/* Genryu: design tokens and layout. Vanilla CSS, no build step.
   Warm paper and ink, a serif for the words that matter, the family colours for the data. */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #15120f;
  --surface: #1d1915;
  --surface-2: #26201a;
  --surface-3: #302921;
  --border: #342c24;
  --border-strong: #4a4035;
  --control-border: #6b6052;
  --text: #efe9df;
  --text-dim: #b5aa9a;
  --text-faint: #908677;
  --accent: #e8a95b;
  --accent-text: #e8a95b;
  --on-accent: #22160a;
  --accent-soft: rgba(232, 169, 91, 0.16);
  --focus: #8cc8ff;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --font: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Segoe UI", Roboto, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  /* family colours: one hue per family, stepped for each theme and checked with the
     dataviz palette validator (lightness band, chroma, adjacent-lane CVD separation,
     normal-vision separation, 3:1 contrast against the surface) */
  --f-roots: #d25024;
  --f-jazz: #8e48b5;
  --f-country: #cf7803;
  --f-rock: #bc3c7a;
  --f-metal: #4579e5;
  --f-punk: #a83e9a;
  --f-alternative: #19a090;
  --f-pop: #7155c9;
  --f-soul: #e85d6b;
  --f-hiphop: #856200;
  --f-electronic: #009edb;
  --f-reggae: #0a7a48;
  --f-latin: #9f9600;
  /* the same hues as text: lane names need 4.5:1 on the surface, where several of the bar colours only reach 3:1 */
  --f-roots-text: #dd6238;
  --f-jazz-text: #a871c7;
  --f-country-text: #cf7803;
  --f-rock-text: #cd6396;
  --f-metal-text: #5584e7;
  --f-punk-text: #c563b8;
  --f-alternative-text: #19a090;
  --f-pop-text: #907ad5;
  --f-soul-text: #e85d6b;
  --f-hiphop-text: #ae8000;
  --f-electronic-text: #009edb;
  --f-reggae-text: #0d9b5b;
  --f-latin-text: #9f9600;
  --seq-note: #efe9df;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f6f2ea;
  --surface: #fffdf8;
  --surface-2: #f1ece2;
  --surface-3: #e9e2d5;
  --border: #e2dacc;
  --border-strong: #cfc5b4;
  --control-border: #8c8271;
  --text: #231e18;
  --text-dim: #5f574c;
  --text-faint: #6e665a;
  --accent: #a35b12;
  --accent-text: #8c4e0b;
  --on-accent: #ffffff;
  --accent-soft: rgba(163, 91, 18, 0.14);
  --focus: #1a63c4;
  --shadow: 0 18px 50px rgba(60, 40, 10, 0.14);
  --f-roots: #c64515;
  --f-jazz: #a05ac8;
  --f-country: #ce7802;
  --f-rock: #a52567;
  --f-metal: #2354bd;
  --f-punk: #ce64bf;
  --f-alternative: #008779;
  --f-pop: #6447ba;
  --f-soul: #e85d6b;
  --f-hiphop: #7d5d03;
  --f-electronic: #0689be;
  --f-reggae: #006539;
  --f-latin: #928a00;
  --f-roots-text: #c14315;
  --f-jazz-text: #974bc3;
  --f-country-text: #a15e02;
  --f-rock-text: #a52567;
  --f-metal-text: #2354bd;
  --f-punk-text: #b439a3;
  --f-alternative-text: #007a6e;
  --f-pop-text: #6447ba;
  --f-soul-text: #d51e31;
  --f-hiphop-text: #7d5d03;
  --f-electronic-text: #0575a3;
  --f-reggae-text: #006539;
  --f-latin-text: #766f00;
  --seq-note: #231e18;
  color-scheme: light;
}

html {
  font-size: 106.25%;
  -webkit-text-size-adjust: 100%;
  overflow-y: scroll;
  scroll-behavior: smooth;
}

