:root {
  --bg: #191829;
  --panel: #232238;
  --panel2: #2d2c47;
  --line: #3a3858;
  --text: #f3f1ff;
  --muted: #aaa6c8;
  --primary: #ff9fb5;
  --linked: #6fd3ff;
  --accent: #ffe07a;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font-family: 'Zen Maru Gothic', system-ui, sans-serif; }
button { font: inherit; color: inherit; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; }
.logo { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg, #ffb3c6, #a99bff); font-weight: 900; color: #fff; }
.top h1 { margin: 0; font-size: 1.25rem; font-weight: 900; }
.top p { margin: 2px 0 0; color: var(--muted); font-size: .82rem; }
.src { color: var(--linked); font-size: .85rem; white-space: nowrap; }

.layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 16px; padding: 16px 20px; max-width: 1400px; margin: 0 auto; }
.moves { display: flex; flex-direction: column; gap: 4px; max-height: calc(100vh - 110px); overflow-y: auto; position: sticky; top: 16px; align-self: start; }
.moves h3 { margin: 12px 4px 4px; font-size: .78rem; color: var(--muted); letter-spacing: .05em; }
.moves button { text-align: left; background: var(--panel); border: 1px solid transparent; border-radius: 8px; padding: 8px 10px; cursor: pointer; font-size: .9rem; }
.moves button small { display: block; color: var(--muted); font-size: .72rem; }
.moves button:hover { border-color: var(--line); }
.moves button.on { border-color: var(--primary); background: #3a2840; }

.stage { position: relative; height: min(68vh, 620px); border-radius: 14px; overflow: hidden; background: radial-gradient(ellipse at 50% 30%, #4a4470, #1d1b2e 72%); border: 1px solid var(--line); }
.stage canvas { display: block; width: 100% !important; height: 100% !important; }
.hud { position: absolute; top: 12px; left: 14px; right: 14px; display: flex; justify-content: space-between; align-items: flex-start; pointer-events: none; }
.hud-title span { display: block; color: var(--muted); font-size: .78rem; }
.hud-title strong { font-size: 1.6rem; font-weight: 900; margin-right: 8px; }
.hud-title em { color: var(--muted); font-style: normal; font-size: .85rem; }
.count { font-size: 2.6rem; font-weight: 900; color: var(--accent); min-width: 2.5em; text-align: right; text-shadow: 0 2px 12px rgba(0,0,0,.6); }
.beats { position: absolute; top: 70px; right: 16px; display: flex; gap: 5px; pointer-events: none; }
.beats i { width: 10px; height: 10px; border-radius: 50%; background: #3a4050; }
.beats i.on { background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.caption { position: absolute; left: 50%; bottom: 46px; transform: translateX(-50%); width: min(92%, 640px); text-align: center; background: rgba(10, 12, 16, .78); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; font-weight: 700; font-size: 1.02rem; line-height: 1.5; pointer-events: none; transition: border-color .15s; }
.caption.hit { border-color: var(--primary); }
.legend { position: absolute; left: 14px; bottom: 12px; display: flex; gap: 14px; font-size: .75rem; color: var(--muted); pointer-events: none; }
.sw { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.sw.primary { background: #ffa14a; }
.sw.linked { background: var(--linked); }

.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; padding: 12px 2px; font-size: .88rem; }
.btn { background: var(--panel2); border: 1px solid var(--line); border-radius: 8px; padding: 7px 14px; cursor: pointer; }
.btn.main { background: var(--primary); border-color: var(--primary); color: #3a1020; font-weight: 700; }
.btn:disabled { opacity: .45; cursor: default; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { background: var(--panel); border: 0; padding: 7px 12px; cursor: pointer; }
.seg button.on { background: var(--panel2); color: var(--accent); }
.slider { display: inline-flex; align-items: center; gap: 8px; }
.slider input { width: 120px; accent-color: var(--primary); }
.chk { display: inline-flex; align-items: center; gap: 5px; cursor: pointer; }
.chk input { accent-color: var(--primary); }

.info { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; }
.summary { margin: 0 0 8px; font-weight: 700; line-height: 1.7; }
.info h2 { font-size: .95rem; color: var(--muted); margin: 12px 0 6px; }
.info h2 a { color: var(--linked); font-weight: 400; font-size: .8rem; margin-left: 6px; }
.info ul { margin: 0; padding-left: 1.2em; line-height: 1.8; }

