@font-face {
  font-family: 'NotoMusic';
  src: url('fonts/noto-music.woff2') format('woff2');
  font-display: block;
}

:root {
  --paper: #f7f2e8;
  --paper-2: #efe8da;
  --card: #fffdf8;
  --ink: #1f1c18;
  --ink-2: #5d564b;
  --ink-3: #958c7e;
  --line: #ddd3c2;
  --accent: #2c6a72;
  --accent-ink: #ffffff;
  --accent-soft: rgba(44, 106, 114, 0.12);
  --current: #d07a22;
  --current-soft: rgba(208, 122, 34, 0.16);
  --ok: #2f8a57;
  --bad: #c4453a;
  --missed: #b0897f;
  --shadow: 0 1px 2px rgba(60, 45, 20, .06), 0 6px 20px rgba(60, 45, 20, .07);
  --radius: 14px;
  --serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #1b1a17;
    --paper-2: #232118;
    --card: #25231f;
    --ink: #ece5d8;
    --ink-2: #b9b0a1;
    --ink-3: #847b6e;
    --line: #3a362f;
    --accent: #5fb0b8;
    --accent-ink: #10201f;
    --accent-soft: rgba(95, 176, 184, 0.14);
    --current: #e89a48;
    --current-soft: rgba(232, 154, 72, 0.18);
    --ok: #5cc287;
    --bad: #ec6e60;
    --missed: #9a7d74;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #1b1a17; --paper-2: #232118; --card: #25231f; --ink: #ece5d8; --ink-2: #b9b0a1; --ink-3: #847b6e;
  --line: #3a362f; --accent: #5fb0b8; --accent-ink: #10201f; --accent-soft: rgba(95,176,184,.14);
  --current: #e89a48; --current-soft: rgba(232,154,72,.18); --ok: #5cc287; --bad: #ec6e60; --missed: #9a7d74;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.5 var(--sans);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
button { font: inherit; color: inherit; }
h1, h2, h3 { font-family: var(--serif); font-weight: 650; letter-spacing: -0.01em; margin: 0; }
[hidden] { display: none !important; }

/* ---------- header ---------- */
.top {
  display: flex; align-items: center; gap: 18px;
  padding: 12px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--ink); }
.brand-mark { font-family: 'NotoMusic'; font-size: 30px; line-height: 1; margin-top: -6px; color: var(--accent); }
.brand-name { font-family: var(--serif); font-weight: 650; font-size: 20px; }
.nav { display: flex; gap: 4px; }
.navbtn {
  border: 0; background: none; padding: 7px 12px; border-radius: 999px; cursor: pointer; color: var(--ink-2); font-weight: 500;
}
.navbtn:hover { background: var(--paper-2); color: var(--ink); }
.navbtn.active { background: var(--accent-soft); color: var(--accent); }
.top-right { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--line); background: var(--card);
  padding: 6px 12px; border-radius: 999px; cursor: pointer; font-size: 13.5px; font-weight: 500;
  white-space: nowrap;
}
.pill:hover { border-color: var(--ink-3); }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ink-3); }
.pill.ok .dot { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 25%, transparent); }
.pill.warn .dot { background: var(--current); }
.profile { position: relative; }
.avatar {
  width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent); color: var(--accent-ink); font-size: 12px; font-weight: 600;
}
.profile-btn { padding-left: 6px; }
.caret { color: var(--ink-3); font-size: 11px; }
.menu {
  position: absolute; right: 0; top: calc(100% + 6px); min-width: 220px;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow);
  padding: 6px; z-index: 30;
}
.menu button {
  display: flex; width: 100%; align-items: center; gap: 10px; text-align: left;
  background: none; border: 0; padding: 8px 10px; border-radius: 8px; cursor: pointer;
}
.menu button:hover { background: var(--paper-2); }
.menu .sep { height: 1px; background: var(--line); margin: 6px 4px; }
.menu .check { margin-left: auto; color: var(--accent); }
.menu .muted { color: var(--ink-2); }
.menu .danger { color: var(--bad); }

main { max-width: 1180px; margin: 0 auto; padding: 24px; }
.banner {
  background: var(--current-soft); border: 1px solid color-mix(in srgb, var(--current) 40%, transparent);
  border-radius: 12px; padding: 12px 16px; margin-bottom: 18px;
}

