/*
 * Themes. Each theme sets the same tokens; `data-theme` on <html> picks one
 * (client/theme.js, from the account or this device), and ids come from
 * shared/themes.js. The theme picker puts `data-theme` on its preview cards,
 * so a card shows its theme with these same tokens.
 *
 * Tracks and patterns are colour-coded by a per-element `--hue`; the
 * `--tint-*` tokens are the saturation and lightness that hue is drawn at,
 * so a light theme can pull those colours down where a dark one pushes them
 * up: `hsl(var(--hue) var(--tint))`.
 * Where something should follow the theme rather than a track, `--hue:
 * var(--accent-hue)` draws it in the accent colour at the same levels.
 */
:root, [data-theme="dark"] {
  --bg: #0b0b13;
  --panel: #13141f;
  --panel-2: #1a1c2a;
  --line: #2a2d40;
  --line-strong: #474b66;
  --fg: #d4d9e6;
  --muted: #6d7490;
  --accent: #7fffd4;
  --accent-hue: 160;          /* the accent's hue, for drawing it at the --tint-* levels */
  --on-accent: #06231b;
  --danger: #ff6b8a;
  --on-danger: #2a0610;
  --shadow: rgb(0 0 0 / 0.5);
  --tint: 70% 60%;            /* the track colour itself: borders, dots, notes */
  --tint-bright: 80% 70%;     /* highlights, hovers, sliders, graphs */
  --tint-hot: 90% 75%;        /* accented notes, live balls */
  --tint-text: 70% 70%;       /* text in the track colour */
  --tint-line: 60% 40%;       /* borders of tinted blocks */
  --tint-fill: 45% 22%;       /* tinted block backgrounds */
  --tint-fill-deep: 45% 18%;
  --tint-fill-on: 55% 30%;    /* the block that's playing / the segment that's on */
  --tint-dim: 45% 30%;        /* idle timeline segments */
  --radius: 6px;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #f3f4f9;
  --panel: #ffffff;
  --panel-2: #e9ecf4;
  --line: #d3d8e5;
  --line-strong: #adb4c9;
  --fg: #1b1f2e;
  --muted: #646d87;
  --accent: #0a7f60;
  --accent-hue: 164;          /* the accent's hue, for drawing it at the --tint-* levels */
  --on-accent: #ffffff;
  --danger: #cf2b52;
  --on-danger: #ffffff;
  --shadow: rgb(24 28 44 / 0.18);
  --tint: 60% 42%;
  --tint-bright: 65% 36%;
  --tint-hot: 75% 30%;
  --tint-text: 55% 32%;
  --tint-line: 50% 64%;
  --tint-fill: 60% 91%;
  --tint-fill-deep: 60% 94%;
  --tint-fill-on: 60% 82%;
  --tint-dim: 45% 74%;
  color-scheme: light;
}

[data-theme="goth"] {
  --bg: #060308;
  --panel: #0e0a12;
  --panel-2: #17101d;
  --line: #2c1f36;
  --line-strong: #4a3556;
  --fg: #d8cfe3;
  --muted: #7c6b8c;
  --accent: #b993ff;
  --accent-hue: 261;          /* the accent's hue, for drawing it at the --tint-* levels */
  --on-accent: #140a26;
  --danger: #ff3d62;
  --on-danger: #2a0610;
  --shadow: rgb(0 0 0 / 0.7);
  --tint: 55% 55%;
  --tint-bright: 65% 68%;
  --tint-hot: 80% 76%;
  --tint-text: 55% 68%;
  --tint-line: 45% 36%;
  --tint-fill: 35% 17%;
  --tint-fill-deep: 35% 13%;
  --tint-fill-on: 45% 25%;
  --tint-dim: 35% 26%;
  color-scheme: dark;
}

[data-theme="dawn"] {
  --bg: #fbf1ea;
  --panel: #fff9f5;
  --panel-2: #f5e4d9;
  --line: #e7d2c4;
  --line-strong: #cdae9c;
  --fg: #3a2830;
  --muted: #8f7078;
  --accent: #c9541f;
  --accent-hue: 19;           /* the accent's hue, for drawing it at the --tint-* levels */
  --on-accent: #fff9f5;
  --danger: #c22c52;
  --on-danger: #ffffff;
  --shadow: rgb(90 50 40 / 0.2);
  --tint: 62% 48%;
  --tint-bright: 70% 40%;
  --tint-hot: 80% 34%;
  --tint-text: 55% 36%;
  --tint-line: 55% 66%;
  --tint-fill: 70% 91%;
  --tint-fill-deep: 70% 94%;
  --tint-fill-on: 65% 83%;
  --tint-dim: 50% 74%;
  color-scheme: light;
}

