex; justify-content:space-between; gap:10px; background:linear-gradient(rgba(0,0,0,.7), transparent); font-size:.85rem; }
#phaseName { font-weight:800; letter-spacing:.12em; }
#clipName { color:#aaa; font-size:.72rem; max-width:50vw; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.stat { color:#ddd; text-align:right; line-height:1.5; }
.iconBtn.float { position:absolute; top:calc(var(--sat) + 8px); right:10px; background:rgba(20,20,26,.55);
  border-color:rgba(255,255,255,.12); z-index:20; }

#lightLabel { position:absolute; left:0; right:0; top:16%; text-align:center; font-size:clamp(3rem,16vw,6rem);
  font-weight:900; letter-spacing:.08em; opacity:0; transform:scale(.8); transition:opacity .25s, transform .25s; pointer-events:none;
  text-shadow:0 0 30px currentColor, 0 2px 8px #000; }
#lightLabel.show { opacity:1; transform:scale(1); }
#msg { position:absolute; left:0; right:0; top:34%; text-align:center; padding:0 22px; pointer-events:none;
  font-size:clamp(1.4rem,6.5vw,2.4rem); font-weight:800; line-height:1.35;
  text-shadow:0 2px 14px #000, 0 0 3px #000; opacity:0; transition:opacity .45s; }
#msg.show { opacity:1; }
#countdown { position:absolute; left:0; right:0; top:50%; text-align:center; font-size:4.5rem; font-weight:900;
  color:#fff; text-shadow:0 0 24px var(--accent), 0 2px 10px #000; pointer-events:none; }
#session.red #countdown { color:var(--red); text-shadow:0 0 20px var(--red), 0 2px 10px #000; font-size:3rem; }

#beatBox { position:absolute; left:50%; bottom:calc(var(--sab) + 104px); transform:translateX(-50%);
  width:110px; height:110px; display:flex; align-items:center; justify-content:center; pointer-events:none; }
#beatRing { position:absolute; inset:0; border-radius:50%; border:3px solid rgba(255,255,255,.85); }
#beatDot { width:32px; height:32px; border-radius:50%; background:var(--green); box-shadow:0 0 26px var(--green); }
#session.yellow #beatDot { background:var(--yellow); box-shadow:0 0 26px var(--yellow); }
#session.red #beatDot { background:var(--red); box-shadow:0 0 26px var(--red); }
#session.red #beatRing { border-color:var(--red); }
#bpm { position:absolute; bottom:-22px; font-size:.72rem; color:#ddd; letter-spacing:.1em; white-space:nowrap; }

#limitBtn { position:absolute; right:14px; bottom:calc(var(--sab) + 112px); width:76px; height:76px; border-radius:50%;
  background:rgba(255,45,61,.25); border:2px solid rgba(255,45,61,.8); color:#fff; font-weight:800; font-size:1rem; z-index:10; }

#controls { position:absolute; left:0; right:0; bottom:0; padding:10px 8px calc(var(--sab) + 10px);
  display:flex; gap:6px; justify-content:center; background:linear-gradient(transparent, rgba(0,0,0,.8)); }
#controls button { flex:1; background:rgba(28,28,36,.82); border-color:rgba(255,255,255,.14); font-size:.78rem; padding:11px 2px; }
#cumBtn { color:#ff8a95; }

#pausedOverlay { position:absolute; inset:0; background:rgba(0,0,0,.6); display:flex; align-items:center; justify-content:center;
  text-align:center; font-size:3rem; z-index:15; }
#pausedOverlay span { font-size:1rem; color:#ccc; }

#endScreen { position:absolute; inset:0; z-index:30; display:flex; align-items:flex-end; background:rgba(0,0,0,.35); }
#endScreen.dark { background:rgba(0,0,0,.85); }
#endScreen .sheet { width:100%; background:rgba(16,16,22,.94); border-radius:22px 22px 0 0; padding:22px 18px calc(var(--sab) + 18px);
  text-align:center; display:flex; flex-direction:column; gap:12px; }
#endScreen h2 { margin:0; font-size:1.5rem; line-height:1.4; }
#endScreen .stats { color:var(--dim); line-height:1.8; font-size:.9rem; }
#endScreen .row button { flex:1; }
.chip { align-self:center; font-size:.75rem; font-weight:800; letter-spacing:.15em; padding:4px 12px; border-radius:999px; border:1px solid; }
.chip.finish { color:var(--green); } .chip.deny { color:var(--yellow); } .chip.ruined { color:var(--red); } .chip.quit { color:var(--dim); }