@font-face {
  font-family: 'Bravura';
  src: url('../fonts/Bravura.woff2?v=56c77e0') format('woff2');
  font-display: block;
}

/* night (default). <html data-theme> is set by js/app.js and the inline script in index.html */
:root {
  color-scheme: dark;
  --bg: #12151f;
  --bg2: #1a1f2d;
  --panel: #222839;
  --line: #313954;
  --text: #eef1f8;
  --muted: #9aa3b8;
  --paper: #fbf7ee;
  --accent: #ffb02e;
  --accent-ink: var(--accent); /* accent as text, stars and big numbers */
  --accent-2: #ff7a59;
  --good: #2fc178;
  --bad: #ff5468;
  --bad-ink: #ff9aa6;
  --info: #5aa9ff;
  --off: #434a60;
  --glow-1: rgba(120, 90, 255, 0.18);
  --glow-2: rgba(255, 176, 46, 0.10);
  --shadow-lift: 0 12px 30px rgba(0, 0, 0, 0.3);
  --shadow-stage: 0 10px 30px rgba(0, 0, 0, 0.25);
  --shadow-pop: 0 30px 80px rgba(0, 0, 0, 0.5);
  --scrim: rgba(8, 10, 18, 0.6);
  --label-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
  --display: 'Fredoka', 'Nunito', system-ui, sans-serif;
}

/* daylight: the staff paper and instruments keep their colours, the chrome around them goes light */
:root[data-theme='light'] {
  color-scheme: light;
  --bg: #eceef4;
  --bg2: #f5f6fa;
  --panel: #ffffff;
  --line: #d5d9e3;
  --text: #1d2130;
  --muted: #5c6477;
  --accent-ink: #b36b00;
  --accent-2: #e2582f;
  --good: #17935a;
  --bad: #d93348;
  --bad-ink: #c42b40;
  --info: #2a7bd4;
  --off: #cdd2dd;
  --glow-1: rgba(120, 90, 255, 0.10);
  --glow-2: rgba(255, 176, 46, 0.16);
  --shadow-lift: 0 12px 30px rgba(30, 40, 70, 0.12);
  --shadow-stage: 0 8px 24px rgba(30, 40, 70, 0.10);
  --shadow-pop: 0 30px 80px rgba(30, 40, 70, 0.25);
  --scrim: rgba(30, 35, 55, 0.35);
  --label-shadow: none;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; }

body {
  background:
    radial-gradient(900px 500px at 85% -10%, var(--glow-1), transparent 60%),
    radial-gradient(700px 400px at -10% 110%, var(--glow-2), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: 'Nunito', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

button { font: inherit; }

.muted { color: var(--muted); }

kbd {
  display: inline-block;
  min-width: 1.7em;
  padding: 1px 6px;
  margin: 0 2px;
  border-radius: 6px;
  border: 1px solid var(--line);
  border-bottom-width: 3px;
  background: var(--bg2);
  color: var(--text);
  font: 800 12px/1.5 'Nunito', system-ui, sans-serif;
  text-align: center;
}

/* until js/app.js has applied the language (see index.html) */
.booting #app { visibility: hidden; }

#app { min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; }
body.in-game #app { height: 100vh; height: 100dvh; }

/* ---------- top bar */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 20px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  background: none;
  border: 0;
  color: inherit;
  cursor: pointer;
  padding: 0;
}

.logo { font-family: var(--display); font-weight: 700; font-size: 30px; letter-spacing: 0.5px; }

.logo .o {
  display: inline-block;
  width: 0.56em;
  height: 0.42em;
  margin: 0 0.04em;
  border-radius: 50%;
  background: var(--accent);
  transform: rotate(-20deg);
}