[data-theme="forest"] {
  --bg: #0a140f;
  --panel: #101d15;
  --panel-2: #17281d;
  --line: #263c2d;
  --line-strong: #3f5c48;
  --fg: #d8e6da;
  --muted: #7d9784;
  --accent: #9be07a;
  --accent-hue: 101;          /* the accent's hue, for drawing it at the --tint-* levels */
  --on-accent: #082010;
  --danger: #ff7a6b;
  --on-danger: #2a0c08;
  --shadow: rgb(0 0 0 / 0.55);
  --tint: 55% 58%;
  --tint-bright: 65% 68%;
  --tint-hot: 80% 76%;
  --tint-text: 55% 70%;
  --tint-line: 45% 38%;
  --tint-fill: 35% 20%;
  --tint-fill-deep: 35% 16%;
  --tint-fill-on: 45% 28%;
  --tint-dim: 35% 28%;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--fg); }
body { font: 14px/1.45 ui-sans-serif, system-ui, -apple-system, sans-serif; }
button, input, select { font: inherit; color: inherit; }
a { color: var(--accent); text-decoration: none; }

button {
  background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 5px 11px; cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: 0.4; cursor: default; }
button.primary { background: var(--accent); color: var(--on-accent); border-color: var(--accent); font-weight: 600; }
button.ghost, a.ghost { background: transparent; border-color: transparent; color: var(--fg); }
button.ghost:hover:not(:disabled) { border-color: var(--line); }
button.danger:hover:not(:disabled) { color: var(--danger); border-color: var(--danger); }
button.toggle.on { background: var(--danger); color: var(--on-danger); }

input, select {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 5px 8px;
}
input:focus, select:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
input[type=range] { padding: 0; border: 0; background: none; accent-color: hsl(var(--hue, 160) var(--tint-bright)); }

.muted { color: var(--muted); }
.error { color: var(--danger); }
.loading { padding: 48px; text-align: center; color: var(--muted); }

.brand { font: 700 18px ui-monospace, Menlo, monospace; color: var(--fg); letter-spacing: -0.02em; }
.brand span { color: var(--accent); }

/* ---- shell ---- */

header.site {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 20px; border-bottom: 1px solid var(--line);
}
header.site .user { display: flex; align-items: center; gap: 10px; }
header.site img { width: 26px; height: 26px; border-radius: 50%; }

.sign-in { max-width: 360px; margin: 18vh auto 0; text-align: center; display: grid; gap: 18px; justify-items: center; }
.sign-in .brand { font-size: 40px; margin: 0; }
.sign-in .tagline { margin: -10px 0 8px; color: var(--muted); }
.dev-login { display: flex; gap: 8px; }
/* Sized to sit under Google's large pill button. Apple's guidelines: white
   on dark backgrounds, black on light — their colours, not the theme's. */
.apple-button {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 40px; min-width: 220px; padding: 0 20px; border-radius: 20px;
  font: 500 15px/1 -apple-system, BlinkMacSystemFont, system-ui, sans-serif; cursor: pointer;
}
.apple-button svg { width: 16px; height: 16px; margin-top: -2px; }
.apple-button, .apple-button:hover:not(:disabled) { border: 1px solid transparent; }
.apple-button.on-dark { background: #fff; color: #000; }
.apple-button.on-light { background: #000; color: #fff; }
.apple-button:disabled { opacity: 0.6; cursor: default; }
.notice { color: var(--muted); }

.song-list { max-width: 720px; margin: 32px auto; padding: 0 16px; }
.new-song { display: flex; gap: 8px; }
.new-song input { flex: 1; }
.song-list h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 32px 0 8px; }
.song-list ul { list-style: none; margin: 0; padding: 0; }
.song-list li {
  display: flex; align-items: center; gap: 12px; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 6px; background: var(--panel);
}
.song-list li a { flex: 1; font-weight: 600; }

/* ---- editor ---- */

.editor { padding: 12px 20px 40px; }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.toolbar .title { font-size: 18px; font-weight: 600; background: transparent; border-color: transparent; min-width: 0; flex: 0 1 320px; }
.toolbar .title:hover { border-color: var(--line); }
.status { font-size: 12px; color: var(--muted); }
.status.error, .status.conflict { color: var(--danger); }
.transport { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.transport input { width: 64px; margin-left: 6px; }
.transport .play { min-width: 92px; font-weight: 600; }
.transport .play.on { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }

.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin: 14px 0 18px; overflow-x: auto; scrollbar-width: none; }
.tabs a { padding: 8px 14px; white-space: nowrap; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a.active { color: var(--fg); border-bottom-color: var(--accent); }

/* ---- instruments ---- */

.instruments { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; }
.track { border: 1px solid var(--line); border-left: 4px solid hsl(var(--hue) var(--tint)); border-radius: var(--radius); background: var(--panel); }
.track.muted { opacity: 0.55; }
.track header { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 8px 10px; }
.track header .name { font-weight: 600; flex: 1 1 120px; max-width: 200px; min-width: 0; }
.track header .volume { width: 110px; }
.track header .disclosure { width: 28px; padding: 5px 0; }
.chain { display: flex; gap: 10px; padding: 0 10px 12px; overflow-x: auto; align-items: flex-start; }
.module { flex: 0 0 320px; background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px 12px; }
.module-heading { margin-bottom: 8px; }
.module h3 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: hsl(var(--hue) var(--tint-text)); margin: 0; display: flex; align-items: center; gap: 6px; }
.module.effect h3 { color: var(--fg); }
.module .description { margin: 3px 0 0; font-size: 12px; color: var(--muted); line-height: 1.35; }
.badge {
  font-size: 10px; letter-spacing: 0.04em; text-transform: none; font-weight: 500; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px; padding: 0 6px;
}
.module .actions { margin-left: auto; display: flex; }
.module .actions button { padding: 0 6px; }
.module.add-effect { flex-basis: 180px; border-style: dashed; background: transparent; padding: 8px; }
.module.add-effect .picker-button { width: 100%; }