.overview { max-width: 1400px; margin: 0 auto; padding: 8px 20px 40px; }
.overview h2 { font-size: 1.1rem; margin: 22px 0 10px; }
.grid7 { display: grid; grid-template-columns: 60px repeat(3, minmax(0, 1fr)); gap: 6px; max-width: 640px; }
.grid7 .h { display: grid; place-items: center; color: var(--muted); font-weight: 700; font-size: .85rem; }
.grid7 button { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px 6px; cursor: pointer; font-weight: 700; }
.grid7 button:hover { border-color: var(--primary); }
.grid7 .na { display: grid; place-items: center; color: #444b5a; }
.general { line-height: 1.9; padding-left: 1.2em; }
.general b { color: var(--accent); font-weight: 400; font-size: .8rem; margin-right: 6px; }
.note { color: var(--muted); font-size: .8rem; }

@media (max-width: 860px) {
  .layout { grid-template-columns: minmax(0, 1fr); padding: 12px 16px; }
  .moves { flex-direction: row; overflow-x: auto; position: static; max-height: none; padding-bottom: 4px; }
  .moves h3 { display: none; }
  .moves button { flex: 0 0 auto; }
  .stage { height: 58vh; }
  .hud-title strong { font-size: 1.2rem; }
  .count { font-size: 2rem; }
  .caption { font-size: .9rem; bottom: 40px; }
  .top { padding: 12px 16px; }
  .top p { display: none; }
  .overview { padding: 8px 16px 32px; }
}

/* ---- モード ---- */
body[data-mode="learn"] .only-practice { display: none !important; }
body[data-mode="practice"] .only-learn { display: none !important; }
.tabs { display: inline-flex; background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.tabs button { border: 0; background: none; padding: 7px 16px; border-radius: 999px; cursor: pointer; font-weight: 700; color: var(--muted); }
.tabs button.on { background: var(--primary); color: #3a1020; }

.side { display: flex; flex-direction: column; gap: 12px; position: sticky; top: 16px; align-self: start; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; display: flex; flex-direction: column; gap: 8px; }
.card h3 { margin: 0; font-size: .9rem; }
.drop { display: flex; flex-direction: column; gap: 4px; align-items: center; text-align: center; border: 2px dashed var(--line); border-radius: 12px; padding: 14px 8px; cursor: pointer; font-size: .85rem; }
.drop.over, .drop:hover { border-color: var(--primary); }
.drop input { display: none; }
.drop b { color: var(--primary); }
.drop small, .muted { color: var(--muted); font-size: .75rem; margin: 0; }
.status { margin: 0; font-size: .8rem; color: var(--muted); line-height: 1.5; word-break: break-all; }
.status b { color: var(--text); }
.rates { display: flex; flex-wrap: wrap; gap: 4px; }
.rates button { background: var(--panel2); border: 1px solid var(--line); border-radius: 8px; padding: 5px 9px; cursor: pointer; font-size: .82rem; }
.rates button.on { background: var(--accent); color: #3a2a00; border-color: var(--accent); font-weight: 700; }
.radio { font-size: .82rem; display: flex; gap: 6px; align-items: flex-start; cursor: pointer; }
.radio input { accent-color: var(--primary); margin-top: 3px; }

.transport { display: flex; align-items: center; gap: 12px; padding: 10px 2px 4px; }
.transport input[type=range] { flex: 1; accent-color: var(--primary); }
.time { font-variant-numeric: tabular-nums; color: var(--muted); font-size: .85rem; white-space: nowrap; }
.timeline { display: flex; gap: 2px; height: 34px; margin: 4px 0; border-radius: 8px; overflow: hidden; }
.timeline button { min-width: 0; border: 0; padding: 0 4px; cursor: pointer; background: hsl(var(--h) 55% 38%); color: #fff; font-size: .68rem; opacity: .55; overflow: hidden; }
.timeline button span { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.timeline button.on { opacity: 1; outline: 2px solid var(--accent); outline-offset: -2px; }
.timeline button:hover { opacity: .85; }

.next { position: absolute; top: 96px; right: 14px; pointer-events: none; }
.nx { background: rgba(20, 18, 36, .8); border: 1px solid var(--line); border-radius: 12px; padding: 8px 12px; text-align: right; min-width: 120px; }
.nx small { display: block; color: var(--muted); font-size: .7rem; }
.nx b { font-size: 1.05rem; }
.nx.soon { border-color: var(--accent); }
.nx .cd { display: block; font-size: 2rem; font-weight: 900; color: var(--accent); line-height: 1.1; }

@media (max-width: 860px) {
  .top { flex-wrap: wrap; }
  .side { position: static; }
  .next { top: 74px; }
}