.tag { color: var(--muted); font-size: 14px; font-style: italic; }

.topbar-right { display: flex; align-items: center; gap: 8px; }

.chip {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  max-width: 220px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chip.on { color: var(--good); border-color: rgba(47, 193, 120, 0.5); }
/* audio input chip: four bars light up as the input gets louder (--level, 0–1) */
.chip.mic { display: inline-flex; align-items: center; gap: 7px; }
.chip.mic[hidden] { display: none; }
.chip-label { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.meter { display: inline-flex; align-items: flex-end; gap: 2px; height: 13px; flex: none; }
.meter i {
  width: 3px;
  border-radius: 1px;
  background: currentColor;
  opacity: clamp(0.25, calc((var(--level, 0) - var(--t)) * 8 + 0.25), 1);
  transition: opacity 80ms linear;
}
.meter i:nth-child(1) { height: 40%; --t: 0.2; }
.meter i:nth-child(2) { height: 60%; --t: 0.35; }
.meter i:nth-child(3) { height: 80%; --t: 0.5; }
.meter i:nth-child(4) { height: 100%; --t: 0.65; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}
.icon-btn:hover { border-color: var(--accent); }
.theme-btn .moon, :root[data-theme='light'] .theme-btn .sun { display: none; }
:root[data-theme='light'] .theme-btn .moon { display: block; }

.btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 18px;
  background: var(--accent);
  color: #1b1407;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.1s, filter 0.15s;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.ghost:hover { border-color: var(--accent); }
.btn.small { padding: 8px 12px; font-size: 14px; }
.btn.big { padding: 14px 22px; font-size: 18px; }
.btn kbd { background: rgba(0, 0, 0, 0.12); border-color: rgba(0, 0, 0, 0.2); color: inherit; margin-left: 6px; }
.btn .or { margin-left: 8px; font-size: 13px; font-weight: 700; opacity: 0.75; }

main {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px 16px;
}

.screen { display: none; }
.screen.active { display: flex; flex-direction: column; flex: 1; min-height: 0; }

/* ---------- home */

.hero {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(34px, 6vw, 60px);
  line-height: 1.05;
  margin: 28px 0 10px;
}
.hero span { color: var(--accent-ink); }

.lead { color: var(--muted); font-size: 18px; max-width: 580px; margin: 0; line-height: 1.5; }

/* practice record: what you did today, and all the days so far */
.record { align-self: flex-start; max-width: 640px; margin-top: 18px; padding: 12px 16px; border-radius: 14px; background: var(--bg2); line-height: 1.45; }
.record p { margin: 0; }
.record b { color: var(--accent-ink); font-weight: 800; white-space: nowrap; }
#recordTotal { margin-top: 2px; color: var(--muted); font-size: 14px; }

.instrument-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.instrument-card {
  display: flex; /* a button centres its content otherwise, and cards in a row share one height */
  flex-direction: column;
  padding: 0 0 22px;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.instrument-card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow-lift); }
/* photo across the top of the card (2:1, see img/); the metronome draws one on a panel instead */
.inst-photo { display: block; width: 100%; height: auto; aspect-ratio: 2 / 1; object-fit: cover; background: var(--bg2); transition: transform 0.3s; }
.instrument-card:hover .inst-photo { transform: scale(1.04); }
.inst-art { display: grid; place-items: center; background: linear-gradient(160deg, #eadfc8, #cbb791); }
.inst-art svg { width: 100%; height: 78%; }
.instrument-card .ivory { fill: #f6f1e4; }
.instrument-card .wood { fill: #8a5a33; }
.instrument-card .wood.dark { fill: #5c3a20; }
.instrument-card .body { fill: var(--accent); }
.instrument-card .arm { stroke: #2b2112; stroke-width: 2.5; stroke-linecap: round; transform-box: view-box; transform-origin: 80px 62px; transform: rotate(10deg); }
.instrument-card .arm rect { fill: #5c3a20; stroke: none; }
.instrument-card:hover .arm { animation: swing 0.5s ease-in-out infinite alternate; }

@keyframes swing {
  from { transform: rotate(10deg); }
  to { transform: rotate(-10deg); }
}
@media (prefers-reduced-motion: reduce) {
  .instrument-card:hover .arm { animation: none; }
  .instrument-card:hover .inst-photo { transform: none; }
}

.inst-name, .inst-desc, .inst-stars { padding: 0 22px; }
.inst-name { font-family: var(--display); font-weight: 600; font-size: 26px; margin: 14px 0 4px; }
.inst-desc { color: var(--muted); font-size: 15px; line-height: 1.4; }
.inst-stars { margin-top: auto; padding-top: 14px; color: var(--accent-ink); font-weight: 800; }