/* the main mix: a track-shaped card for effects on the whole song */
.track.mix { border-left: 4px solid var(--muted); margin-top: 8px; }
/* Belongs to no track, so it takes the neutral foreground, not a track hue. */
.track.mix input[type=range] { accent-color: var(--fg); }
.track.mix input[type=range].centered::-webkit-slider-thumb { background: var(--fg); }
.track.mix input[type=range].centered::-webkit-slider-runnable-track {
  background: linear-gradient(to right, var(--line) var(--from), var(--fg) var(--from) var(--to), var(--line) var(--to));
}
.track.mix .segmented button.on { background: var(--line); border-color: var(--muted); }
.track.mix h2 { margin: 0; font-size: 14px; font-weight: 600; }
.track.mix .effects-summary { font-size: 12px; }
.track.mix .hint { margin: -4px 10px 8px 46px; }
.track.mix .module.effect h3 { color: var(--fg); }

/* collapsed track: the instrument's primary params in one row */
.track .summary { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px; padding: 0 10px 10px 46px; }
.track .summary .effects-summary { font-size: 12px; }

/* module picker */
.picker-button { display: inline-flex; align-items: center; gap: 6px; }
.picker-button span { color: var(--muted); font-size: 11px; }
.picker {
  position: fixed; inset: auto; margin: 0; padding: 6px; overflow-y: auto;
  background: var(--panel); color: var(--fg); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 12px 32px var(--shadow);
}
.picker h5 { margin: 8px 8px 2px; font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.picker-section:first-child h5 { margin-top: 2px; }
.picker-item { display: grid; gap: 2px; width: 100%; text-align: left; background: transparent; border-color: transparent; padding: 7px 8px; }
.picker-item:hover:not(:disabled), .picker-item:focus-visible { background: var(--panel-2); border-color: var(--line); }
.picker-item.current { border-color: var(--line); }
.picker-item.current strong::after { content: ' ✓'; color: var(--accent); }
.picker-item .description { font-size: 12px; color: var(--muted); line-height: 1.35; }
.picker-item .tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 2px; }
.tag { font-size: 10px; color: var(--muted); background: var(--bg); border-radius: 999px; padding: 0 7px; }

/* param controls */
.params { display: grid; gap: 2px; }
.params .group + .group { margin-top: 8px; }
.params h4 { margin: 0 0 4px; font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.params .param, .params .preset { display: grid; grid-template-columns: 80px minmax(0, 1fr) 64px; gap: 6px; align-items: center; font-size: 12px; min-height: 22px; }
.params .param.choice { grid-template-columns: 80px minmax(0, 1fr); }
.params .label, .params .preset > span { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.params .param:hover .label { color: var(--fg); }
.params .preset { grid-template-columns: 80px minmax(0, 1fr); margin-bottom: 6px; }
.params .param.inactive { opacity: 0.35; }
.params input[type=range] { width: 100%; min-width: 0; }
.params output { text-align: right; color: var(--muted); font: 11px ui-monospace, Menlo, monospace; white-space: nowrap; }
.params select { padding: 2px 4px; font-size: 12px; min-width: 0; }
.segmented { display: flex; min-width: 0; }
.segmented button { flex: 1 1 auto; min-width: 0; padding: 1px 3px; font-size: 11px; border-radius: 0; margin-left: -1px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.segmented button:first-child { border-radius: var(--radius) 0 0 var(--radius); margin-left: 0; }
.segmented button:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.segmented button.on { background: hsl(var(--hue, 160) var(--tint-fill-on)); border-color: hsl(var(--hue, 160) var(--tint-line)); position: relative; }
/* A range straddling zero fills outward from its center, not from the left. */
input[type=range].centered { accent-color: transparent; }
input[type=range].centered::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px;
  background: linear-gradient(to right, var(--line) var(--from), hsl(var(--hue, 160) var(--tint-bright)) var(--from) var(--to), var(--line) var(--to));
}
input[type=range].centered::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 14px; height: 14px; margin-top: -5px; border-radius: 50%; background: hsl(var(--hue, 160) var(--tint-bright)); }
input[type=range].centered { -webkit-appearance: none; appearance: none; height: 16px; }
input[type=range].centered::-moz-range-track { height: 4px; border-radius: 2px; background: var(--line); }
input[type=range].centered::-moz-range-progress { background: transparent; }
.graph { display: block; width: 100%; height: 36px; background: var(--bg); border-radius: 4px; margin: 2px 0 6px; }
.graph path { fill: none; stroke: hsl(var(--hue, 160) var(--tint-bright)); stroke-width: 1.5; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.graph path.fill { stroke: none; fill: hsl(var(--hue, 160) var(--tint-bright) / 0.12); }
.module.effect .graph path { stroke: var(--fg); }
.module.effect .graph path.fill { fill: color-mix(in srgb, var(--fg) 8%, transparent); }
.params.compact { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.params.compact .param { grid-template-columns: auto 110px 64px; }