/* the genre panel is modal: the page behind it must not scroll (body overflow has no effect while html scrolls) */
html.modal-open {
  overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

button,
select,
input {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

svg {
  display: block;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

h1,
h2,
.detail-top h2,
.family-card h3,
.detail-section h3 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.012em;
  text-wrap: balance;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* --- Header --- */

.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 100;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 12px;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 22px;
  min-width: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  text-decoration: none;
  white-space: nowrap;
}

.brand svg {
  width: 26px;
  height: 26px;
  color: var(--accent);
}

.site-nav {
  display: flex;
  gap: 2px;
}

.site-nav a {
  padding: 6px 11px;
  border-radius: 999px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.92rem;
}

.site-nav a:hover {
  color: var(--text);
  background: var(--surface-2);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--text-dim);
  text-decoration: none;
}

.icon-btn:hover {
  color: var(--text);
  background: var(--surface-2);
}

.icon-btn svg {
  width: 20px;
  height: 20px;
}

.icon-btn.text {
  font-size: 0.92rem;
  font-weight: 500;
}

/* --- Page --- */

.page {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-block: 0 56px;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

.hero {
  padding: 64px 0 24px;
  max-width: 820px;
}

.hero h1 {
  font-size: clamp(2rem, 4.6vw, 3.1rem);
  line-height: 1.1;
  margin-bottom: 16px;
}

.hero-intro {
  color: var(--text-dim);
  font-size: 1.15rem;
  line-height: 1.55;
  max-width: 660px;
}

.hero .count {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}

section {
  margin-top: 72px;
}

section > h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  line-height: 1.15;
  margin-bottom: 8px;
}

.section-hint {
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.55;
  max-width: 720px;
  margin-bottom: 18px;
}

.status {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text-dim);
}

/* --- Buttons and chips --- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 7px 16px;
  border: 1px solid var(--control-border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.2;
}

.btn:hover {
  background: var(--surface-2);
}


.btn svg {
  width: 18px;
  height: 18px;
}

.link-btn {
  border: 0;
  background: none;
  color: var(--text-dim);
  font-size: 0.85rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 4px 2px;
}

.link-btn:hover {
  color: var(--text);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px 7px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text);
  font-size: 1rem;
  text-decoration: none;
  line-height: 1.25;
}

.chip i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--family);
  flex: none;
}

.chip:hover {
  border-color: var(--family);
  background: var(--surface-3);
}


/* family colour per element: nodes, edges, legend, chips */
[data-family="roots"] { --family: var(--f-roots); --family-text: var(--f-roots-text); }
[data-family="jazz"] { --family: var(--f-jazz); --family-text: var(--f-jazz-text); }
[data-family="country"] { --family: var(--f-country); --family-text: var(--f-country-text); }
[data-family="rock"] { --family: var(--f-rock); --family-text: var(--f-rock-text); }
[data-family="metal"] { --family: var(--f-metal); --family-text: var(--f-metal-text); }
[data-family="punk"] { --family: var(--f-punk); --family-text: var(--f-punk-text); }
[data-family="alternative"] { --family: var(--f-alternative); --family-text: var(--f-alternative-text); }
[data-family="pop"] { --family: var(--f-pop); --family-text: var(--f-pop-text); }
[data-family="soul"] { --family: var(--f-soul); --family-text: var(--f-soul-text); }
[data-family="hiphop"] { --family: var(--f-hiphop); --family-text: var(--f-hiphop-text); }
[data-family="electronic"] { --family: var(--f-electronic); --family-text: var(--f-electronic-text); }
[data-family="reggae"] { --family: var(--f-reggae); --family-text: var(--f-reggae-text); }
[data-family="latin"] { --family: var(--f-latin); --family-text: var(--f-latin-text); }

/* --- Tree --- */

.tree-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 10px 16px;
  margin-bottom: 12px;
}

.tree-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  flex: 1 1 520px;
  min-width: 0;
}