.how {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 28px;
}
.how div { padding: 16px; border-radius: 14px; background: var(--bg2); color: var(--muted); line-height: 1.45; }
.how b { display: block; margin-bottom: 4px; color: var(--text); }
.how .letters { color: var(--text); font-weight: 800; letter-spacing: 1px; }

/* ---------- levels */

.levels-head { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; margin: 10px 0 18px; }
.levels-head h2 { font-family: var(--display); font-size: 30px; margin: 0; }

.level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}

.level-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 160px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s;
}
.level-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.level-card.locked { opacity: 0.45; cursor: not-allowed; }
.level-card.locked:hover { transform: none; border-color: var(--line); }
.level-card .num { font-family: var(--display); font-weight: 700; font-size: 36px; line-height: 1; color: var(--accent-ink); }
.level-card .lname { font-weight: 800; font-size: 17px; }
.level-card .lnotes { color: var(--muted); font-size: 14px; letter-spacing: 0.5px; }
.level-card .lfoot { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.level-card .stars { color: var(--accent-ink); font-size: 18px; letter-spacing: 2px; }
.level-card .best { color: var(--muted); font-size: 13px; font-weight: 700; }
.stars .off, .big-stars .off, .lives .off { color: var(--off); }

.badge {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--bg2);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}
.badge.sprint { color: var(--info); }
.badge.survival { color: var(--accent-2); }
.badge.practice { color: var(--good); }
.badge.tempo { color: var(--info); }
.badge.gap { color: var(--accent-2); }
.practice-card .num { color: var(--good); }
#screen-game.calibrate .hud-stats,
#screen-game.practice .hud-stats,
#screen-game.practice .progress,
#screen-game.practice #pauseBtn { display: none; }

.trouble { margin-top: 22px; padding: 16px; border-radius: 16px; background: var(--bg2); }
.trouble-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 10px; }
.trouble-head small { color: var(--muted); font-size: 13px; }
/* the notes on staff paper, like the game's stage */
.trouble-sheet { margin-top: 12px; border-radius: 12px; background: var(--paper); box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06); overflow: hidden; }
.trouble-sheet canvas { display: block; width: 100%; }

/* ---------- game */

#screen-game { gap: 10px; }

.hud { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.hud-title { flex: 1; min-width: 150px; font-weight: 800; font-size: 18px; }
.hud-title .lvl { margin-right: 8px; font-family: var(--display); color: var(--accent-ink); }
.hud-stats { display: flex; gap: 20px; }
.stat { display: flex; flex-direction: column; align-items: flex-end; min-width: 50px; }
.stat-label { color: var(--muted); font-size: 11px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
.stat-value { font-family: var(--display); font-weight: 600; font-size: 22px; line-height: 1.2; font-variant-numeric: tabular-nums; }
.stat-value.lives { color: var(--bad); letter-spacing: 2px; }

.progress { position: relative; height: 14px; border-radius: 999px; background: var(--bg2); overflow: hidden; flex: none; }
.progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 0.25s; }
.progress span {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 10px;
  font-weight: 800;
  color: var(--text);
  text-shadow: var(--label-shadow);
}

.intro {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 14px 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  flex: none;
}
.intro[hidden] { display: none; }
.intro-meta { flex: 1; min-width: 240px; display: flex; flex-direction: column; gap: 4px; }
.intro-title { font-family: var(--display); font-weight: 600; font-size: 22px; }
.intro-desc { color: var(--text); }
.intro-rules, .intro-keys { color: var(--muted); font-size: 14px; }

.stage {
  position: relative;
  flex: 1;
  min-height: 200px;
  border-radius: 20px;
  background: var(--paper);
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06), var(--shadow-stage);
}
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
#screen-game.rhythm #staff, #screen-game:not(.rhythm) #beats { display: none; }

.input-panel { flex: none; padding: 12px; border-radius: 20px; background: var(--bg2); }