/* ---- patterns ---- */

.patterns { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 18px; align-items: start; }
.patterns.empty { display: block; text-align: center; padding: 48px; }
.pattern-list ul { list-style: none; margin: 0 0 8px; padding: 0; }
.pattern-list li button {
  width: 100%; text-align: left; border-left: 3px solid hsl(var(--hue) var(--tint)); border-radius: 0 var(--radius) var(--radius) 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.pattern-list li.active button { background: var(--panel-2); border-color: var(--line); border-left-color: hsl(var(--hue) var(--tint)); font-weight: 600; }
.pattern-editor { min-width: 0; }
.pattern-header { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 12px; }
.pattern-header .name { font-weight: 600; width: 200px; }
.pattern-header label select { margin-left: 6px; }

.track-tabs { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 10px; }
.track-tabs button { border-bottom: 3px solid hsl(var(--hue) var(--tint) / 0.35); }
.track-tabs button.active { border-bottom-color: hsl(var(--hue) var(--tint)); background: var(--panel-2); font-weight: 600; }
.track-tabs small { color: var(--muted); font-weight: 400; margin-left: 4px; }

.step-grid .octave { display: flex; gap: 6px; margin-bottom: 6px; }
.step-grid .octave em { font-style: normal; color: hsl(var(--hue) var(--tint-text)); margin-left: 4px; font-size: 12px; }
.grid-wrap { display: flex; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); overflow-x: auto; }
.labels { flex: 0 0 86px; border-right: 1px solid var(--line); }
.labels .corner { height: 20px; }
.row-label {
  display: block; width: 100%; height: 24px; padding: 0 8px; border: 0; border-radius: 0; text-align: left;
  background: transparent; font: 11px ui-monospace, Menlo, monospace; color: var(--muted);
}
.row-label.black { background: var(--bg); }
.row-label:hover { color: var(--fg); }
.cells { flex: 1; min-width: calc(var(--steps) * 22px); touch-action: none; user-select: none; }
.step-numbers, .row { display: grid; grid-template-columns: repeat(var(--steps), 1fr); }
.step-numbers { height: 20px; font: 10px ui-monospace, Menlo, monospace; color: var(--muted); }
.step-numbers span { padding: 3px 0 0 3px; }
.step-numbers span.now { background: hsl(var(--hue) var(--tint) / 0.35); color: var(--fg); }
.row { height: 24px; cursor: pointer; }
.row.black { background: var(--bg); }
.cell { border-left: 1px solid var(--line); border-bottom: 1px solid color-mix(in srgb, var(--line) 50%, transparent); }
.cell.beat { border-left-color: var(--line-strong); }
.cell.now { background: hsl(var(--hue) var(--tint) / 0.12); }
.cell.on { background: hsl(var(--hue) var(--tint)); border-color: hsl(var(--hue) var(--tint-line)); margin: 3px 0; }
.cell.on.start, .cell.on.single { margin-left: 2px; border-radius: 3px 0 0 3px; }
.cell.on.end, .cell.on.single { margin-right: 2px; border-radius: 0 3px 3px 0; }
.cell.on.single { border-radius: 3px; }
.cell.on.held, .cell.on.end { border-left-color: transparent; }
.cell.on.accent { background: hsl(var(--hue) var(--tint-hot)); box-shadow: 0 0 8px hsl(var(--hue) var(--tint-bright) / 0.6); }
.cell.on.now { filter: brightness(1.3); }
/* Pitched notes can be dragged to resize: say so with the cursor and a grip on the tail. */
.cells.pitched .cell.on { cursor: ew-resize; position: relative; }
.cells.pitched .cell.on.end::after, .cells.pitched .cell.on.single::after {
  content: ''; position: absolute; right: 3px; top: 25%; bottom: 25%; width: 2px; border-radius: 1px;
  background: hsl(var(--hue) var(--tint-fill) / 0.7);
}
.note-length { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; margin-bottom: 8px; font-size: 13px; }
.note-length span { margin-right: 4px; }
.note-length button { padding: 3px 9px; font: 12px ui-monospace, Menlo, monospace; }
.note-length button.active { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.hint { font-size: 12px; margin-top: 8px; }

.sequencer-choice { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; font-size: 13px; }
.kind-dot { color: hsl(var(--hue) var(--tint)); font-size: 9px; margin-right: 6px; vertical-align: 2px; }
/* The generative editors take the theme's colour, not their track's. */
.bounce-editor { --hue: var(--accent-hue); display: grid; grid-template-columns: minmax(0, 520px) minmax(240px, 320px); gap: 18px; align-items: start; }
.bounce-canvas { display: block; width: 100%; aspect-ratio: 1; touch-action: none; cursor: crosshair; border-radius: var(--radius); }
.bounce-controls .field.check input { justify-self: start; }
.bounce-controls .field { grid-template-columns: 92px minmax(0, 1fr) auto; }
.bounce-controls .field output { min-width: 60px; }
.ball-row { display: flex; align-items: center; gap: 6px; margin: 6px 0 2px; font-size: 13px; }
.ball-row span { flex: 1; }
.wall-tuning .field { grid-template-columns: 96px 1fr; }
.wall-tuning .field.selected > span { color: var(--fg); }
.tubule-canvas { cursor: pointer; }
.zone-grid { display: grid; grid-template-columns: 48px repeat(var(--sections), minmax(0, 1fr)); gap: 4px; align-items: center; font-size: 12px; }
.zone-grid button { padding: 4px 2px; font: 11px ui-monospace, Menlo, monospace; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.zone-grid button.active { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.zone-tune { display: flex; gap: 6px; margin-top: 8px; }
.zone-tune select { flex: 1; min-width: 0; }
.bounce-controls h4 .muted { font-weight: normal; font-size: 12px; margin-left: 4px; }