/* ---------- buttons ---------- */
.btn {
  border: 1px solid var(--line); background: var(--card); border-radius: 10px;
  padding: 9px 16px; cursor: pointer; font-weight: 500;
}
.btn:hover { border-color: var(--ink-3); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.07); }
.btn.ghost { background: none; border-color: transparent; color: var(--ink-2); }
.btn.ghost:hover { background: var(--paper-2); color: var(--ink); }
.btn.small { padding: 3px 10px; border-radius: 8px; }
.btn.danger { color: var(--bad); }
.btn.danger-fill { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn:disabled { opacity: .5; cursor: default; }

/* ---------- home ---------- */
.hero {
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 24px; align-items: stretch; margin-bottom: 28px;
}
.continue {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 26px 28px; display: flex; flex-direction: column; gap: 10px;
}
.eyebrow { font-size: 12px; text-transform: uppercase; letter-spacing: .09em; color: var(--ink-3); font-weight: 600; }
.continue h1 { font-size: 30px; line-height: 1.15; }
.continue p { margin: 0; color: var(--ink-2); max-width: 46ch; }
.continue .actions { display: flex; gap: 10px; margin-top: 8px; flex-wrap: wrap; }
.continue .btn.primary { font-size: 16px; padding: 12px 22px; }
.howto {
  border: 1px dashed var(--line); border-radius: var(--radius); padding: 22px 24px; color: var(--ink-2); font-size: 14px;
}
.howto h3 { font-size: 17px; color: var(--ink); margin-bottom: 8px; }
.howto ol { margin: 0; padding-left: 18px; }
.howto li { margin: 4px 0; }
.section-h { display: flex; align-items: baseline; justify-content: space-between; margin: 6px 0 12px; }
.section-h h2 { font-size: 21px; }
.tracks { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.track {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; display: flex; flex-direction: column; gap: 10px;
}
.track.locked { background: transparent; border-style: dashed; color: var(--ink-3); }
.track h3 { font-size: 18px; display: flex; align-items: center; gap: 8px; }
.track p { margin: 0; font-size: 14px; color: var(--ink-2); }
.track.locked p { color: var(--ink-3); }
.track .meta { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--ink-3); }
.prog { height: 6px; background: var(--paper-2); border-radius: 99px; overflow: hidden; }
.prog > i { display: block; height: 100%; background: var(--accent); border-radius: 99px; }
.track .row { display: flex; gap: 8px; margin-top: auto; }
.mini-chips { display: flex; flex-wrap: wrap; gap: 3px; }
.mini-chips i { width: 10px; height: 10px; border-radius: 3px; background: var(--paper-2); }

/* ---------- practice ---------- */
.pbar { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }
.ptitle h2 { font-size: 22px; line-height: 1.1; }
.ptitle p { margin: 2px 0 0; color: var(--ink-2); font-size: 13.5px; }
.seg { display: inline-flex; background: var(--paper-2); border-radius: 10px; padding: 3px; margin-left: auto; }
.seg button { border: 0; background: none; padding: 6px 14px; border-radius: 8px; cursor: pointer; color: var(--ink-2); font-weight: 500; }
.seg button.on { background: var(--card); color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.seg button:disabled { opacity: .4; cursor: default; }
.tempo { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; }
.live { display: flex; gap: 18px; }
.live div { display: flex; flex-direction: column; align-items: center; min-width: 58px; }
.live b { font-family: var(--serif); font-size: 21px; font-weight: 650; line-height: 1.1; font-variant-numeric: tabular-nums; }
.live span { font-size: 11px; color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; }

.chips { display: flex; flex-wrap: wrap; gap: 5px; margin: 4px 0 14px; min-height: 30px; }
.chip {
  font-size: 12.5px; font-weight: 600; padding: 4px 9px 4px; border-radius: 8px; line-height: 1.15;
  background: var(--paper-2); color: var(--ink-3); border: 1.5px solid transparent;
  display: inline-flex; flex-direction: column; align-items: center; min-width: 40px;
}
.chip small { font-size: 9.5px; font-weight: 500; opacity: .85; text-transform: uppercase; letter-spacing: .04em; }
.chip.cal { color: #fff; }
.chip.focus { border-color: var(--ink); }
.chip.locked { opacity: .45; background: transparent; border: 1.5px dashed var(--line); }

