/* Jazz practice app. Palette borrowed from sambowyer.github.io/_sass/_theme.scss;
   dark is the default here because practice rooms are dim. */

:root {
  --bg: #1b1815;
  --bg-2: #241f1b;
  --fg: #ece3d5;
  --muted: #a29684;
  --rule: #ece3d5;
  --rule-soft: #3a332b;
  --accent: #d99464;
  --accent-fg: #1b1815;
  --mark: #4d411f;
  --second: #8fb3c9;   /* chord tones on the fretboard */
  --ok: #8fbf8f;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", "JetBrains Mono", "IBM Plex Mono",
          "Roboto Mono", "DejaVu Sans Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --metro-h: 96px;
  --stave-fg: #ffffff;
}
:root[data-theme="light"] {
  --bg: #faf6ee;
  --bg-2: #f1ebdf;
  --fg: #2b2620;
  --muted: #7d7263;
  --rule: #2b2620;
  --rule-soft: #ded4c2;
  --accent: #8a4b2a;
  --accent-fg: #faf6ee;
  --mark: #f6e6a8;
  --second: #3e6f8c;
  --ok: #3f7d3f;
  --stave-fg: #2b2620;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.4;
  padding-bottom: calc(var(--metro-h) + env(safe-area-inset-bottom));
  overflow-x: hidden;
}
button, input, select { font: inherit; color: inherit; }
a { color: var(--accent); }
h1, h2, h3 { font-weight: 600; margin: 0; }
[hidden] { display: none !important; }

/* ---------- header / tabs ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.brand { font-size: 15px; font-family: var(--mono); color: var(--muted); padding-bottom: 10px; white-space: nowrap; }
.tabs { display: flex; gap: 4px; }
.tab {
  background: none; border: none; border-bottom: 2px solid transparent;
  padding: 8px 12px 10px; cursor: pointer; color: var(--muted); font-size: 15px;
}
.tab.is-active { color: var(--fg); border-bottom-color: var(--accent); }
.tab:hover { color: var(--fg); }

/* ---------- views ---------- */
main { max-width: 980px; margin: 0 auto; padding: 12px 16px; }
.view { display: none; }
.view.is-active { display: block; }

.session-bar { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.session-meta { display: flex; gap: 12px; align-items: baseline; color: var(--muted); font-family: var(--mono); font-size: 13px; }
.progress { color: var(--fg); }

.overview { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 12px; }
.overview .dot {
  width: 22px; height: 6px; border-radius: 3px; background: var(--rule-soft); cursor: pointer; border: none; padding: 0;
}
.overview .dot.is-current { background: var(--accent); }
.overview .dot.is-done { background: var(--ok); }
.overview .dot.is-done.is-current { background: var(--accent); box-shadow: 0 0 0 2px var(--ok); }

.nav-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 12px; }
.timer { font-family: var(--mono); color: var(--muted); font-size: 14px; min-width: 60px; text-align: center; cursor: pointer; user-select: none; }
.timer.is-running { color: var(--fg); }
.timer.is-over { color: var(--accent); }

/* ---------- buttons / controls ---------- */
.btn {
  background: var(--bg-2); border: 1px solid var(--rule-soft); color: var(--fg);
  border-radius: 8px; padding: 10px 14px; cursor: pointer; min-height: 44px;
  touch-action: manipulation; user-select: none; -webkit-user-select: none;
}
.btn:hover { border-color: var(--muted); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .4; cursor: default; }
.btn-accent { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); font-weight: 600; }
.btn-ghost { background: transparent; }
.btn-sm { padding: 6px 10px; min-height: 36px; }
.btn.is-done { background: var(--ok); color: var(--accent-fg); border-color: var(--ok); }

.seg { display: inline-flex; border: 1px solid var(--rule-soft); border-radius: 8px; overflow: hidden; }
.seg button {
  background: transparent; border: none; padding: 8px 12px; cursor: pointer; color: var(--muted); min-height: 36px;
  border-right: 1px solid var(--rule-soft);
}
.seg button:last-child { border-right: none; }
.seg button.is-active { background: var(--bg-2); color: var(--fg); }

select {
  background: var(--bg-2); border: 1px solid var(--rule-soft); border-radius: 8px; padding: 10px 12px; min-height: 44px;
  width: 100%; max-width: 420px;
}
input[type="number"] {
  background: var(--bg-2); border: 1px solid var(--rule-soft); border-radius: 8px; padding: 8px; text-align: center;
}
input[type="checkbox"] { width: 18px; height: 18px; vertical-align: -3px; accent-color: var(--accent); }
input[type="range"] { accent-color: var(--accent); }

.field { margin-bottom: 12px; }
.field > label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 6px; }
.field-inline { display: flex; align-items: center; gap: 10px; }
.field-inline > label { color: var(--muted); font-size: 13px; }

.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  background: var(--bg-2); border: 1px solid var(--rule-soft); border-radius: 999px; padding: 6px 12px; cursor: pointer;
  font-family: var(--mono); font-size: 14px; min-height: 36px; color: var(--fg);
}
.chip.is-soft { color: var(--muted); }
.chip.is-active { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.chip:hover { border-color: var(--muted); }