/* ---- song ---- */

.palette { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 16px; }
.chip { border-left: 3px solid hsl(var(--hue) var(--tint)); }
.arrangement { list-style: none; padding: 0; margin: 0 0 10px; display: grid; gap: 4px; }
.arrangement li { display: grid; grid-template-columns: 40px minmax(160px, 320px) 1fr; gap: 10px; align-items: start; }
.arrangement .bar { font: 11px ui-monospace, Menlo, monospace; color: var(--muted); text-align: right; padding-top: 11px; }
.arrangement .block {
  position: relative; overflow: hidden; display: flex; align-items: flex-start; gap: 8px; text-align: left;
  /* height follows length: a 16-step bar is 44px */
  height: max(36px, calc(var(--length) / 16 * 44px));
  background: hsl(var(--hue) var(--tint-fill)); border: 1px solid hsl(var(--hue) var(--tint-line)); padding: 9px 10px;
}
.arrangement .block:hover { border-color: hsl(var(--hue) var(--tint-bright)); }
.arrangement li.now .block { border-color: hsl(var(--hue) var(--tint-bright)); box-shadow: 0 0 0 1px hsl(var(--hue) var(--tint-bright)); }
.arrangement .name { font-weight: 600; position: relative; }
.arrangement .length { margin-left: auto; color: hsl(var(--hue) var(--tint-text)); font: 11px ui-monospace, Menlo, monospace; padding-top: 2px; position: relative; }
.arrangement .progress { position: absolute; left: 0; right: 0; top: 0; background: hsl(var(--hue) var(--tint-bright) / 0.18); pointer-events: none; }
.block-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 2px; padding-top: 3px; }
.block-actions button { padding: 3px 8px; font-size: 13px; }
.block-actions select { padding: 3px 6px; font-size: 13px; max-width: 160px; margin: 0 4px; }
.song-view .empty { padding: 32px; text-align: center; border: 1px dashed var(--line); border-radius: var(--radius); }

/* ---- visuals ---- */

.visuals { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 20px; align-items: start; }
.visuals-main { min-width: 0; }
.preview { display: block; width: 100%; aspect-ratio: 16 / 9; max-height: 52vh; border-radius: var(--radius); border: 1px solid var(--line); background: #000; margin-bottom: 14px; }
.viz-timeline { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; }
.viz-timeline li { display: grid; grid-template-columns: 44px minmax(120px, 200px) minmax(0, 1fr); gap: 10px; align-items: start; }
.viz-timeline .bar { font: 11px ui-monospace, Menlo, monospace; color: var(--muted); text-align: right; padding-top: 11px; }
.viz-timeline .block {
  display: flex; align-items: flex-start; gap: 8px; text-align: left; height: max(36px, calc(var(--length) / 16 * 40px));
  background: hsl(var(--hue) var(--tint-fill)); border: 1px solid hsl(var(--hue) var(--tint-line)); padding: 9px 10px; font-weight: 600;
}
.viz-timeline .block .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.viz-timeline .block.selected, .viz-timeline .block:hover { border-color: hsl(var(--hue) var(--tint-bright)); }
.viz-timeline .block.selected { box-shadow: 0 0 0 1px hsl(var(--hue) var(--tint-bright)); }
.viz-timeline li.now .block { background: hsl(var(--hue) var(--tint-fill-on)); }
.viz-timeline .swatch { width: 16px; height: 16px; border-radius: 50%; border: 3px solid; flex: none; }
.viz-blocks { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; min-height: 36px; }
.viz-block { background: var(--panel-2); border-color: var(--line); padding: 8px 12px; }
.viz-block small { color: var(--accent); }
.viz-block.selected { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.viz-block.continued { background: transparent; border-style: dashed; color: var(--muted); }
.viz-block.continued:hover { color: var(--fg); }
.viz-block.missing { color: var(--danger); border-style: dashed; }
.add-viz { border-style: dashed; color: var(--muted); max-width: 130px; }
.add-viz:hover, .add-viz.open { color: var(--fg); }
.add-viz.open { border-style: solid; border-color: var(--accent); }
.viz-block.pending { border: 1px dashed var(--accent); color: var(--accent); background: transparent; border-radius: var(--radius); font-size: 14px; }