.stagewrap {
  position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 12px 18px 6px; min-height: 540px;
}
.stage .line-cur svg { width: 100%; height: auto; display: block; }
.stage .line-next { margin-top: -18px; }
.stage .line-next svg { width: 100%; height: auto; display: block; opacity: .38; }
.stage .line-next.empty { display: none; }
.overlay {
  position: absolute; inset: 0; border-radius: var(--radius);
  background: color-mix(in srgb, var(--card) 94%, transparent);
  display: flex; align-items: center; justify-content: center; z-index: 5; padding: 24px;
  backdrop-filter: blur(2px); overflow: auto;
}
.ocard { max-width: 640px; width: 100%; text-align: center; display: flex; flex-direction: column; gap: 10px; align-items: center; }
.ocard .eyebrow { color: var(--accent); }
.ocard h2 { font-size: 30px; }
.ocard p { margin: 0; color: var(--ink-2); max-width: 54ch; }
.ocard .ex { width: 100%; max-width: 620px; display: flex; justify-content: center; }
.ocard .ex svg { width: 100%; height: auto; max-height: 230px; }
.ocard .actions { display: flex; gap: 10px; justify-content: center; margin-top: 6px; flex-wrap: wrap; }
.ocard .count { display: flex; gap: 8px; justify-content: center; margin: 4px 0; }
.ocard .count i { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--accent); }
.ocard .count i.on { background: var(--accent); }
.ocard .big { font-family: var(--serif); font-size: 64px; line-height: 1; color: var(--accent); }
.ocard .stats { display: flex; gap: 28px; justify-content: center; margin: 6px 0; }
.ocard .stats div { display: flex; flex-direction: column; }
.ocard .stats b { font-family: var(--serif); font-size: 28px; }
.ocard .stats span { font-size: 12px; color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; }
.kbd { font-size: 12.5px; color: var(--ink-3); }

.msg { min-height: 26px; text-align: center; color: var(--ink-2); font-size: 14px; margin: 10px 0 6px; }
.msg b { color: var(--ink); }

/* ---------- notation ---------- */
.staff { color: var(--ink); overflow: visible; }
.staff .stafflines line { stroke: currentColor; stroke-width: 1; opacity: .75; }
.staff .bar { stroke: currentColor; stroke-width: 1.2; }
.staff .brace { fill: none; stroke: currentColor; stroke-width: 2.4; }
.staff .glyph { font-family: 'NotoMusic'; fill: currentColor; }
.staff .timesig { font: 700 22px Georgia, 'Times New Roman', serif; fill: currentColor; }
.staff .nh, .staff .flag, .staff .beam { fill: currentColor; }
.staff .hole { fill: var(--card); }
.staff .stem, .staff .ledger { stroke: currentColor; stroke-width: 1.3; }
.staff .cursor { fill: var(--current-soft); transition: transform .16s ease-out; }
.staff .playhead { stroke: var(--current); stroke-width: 2.5; stroke-linecap: round; }
.staff .lbl { font: 600 12px var(--sans); fill: var(--ink-3); opacity: 0; }
.staff .lbl.on, .staff .hinted .lbl { opacity: 1; }
.staff .hinted .lbl { fill: var(--current); }
.staff .annot { font: 600 13px var(--sans); fill: var(--ink-3); opacity: 0; transition: opacity .2s; }
.staff .played .annot { opacity: 1; }

.slice { transition: color .12s, opacity .12s; }
.slice.current { color: var(--current); }
.slice.ok { color: var(--ok); }
.slice.bad { color: var(--bad); }
.slice.missed { color: var(--missed); opacity: .7; }
.slice.err { color: var(--bad); }
.slice.gone { opacity: 0; transition: opacity .1s; }
.preview .slice { color: var(--ink); }
.staff.heat .slice { transition: none; }