/* metronome */

.tap-pad {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 100%;
  height: clamp(90px, 18vh, 160px);
  border: 2px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  transition: background 0.25s, border-color 0.25s;
}
.tap-pad b { font-family: var(--display); font-size: 30px; font-weight: 600; }
.tap-pad small { color: var(--muted); font-size: 13px; font-weight: 700; }
.tap-pad.flash { transition: none; }
.tap-pad.perfect { border-color: var(--good); background: rgba(47, 193, 120, 0.18); }
.tap-pad.good { border-color: var(--accent); background: rgba(255, 176, 46, 0.18); }
.tap-pad.off, .tap-pad.extra { border-color: var(--bad); background: rgba(255, 84, 104, 0.14); }
.result-counts { color: var(--muted); font-size: 14px; font-weight: 700; }

/* piano */

.piano {
  position: relative;
  height: clamp(110px, 22vh, 190px);
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}
.key { position: absolute; top: 0; cursor: pointer; }
.key.white {
  height: 100%;
  border: 1px solid #c4c7d1;
  border-top: 0;
  border-radius: 0 0 8px 8px;
  background: linear-gradient(#ffffff, #eeeef2);
  z-index: 1;
}
.key.black {
  height: 62%;
  border-radius: 0 0 5px 5px;
  background: linear-gradient(#41444f, #14151a);
  box-shadow: 0 3px 4px rgba(0, 0, 0, 0.35);
  z-index: 2;
}
.key.white.down { background: linear-gradient(#ffe9bd, #ffd88a); }
.key.black.down { background: linear-gradient(#8a6a1f, #4d3a0e); }
.key.white.good { background: linear-gradient(#c8f5dc, #8fe3b4); }
.key.white.bad { background: linear-gradient(#ffd0d6, #ff9aa6); }
.key.black.good { background: #1d7a4b; }
.key.white.near { background: linear-gradient(#ffe2a0, #ffb02e); }
.key.black.near { background: #b07a10; }
.key.black.bad { background: #a8283a; }
.key.white.hint { animation: hint-white 0.8s ease-in-out 2; }
.key-label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8px;
  color: #8a8f9c;
  font-size: 12px;
  font-weight: 800;
  text-align: center;
  pointer-events: none;
}
.key-label.middle { color: #c27a00; }
.key.hint::after {
  content: attr(data-name);
  position: absolute;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  padding: 2px 7px;
  border-radius: 999px;
  background: #e23b4e;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}

@keyframes hint-white {
  0%, 100% { background: linear-gradient(#ffffff, #eeeef2); }
  50% { background: linear-gradient(#ffe2a0, #ffb02e); }
}

/* fretboard */

.neck-wrap { user-select: none; -webkit-user-select: none; touch-action: none; }
.neck {
  position: relative;
  display: grid;
  grid-template-columns: var(--cols);
  border-radius: 6px;
  background: linear-gradient(to right, transparent 0 var(--open), #6e4626 var(--open) 100%);
}
.cell {
  position: relative;
  height: clamp(24px, 4.4vh, 34px);
  border-right: 2px solid #b9b2a3;
  cursor: pointer;
  z-index: 1;
}
.cell.open { border-right: 6px solid #eee5cf; }
.cell::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: var(--th);
  transform: translateY(-50%);
  background: #e3e3e8;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.4);
}
.cell.wound::before { background: repeating-linear-gradient(90deg, #d8bd84 0 2px, #b39457 2px 3px); }
/* open strings lie on the panel, not the wood: darken them so they show on a light panel */
:root[data-theme='light'] .cell.open::before { background: #a3a8b6; }
:root[data-theme='light'] .cell.open.wound::before { background: repeating-linear-gradient(90deg, #b39457 0 2px, #8c7140 2px 3px); }
.cell .dot {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 22px;
  height: 22px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 800;
  color: #2a1d0f;
  opacity: 0;
  transition: opacity 0.1s;
  pointer-events: none;
}
.cell.labeled .dot { opacity: 1; background: rgba(255, 255, 255, 0.8); }
.cell.open.labeled .dot { background: var(--panel); color: var(--text); border: 1px solid var(--line); }
/* state styles carry .neck so they also win over the labeled open-string dots */
.neck .cell:hover .dot { opacity: 1; background: rgba(255, 176, 46, 0.65); }
.neck .cell.down .dot, .neck .cell.near .dot { opacity: 1; background: var(--accent); color: #2a1d0f; border-color: transparent; }
.neck .cell.good .dot { opacity: 1; background: var(--good); color: #fff; border-color: transparent; }
.neck .cell.bad .dot { opacity: 1; background: var(--bad); color: #fff; border-color: transparent; }
.neck .cell.hint .dot { opacity: 1; background: var(--accent); color: #2a1d0f; border-color: transparent; animation: pulse 0.8s ease-in-out 2; }
.cell.hint .dot::after { content: attr(data-name); }
.cell.hint .dot { font-size: 0; }
.cell.hint .dot::after { font-size: 11px; }
.inlay {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #e8dcc0;
  opacity: 0.55;
  transform: translate(-50%, -50%);
  z-index: 0;
}
.fret-nums {
  display: grid;
  grid-template-columns: var(--cols);
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  text-align: center;
}