/* the visual browser, opened under a block by + Visual */
.visuals.browsing .preview { position: sticky; top: 0; z-index: 2; }
.viz-browser {
  grid-column: 1 / -1; margin: 4px 0 12px; padding: 12px 14px 14px;
  background: var(--panel); border: 1px solid var(--line); border-top: 2px solid hsl(var(--hue) var(--tint)); border-radius: var(--radius);
}
.viz-browser > header { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 4px; }
.viz-browser > header > div { flex: 1 1 240px; font-size: 13px; }
.viz-browser > footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
.viz-browser h4 { margin: 14px 0 6px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.viz-browser h4 span { text-transform: none; letter-spacing: 0; font-weight: 400; margin-left: 6px; }
.viz-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 6px; }
.viz-card {
  position: relative; display: grid; align-content: start; gap: 3px; text-align: left; padding: 9px 30px 10px 11px;
  background: var(--panel-2); min-height: 72px;
}
.viz-card span { font-size: 12px; line-height: 1.35; color: var(--muted); }
.viz-card.picked { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
/* Already on the block: tinted in the block's colour, apart from new picks. */
.viz-card.added { background: hsl(var(--hue) var(--tint-fill-deep)); border-color: hsl(var(--hue) var(--tint-line)); }
.viz-card.removing { background: var(--panel-2); border-style: dashed; border-color: var(--danger); }
.viz-card.removing strong { text-decoration: line-through; color: var(--muted); }
.viz-card.removing em { color: var(--danger); background: color-mix(in srgb, var(--danger) 12%, transparent); }
.viz-block.removing { text-decoration: line-through; opacity: 0.5; border-style: dashed; }
.viz-card em {
  justify-self: start; margin-top: 4px; font-style: normal; font-size: 11px; font-weight: 600;
  color: hsl(var(--hue) var(--tint-text)); background: hsl(var(--hue) var(--tint-line) / 0.35); border-radius: 999px; padding: 1px 8px;
}
.viz-card i {
  position: absolute; top: 8px; right: 8px; width: 18px; height: 18px; border-radius: 50%;
  display: grid; place-items: center; font: 600 11px/1 ui-monospace, Menlo, monospace; font-style: normal;
  background: var(--accent); color: var(--on-accent);
}
.play-here { margin-left: auto; }

.visuals-config { position: sticky; top: 12px; display: grid; gap: 8px; }
.visuals-config .back { justify-self: start; padding-left: 0; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; }
.panel header { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.panel h3 { margin: 0; font-size: 15px; flex: 1; }
.panel h3 small { display: block; font-weight: 400; font-size: 12px; color: var(--muted); }
.panel h4 { margin: 14px 0 6px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.panel .hint { font-size: 12px; margin: 0 0 10px; }
.panel-actions { display: flex; }
.panel-actions button { padding: 3px 8px; }
.panel .field { display: grid; grid-template-columns: 96px 1fr auto auto; gap: 8px; align-items: center; margin-bottom: 6px; font-size: 13px; }
.panel .field > span { color: var(--muted); }
.panel .field select { min-width: 0; }
.panel .field output { font: 11px ui-monospace, Menlo, monospace; color: var(--muted); min-width: 56px; text-align: right; }
.panel .field.overridden > span { color: var(--fg); }
.panel .field.overridden > span::after { content: ' •'; color: var(--accent); }
.panel input[type=color] { width: 100%; height: 28px; padding: 2px; }
.panel input[type=range] { width: 100%; min-width: 0; }
.panel .reset { padding: 0 6px; }
.slot { border-top: 1px solid var(--line); padding: 8px 0 4px; }
.slot-head { display: grid; grid-template-columns: 96px 1fr; gap: 8px; align-items: center; font-size: 13px; }
.slot-name { font: 12px ui-monospace, Menlo, monospace; color: var(--fg); }
.slot-head select { min-width: 0; }
.slider { display: grid; grid-template-columns: 96px 1fr 56px; gap: 8px; align-items: center; font-size: 12px; margin-top: 4px; }
.slider > span { color: var(--muted); padding-left: 10px; }
.slider output { font: 11px ui-monospace, Menlo, monospace; color: var(--muted); text-align: right; }

@media (max-width: 900px) {
  .visuals { grid-template-columns: minmax(0, 1fr); }
  .visuals-config { position: static; }
}

@media (max-width: 720px) {
  .editor { padding: 10px 16px 32px; }
  .patterns { grid-template-columns: minmax(0, 1fr); }
  .pattern-list ul { display: flex; flex-wrap: wrap; gap: 4px; }
  .transport { margin-left: 0; }
  .arrangement li { grid-template-columns: 28px minmax(0, 1fr); }
  .block-actions { grid-column: 2; padding-top: 0; }
  .viz-timeline li { grid-template-columns: 36px minmax(0, 1fr); }
  .bounce-editor { grid-template-columns: minmax(0, 1fr); }
  .viz-blocks { grid-column: 2; }
}

/* ---- site shell: nav, buttons-as-links ---- */

header.site { gap: 16px; }
header.site .site-nav { display: flex; gap: 2px; flex: 1; }
header.site .site-nav a { padding: 5px 10px; border-radius: var(--radius); color: var(--muted); }
header.site .site-nav a:hover { color: var(--fg); }
header.site .site-nav a.active { color: var(--fg); background: var(--panel-2); }
header.site .me { display: flex; align-items: center; gap: 8px; color: var(--fg); }
header.site .me:hover span { text-decoration: underline; }
a.button {
  display: inline-block; background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 5px 11px; color: var(--fg);
}
a.button.primary { background: var(--accent); color: var(--on-accent); border-color: var(--accent); font-weight: 600; }
button.link { background: none; border: 0; padding: 0; color: var(--accent); cursor: pointer; }
.missing { padding: 48px; text-align: center; }
.empty-state { padding: 32px; text-align: center; border: 1px dashed var(--line); border-radius: var(--radius); color: var(--muted); }
.notice { color: var(--muted); }
.badge.public { color: var(--accent); border-color: var(--accent); }
.song-list h1, .profile h1, .song-page h1 { font-size: 22px; margin: 0 0 12px; }
.song-list h1 { margin-bottom: 18px; }