/* ---------- piano ---------- */
.pianowrap { margin-top: 8px; }
.pianohead { display: flex; justify-content: center; font-size: 12px; color: var(--ink-3); margin-bottom: 4px; min-height: 18px; }
.piano { position: relative; height: 92px; user-select: none; touch-action: none; }
.key { position: absolute; top: 0; cursor: pointer; }
.key.white {
  height: 100%; background: #fbf9f4; border: 1px solid #cfc6b6; border-top: 0; border-radius: 0 0 4px 4px; z-index: 1;
}
.key.black { height: 60%; background: #23201c; border-radius: 0 0 3px 3px; z-index: 2; }
.key span { position: absolute; bottom: 4px; left: 0; right: 0; text-align: center; font-size: 8.5px; color: #9a9182; }
.key span.mid { color: var(--accent); font-weight: 700; }
.key.down.white { background: color-mix(in srgb, var(--accent) 35%, #fff); }
.key.down.black { background: var(--accent); }
.key.wrong.white { background: color-mix(in srgb, var(--bad) 45%, #fff); }
.key.wrong.black { background: var(--bad); }
.key.hint.white { background: color-mix(in srgb, var(--current) 45%, #fff); }
.key.hint.black { background: var(--current); }
.key.target.white { background: color-mix(in srgb, var(--current) 30%, #fff); }
.key.target.black { background: var(--current); }

/* ---------- stats ---------- */
.stats-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.stats-head h1 { font-size: 28px; }
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px; }
.tile b { display: block; font-family: var(--serif); font-size: 28px; font-weight: 650; font-variant-numeric: tabular-nums; }
.tile span { font-size: 12px; color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 18px; }
.panel h2 { font-size: 19px; margin-bottom: 4px; }
.panel .sub { color: var(--ink-3); font-size: 13px; margin: 0 0 10px; }
.panel svg { width: 100%; height: auto; display: block; }
.legend { display: flex; gap: 14px; font-size: 12.5px; color: var(--ink-2); align-items: center; flex-wrap: wrap; }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.items { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 8px 22px; }
.item { display: grid; grid-template-columns: 92px 1fr 40px; align-items: center; gap: 10px; font-size: 13.5px; }
.item .prog { height: 7px; }
.item .pct { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink-2); font-size: 12.5px; }
.item.locked { opacity: .4; }
.chart .ax { stroke: var(--line); }
.chart text { fill: var(--ink-3); font: 11px var(--sans); }
.chart .l1 { fill: none; stroke: var(--accent); stroke-width: 2; }
.chart .l2 { fill: none; stroke: var(--current); stroke-width: 2; stroke-dasharray: 0; }
.chart .d1 { fill: var(--accent); }
.chart .d2 { fill: var(--current); }
.empty-note { color: var(--ink-3); font-size: 14px; padding: 10px 0; }

/* ---------- dialog ---------- */
.dlg {
  border: 1px solid var(--line); border-radius: 16px; background: var(--card); color: var(--ink);
  padding: 22px 24px; width: min(520px, calc(100vw - 32px)); box-shadow: var(--shadow);
}
.dlg::backdrop { background: rgba(20, 16, 10, .35); }
.dlg h2 { font-size: 22px; margin-bottom: 12px; }
.dlg .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.dlg input[type=text] {
  width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--paper);
  font: inherit; color: inherit;
}
.dlg p { color: var(--ink-2); margin: 0 0 8px; }
.form { display: flex; flex-direction: column; gap: 14px; }
.form .f { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.form .f > span { display: flex; flex-direction: column; }
.form .f small { color: var(--ink-3); font-size: 12.5px; }
.form select { padding: 6px 8px; border-radius: 8px; border: 1px solid var(--line); background: var(--paper); color: inherit; font: inherit; }
.form input[type=checkbox] { width: 18px; height: 18px; accent-color: var(--accent); }
.form h3 { font-family: var(--sans); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin-top: 6px; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .top { flex-wrap: wrap; padding: 10px 16px; gap: 10px; }
  .top-right { margin-left: 0; width: 100%; justify-content: space-between; }
  main { padding: 16px; }
  .seg { margin-left: 0; }
  .live { width: 100%; justify-content: space-around; }
  .stagewrap { padding: 8px; min-height: 0; }
}