@keyframes pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.35); }
}

/* ---------- overlay */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 16px;
  background: var(--scrim);
  backdrop-filter: blur(4px);
}
.overlay.hidden { display: none; }
.overlay-card {
  width: min(460px, 100%);
  padding: 28px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: var(--panel);
  text-align: center;
  box-shadow: var(--shadow-pop);
}
.overlay-card h2 { font-family: var(--display); font-size: 30px; margin: 6px 0; }
.overlay-card p { margin: 6px 0; line-height: 1.45; }
.big-stars { color: var(--accent-ink); font-size: 48px; letter-spacing: 6px; line-height: 1.1; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 18px 0 10px; }
.result-grid div { display: flex; flex-direction: column; gap: 2px; padding: 10px; border-radius: 12px; background: var(--bg2); }
.result-grid span { color: var(--muted); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em; }
.result-grid b { font-family: var(--display); font-size: 24px; font-weight: 600; }
.result-grid small { color: var(--muted); font-size: 12px; }
.result-grid small.new { color: var(--good); font-weight: 800; }
.trouble-line { color: var(--muted); }
.trouble-line b { color: var(--bad-ink); }
.overlay-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 18px; }

/* ---------- settings */

dialog {
  width: min(480px, calc(100% - 32px));
  padding: 0;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
}
dialog::backdrop { background: var(--scrim); backdrop-filter: blur(3px); }
.settings { display: flex; flex-direction: column; gap: 14px; padding: 24px; }
.settings h2 { font-family: var(--display); margin: 0; }
.settings fieldset { border: 0; padding: 0; margin: 0; display: grid; gap: 6px; }
.settings legend { margin-bottom: 8px; font-weight: 800; }
.settings small { display: block; color: var(--muted); font-size: 13px; font-weight: 600; }
.radio, .check { display: flex; gap: 10px; align-items: flex-start; cursor: pointer; }
.radio { padding: 8px 10px; border-radius: 12px; border: 1px solid var(--line); background: var(--bg2); }
.radio > span { display: flex; flex-wrap: wrap; align-items: baseline; column-gap: 10px; }
.settings .radio small { display: inline; }
.radio:has(input:checked) { border-color: var(--accent); }
.radio b { letter-spacing: 1px; }
.radio input, .check input { margin-top: 4px; accent-color: var(--accent); }
.field { display: flex; flex-direction: column; gap: 6px; font-weight: 800; }
.field select {
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg2);
  color: var(--text);
  font: inherit;
  font-weight: 600;
}
.midi-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border-radius: 12px;
  background: var(--bg2);
}
.midi-box [hidden] { display: none; }
.settings-foot { display: flex; justify-content: space-between; gap: 10px; margin-top: 4px; }

/* ---------- small screens */

@media (max-width: 640px) {
  .topbar { padding: 10px 16px; }
  .tag { display: none; }
  .chip { max-width: 120px; padding: 8px 10px; }
  .hud { gap: 8px; }
  .hud-title { order: -1; flex-basis: 100%; }
  .hud-stats { gap: 14px; margin-left: auto; }
  .stat-value { font-size: 18px; }
  .cell .dot { width: 18px; height: 18px; }
}

@media (max-height: 700px) {
  .hero { margin-top: 12px; }
  .intro { padding: 10px 14px; }
}