/* ---- tabs as buttons (the feed) ---- */

.tabs button { background: none; border: 0; border-bottom: 2px solid transparent; border-radius: 0; padding: 8px 14px; color: var(--muted); margin-bottom: -1px; }
.tabs button.active { color: var(--fg); border-bottom-color: var(--accent); }
.tabs button:hover:not(.active) { color: var(--fg); }

/* ---- feed & song cards ---- */

.feed { max-width: 720px; margin: 20px auto 40px; padding: 0 16px; }
.feed .tabs { margin: 0 0 18px; }
.song-cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.song-card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); padding: 12px 14px; display: grid; gap: 8px; }
.song-card-main { display: flex; gap: 12px; align-items: flex-start; color: var(--fg); }
.song-card-main:hover strong { color: var(--accent); }
.song-card .play-mark {
  flex: none; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: var(--panel-2); border: 1px solid var(--line); color: var(--accent); font-size: 12px; padding-left: 2px;
}
.song-card-main:hover .play-mark { border-color: var(--accent); }
.song-card-text { display: grid; gap: 2px; min-width: 0; padding-top: 6px; }
.song-card-text strong { font-size: 15px; }
.song-card-desc { color: var(--muted); font-size: 13px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.song-card-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; font-size: 13px; padding-left: 46px; }
.owner { display: inline-flex; align-items: center; gap: 6px; color: var(--fg); }
.owner:hover { text-decoration: underline; }
.owner img { width: 18px; height: 18px; border-radius: 50%; }
.load-more { display: block; margin: 16px auto 0; }

/* ---- genre tags & picker ---- */

.tag-chips { display: inline-flex; flex-wrap: wrap; gap: 4px; vertical-align: middle; }
.genre-tag { font-size: 11px; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 0 8px; line-height: 18px; }
.genre-picker { display: grid; gap: 6px; }
.genre-picker-head { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; margin-bottom: 6px; font-size: 13px; }
.genre-picker-head input { width: 180px; }
.genre-picker-head .muted { display: inline-flex; flex-wrap: wrap; gap: 4px; align-items: center; flex: 1; }
.genre-family { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 6px 10px; align-items: start; padding: 4px 0; border-top: 1px solid color-mix(in srgb, var(--line) 60%, transparent); }
.genre-list { display: flex; flex-wrap: wrap; gap: 4px; }
.genre-chip { font-size: 12px; padding: 2px 10px; border-radius: 999px; background: transparent; color: var(--muted); position: relative; }
.genre-chip.family { color: var(--fg); font-weight: 600; justify-self: start; }
.genre-chip:hover:not(:disabled) { color: var(--fg); }
.genre-chip.on { background: var(--accent); color: var(--on-accent); border-color: var(--accent); font-weight: 600; }
.genre-chip.small { padding: 0 8px; font-size: 11px; }
.genre-chip.suggested:not(.on)::after { content: ''; position: absolute; top: 3px; right: 3px; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }

/* ---- profile ---- */

.profile { max-width: 720px; margin: 24px auto 40px; padding: 0 16px; }
.profile-head { display: flex; gap: 18px; align-items: flex-start; margin-bottom: 28px; }
.profile-head img, .avatar-blank { width: 72px; height: 72px; border-radius: 50%; flex: none; }
.avatar-blank { display: grid; place-items: center; background: var(--panel-2); border: 1px solid var(--line); font-size: 28px; font-weight: 700; color: var(--muted); text-transform: uppercase; }
.profile-id { flex: 1; min-width: 0; }
.profile-id h1 { margin: 0; }
.profile .bio { margin: 8px 0 0; white-space: pre-wrap; }
.profile .interests { margin: 10px 0 0; font-size: 13px; }
.profile h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 0 0 8px; }
.profile-form { display: grid; gap: 14px; margin-bottom: 28px; }
.profile-form h2 { text-transform: none; letter-spacing: 0; font-size: 18px; color: var(--fg); margin: 0; }
.profile-form label, .field-label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
.profile-form label input, .profile-form textarea { color: var(--fg); font-size: 14px; }
.profile-form textarea, .publish textarea { width: 100%; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 6px 8px; font: inherit; color: inherit; resize: vertical; }
.handle-input { display: flex; align-items: center; gap: 4px; }
.handle-input input { flex: 1; }
.form-actions { display: flex; justify-content: flex-end; gap: 8px; }