/* ---------- exercise card ---------- */
.card {
  background: var(--bg-2); border: 1px solid var(--rule-soft); border-radius: 12px; padding: 16px;
}
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.card-kind { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.card-title { font-size: 26px; line-height: 1.2; margin: 2px 0 6px; }
.card-sub { font-family: var(--mono); font-size: 14px; color: var(--muted); display: flex; gap: 16px; flex-wrap: wrap; }
.card-sub b { color: var(--fg); font-weight: 500; }
.card-note { color: var(--muted); font-size: 14px; margin-top: 6px; }
.card-section { margin-top: 14px; }
.card-section-title { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 6px; display: flex; justify-content: space-between; align-items: center; }
.stave { width: 100%; overflow: hidden; }
.stave svg { display: block; max-width: 100%; }
.fretboard { width: 100%; overflow-x: auto; }
.fretboard svg { display: block; width: 100%; height: auto; }
.chord-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.chord-item { border: 1px solid var(--rule-soft); border-radius: 8px; padding: 8px 10px; cursor: pointer; }
.chord-item.is-active { border-color: var(--accent); }
.chord-item .sym { font-size: 18px; }
.chord-item .num { font-family: var(--mono); color: var(--muted); font-size: 12px; margin-left: 6px; }
.chord-item .scales { font-size: 13px; color: var(--muted); margin-top: 2px; }
.chord-item .scales b { color: var(--fg); font-weight: 500; }
.chord-boxes { display: flex; flex-wrap: wrap; gap: 6px; }
.chord-box { background: none; border: 1px solid transparent; border-radius: 8px; padding: 4px 2px 0; cursor: pointer; color: var(--fg); }
.chord-box:hover { border-color: var(--rule-soft); }
.chord-box.is-active { border-color: var(--accent); background: var(--bg); }
.chord-box svg { display: block; width: 110px; height: auto; }
.chord-box-cap { font-size: 12px; text-align: center; white-space: nowrap; margin-bottom: 2px; font-weight: 500; }
.voicing-controls { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 8px; }
.free-play { text-align: center; padding: 40px 0; color: var(--muted); }
.free-play h2 { color: var(--fg); margin-bottom: 8px; }

.mini-seg { display: inline-flex; gap: 2px; }
.mini-seg button { background: none; border: 1px solid var(--rule-soft); color: var(--muted); border-radius: 6px; padding: 2px 8px; font-size: 12px; cursor: pointer; }
.mini-seg button.is-active { color: var(--fg); background: var(--bg); }

/* ---------- settings ---------- */
.settings-group { margin-bottom: 22px; }
.settings-group h2 { font-size: 14px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 10px; padding-bottom: 6px; border-bottom: 1px solid var(--rule-soft); }
.settings-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 0; }
.settings-row label { display: flex; align-items: center; gap: 8px; }
.pool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 4px 12px; }
.pool-grid label { display: flex; align-items: center; gap: 8px; padding: 6px 0; font-size: 15px; cursor: pointer; }
.pool-grid .grp { grid-column: 1 / -1; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; margin-top: 8px; }
.stats { font-family: var(--mono); color: var(--muted); font-size: 14px; }
.stats b { color: var(--fg); font-weight: 500; }

/* ---------- metronome bar ---------- */
.metro {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  background: var(--bg); border-top: 1px solid var(--rule-soft);
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
}
.metro-row { display: flex; align-items: center; gap: 8px; max-width: 980px; margin: 0 auto; }
.metro-play { width: 56px; min-width: 56px; font-size: 18px; }
.metro-play.is-running { background: var(--fg); border-color: var(--fg); }
.metro-bpm { display: flex; align-items: center; gap: 4px; }
.metro-bpm input { width: 64px; font-family: var(--mono); font-size: 18px; min-height: 40px; }
.metro-bpm input::-webkit-outer-spin-button, .metro-bpm input::-webkit-inner-spin-button { -webkit-appearance: none; }
.metro-bpm input[type=number] { -moz-appearance: textfield; }
.metro-dots { display: flex; gap: 6px; margin-left: auto; }
.metro-dots span { width: 12px; height: 12px; border-radius: 50%; background: var(--rule-soft); transition: background .05s; }
.metro-dots span.is-on { background: var(--accent); }
.metro-dots span.is-on.is-accent { background: var(--fg); }
.metro-dots span.is-muted { opacity: .35; }
.metro-slider { display: block; width: 100%; max-width: 980px; margin: 6px auto 0; }
.metro-options { display: flex; flex-wrap: wrap; gap: 14px; max-width: 980px; margin: 8px auto 0; padding-top: 8px; border-top: 1px solid var(--rule-soft); }

/* ---------- small screens ---------- */
@media (max-width: 480px) {
  .topbar { padding: 6px 12px 0; }
  .brand { display: none; }
  .tabs { width: 100%; justify-content: space-around; }
  main { padding: 10px 12px; }
  .card { padding: 12px; }
  .card-title { font-size: 22px; }
  .metro-bpm input { width: 54px; }
  .metro-play { width: 48px; min-width: 48px; }
  .metro-dots { gap: 4px; }
  .metro-dots span { width: 10px; height: 10px; }
  .btn { padding: 10px 12px; }
  .btn-sm { padding: 6px 8px; }
  .nav-row .btn { padding: 10px 10px; }
  .chord-boxes { gap: 2px; }
  .chord-box { padding: 2px 0 0; max-width: 80px; }
  .chord-box svg { width: 76px; }
  .chord-box-cap { font-size: 10px; overflow: hidden; text-overflow: ellipsis; }
  body { --metro-h: 108px; }
}
@media (max-width: 400px) {
  #metro-minus, #metro-plus { display: none; }
}