/* ---- song page ---- */

.song-page { max-width: 1100px; margin: 16px auto 40px; padding: 0 16px; }
.stage { position: relative; }
.stage-canvas { display: block; width: 100%; aspect-ratio: 16 / 9; max-height: 72vh; border-radius: var(--radius); border: 1px solid var(--line); background: #000; cursor: pointer; }
.big-play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  display: flex; align-items: center; gap: 10px; padding: 14px 28px; font-size: 18px; font-weight: 600; border-radius: 999px;
  background: color-mix(in srgb, var(--bg) 75%, transparent); border: 1px solid var(--accent); color: var(--fg); backdrop-filter: blur(6px);
}
.big-play:hover:not(:disabled) { background: var(--accent); color: var(--on-accent); }
.big-play span { color: var(--accent); }
.big-play:hover:not(:disabled) span { color: inherit; }
.transport-row { display: flex; align-items: center; gap: 12px; margin: 12px 0 20px; }
.transport-row .play { min-width: 92px; font-weight: 600; }
.transport-row .play.on { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.song-timeline { flex: 1; display: flex; align-items: center; gap: 12px; min-width: 0; }
.segments { position: relative; flex: 1; display: flex; gap: 2px; height: 14px; }
.segment { flex: 1 1 0; min-width: 2px; padding: 0; border: 0; border-radius: 2px; background: hsl(var(--hue) var(--tint-dim)); }
.segment:hover { background: hsl(var(--hue) var(--tint-line)); }
.segment.now { background: hsl(var(--hue) var(--tint)); }
.playhead { position: absolute; top: -3px; bottom: -3px; width: 2px; background: var(--fg); pointer-events: none; }
.song-timeline .time { font: 12px ui-monospace, Menlo, monospace; color: var(--muted); white-space: nowrap; }
.song-head { display: flex; gap: 24px; align-items: flex-start; justify-content: space-between; }
.song-head .byline { display: flex; flex-wrap: wrap; align-items: center; gap: 2px; margin: 0 0 10px; }
.song-head .description { margin: 12px 0 0; max-width: 60ch; white-space: pre-wrap; color: var(--fg); }
.owner-tools { flex: none; display: grid; gap: 8px; justify-items: end; font-size: 13px; }
.owner-tools .notice { margin: 0; }
.song-page .cta { margin-top: 28px; }

/* ---- publish tab ---- */

.publish { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; align-items: start; }
.publish h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 0 0 10px; }
.publish h3 small { text-transform: none; letter-spacing: 0; font-weight: 400; }
.publish .publish-form h3 + .genre-picker { margin-bottom: 22px; }
.publish-status { position: sticky; top: 12px; }
.publish-status h3 { color: var(--fg); font-size: 15px; text-transform: none; letter-spacing: 0; }
.publish-status .share { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; word-break: break-all; }
.publish-status .form-actions { margin-top: 12px; }

@media (max-width: 900px) {
  .publish { grid-template-columns: minmax(0, 1fr); }
  .publish-status { position: static; }
}

@media (max-width: 720px) {
  header.site { padding: 10px 12px; gap: 10px; }
  header.site .me span { display: none; }
  .genre-family { grid-template-columns: minmax(0, 1fr); }
  .profile-head { flex-wrap: wrap; }
  .song-head { flex-direction: column; }
  .owner-tools { justify-items: start; }
}

/* ---- choosing a username ---- */

.choose-username { max-width: 420px; margin: 14vh auto 0; padding: 0 16px; }
.choose-username .panel { display: grid; gap: 10px; padding: 20px 22px 18px; }
.choose-username h1 { margin: 0; font-size: 22px; }
.choose-username p { margin: 0 0 6px; }
.choose-username .handle-input input { font-size: 16px; padding: 8px 10px; }
.choose-username .form-actions { margin-top: 8px; }

/* ---- themes: the picker and the settings page ---- */

.theme-picker { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 8px; }
/* Each card carries its theme's data-theme, so its tokens are that theme's. */
.theme-card {
  display: grid; gap: 6px; padding: 6px 6px 8px; text-align: left; position: relative;
  background: var(--bg); color: var(--fg); border: 1px solid var(--line); border-radius: var(--radius);
}
.theme-card:hover:not(:disabled) { border-color: var(--muted); }
.theme-card[aria-checked="true"] { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.theme-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.theme-card .swatch {
  display: grid; gap: 4px; padding: 6px; height: 54px; align-content: start;
  background: var(--panel); border: 1px solid var(--line); border-radius: 4px;
}
.theme-card .swatch i { display: block; height: 5px; border-radius: 3px; }
.theme-card .swatch .accent { background: var(--accent); width: 42%; }
.theme-card .swatch .text { background: var(--fg); width: 78%; }
.theme-card .swatch .muted { background: var(--muted); width: 58%; }
.theme-card .swatch .tint { display: flex; gap: 3px; height: 8px; margin-top: 2px; }
.theme-card .swatch .tint b { flex: 1; border-radius: 2px; background: hsl(var(--hue) var(--tint)); }
.theme-card strong { font-size: 13px; padding: 0 2px; }
.theme-card small { color: var(--muted); font-size: 11px; line-height: 1.3; padding: 0 2px; margin-top: -4px; }
.theme-card .check {
  position: absolute; top: 4px; right: 4px; width: 18px; height: 18px; border-radius: 50%;
  display: grid; place-items: center; font: 600 11px/1 ui-monospace, Menlo, monospace;
  background: var(--accent); color: var(--on-accent);
}

.settings { max-width: 640px; margin: 24px auto 40px; padding: 0 16px; display: grid; gap: 16px; }
.settings h1 { font-size: 22px; margin: 0 0 4px; }
.settings .panel { display: grid; gap: 10px; padding: 16px 18px; }
.settings .panel h2 { margin: 0; font-size: 16px; }
.settings .panel p { margin: 0; }
.settings .settings-status { font-size: 12px; min-height: 1.2em; }
.settings dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; margin: 0; font-size: 13px; }
.settings dt { color: var(--muted); }
.settings dd { margin: 0; }

header.site .user .settings-link { color: var(--muted); padding: 5px 8px; border-radius: var(--radius); }
header.site .user .settings-link:hover, header.site .user .settings-link.active { color: var(--fg); }
header.site .user .settings-link.active { background: var(--panel-2); }

.choose-username { max-width: 520px; }
.choose-username .field-label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); margin-top: 6px; }