.legend-hint {
  width: 100%;
  font-size: 0.8rem;
  color: var(--text-faint);
}

.swatch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.2;
}

.swatch i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--family);
}

.swatch:hover {
  color: var(--text);
  border-color: var(--family);
}

.swatch[aria-pressed="true"] {
  color: var(--text);
  border-color: var(--family);
  background: color-mix(in srgb, var(--family) 18%, var(--surface));
  font-weight: 600;
}

.tree-controls {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.tree-controls button {
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--control-border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.9rem;
}

.tree-controls button:hover {
  background: var(--surface-2);
}

.tree-controls button[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
}

.tree-wrap {
  position: relative;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  max-height: min(78vh, 900px);
  overscroll-behavior-x: contain;
}

.tree-axis {
  position: sticky;
  top: 0;
  z-index: 2;
  height: 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.tree-axis span {
  position: absolute;
  top: 5px;
  transform: translateX(-50%);
  font-size: 0.76rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}

.tree-zoom {
  transform-origin: 0 0;
}

.tree-svg {
  font-family: var(--font);
}

.tree-lane-bg {
  fill: transparent;
  transition: opacity 0.15s ease;
}

.tree-lane:nth-child(even) .tree-lane-bg {
  fill: var(--surface-2);
  opacity: 0.6;
}

.tree-lane-line {
  stroke: var(--border);
  stroke-width: 1;
}

.tree-lane-bar {
  fill: var(--family);
}

.tree-lane-label {
  font-size: 17px;
  font-weight: 700;
  fill: var(--family-text, var(--family));
  letter-spacing: 0.01em;
}

.tree-lane-off .tree-lane-label,
.tree-lane-off .tree-lane-bar {
  opacity: 0.3;
}

.tree-grid-line {
  stroke: var(--border);
  stroke-width: 1;
  stroke-dasharray: 2 6;
}

.tree-edge {
  fill: none;
  stroke: var(--family, var(--text-faint));
  stroke-width: 1.8;
  stroke-linecap: round;
  opacity: 0.6;
  transition: opacity 0.15s ease;
}

.tree-edge-influence {
  stroke-dasharray: 1 4;
  stroke-width: 1.6;
  opacity: 0.4;
}

.tree-edge-backlash {
  stroke-dasharray: 6 4;
  stroke-width: 1.4;
  opacity: 0.4;
}

.tree-focus .tree-edge-dim,
.tree-edge-off {
  opacity: 0.06;
}

.tree-edge-lit {
  opacity: 1;
  stroke-width: 2.6;
}

.tree-node {
  cursor: pointer;
  outline: none;
}

.tree-node-bg {
  fill: var(--surface-3);
  stroke: var(--border-strong);
  stroke-width: 1;
  transition: opacity 0.15s ease;
}

.tree-node-bar {
  fill: var(--family);
}

.tree-node-text {
  font-size: 16px;
  font-weight: 500;
  fill: var(--text);
}

.tree-node-sub {
  font-size: 12px;
  fill: var(--text-dim);
}

.tree-node:hover .tree-node-bg,
.tree-node-related .tree-node-bg {
  stroke: var(--family);
  stroke-width: 1.5;
}

.tree-node:focus-visible .tree-node-bg {
  stroke: var(--focus);
  stroke-width: 2.5;
}

.tree-node:focus-visible {
  opacity: 1;
}

.tree-node-selected .tree-node-bg {
  fill: var(--family);
  stroke: var(--family);
}

.tree-node-selected .tree-node-text {
  fill: var(--bg);
  font-weight: 700;
}

.tree-node-selected .tree-node-bar {
  fill: var(--bg);
}

.tree-node-selected .tree-node-sub {
  fill: var(--bg);
  opacity: 0.85;
}

.tree-focus .tree-node-dim,
.tree-node-off {
  opacity: 0.3;
}

.tree-node-off.tree-node-dim {
  opacity: 0.15;
}

.tree-key {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.edge-key {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.edge-key svg {
  width: 34px;
  height: 10px;
}

.edge-key line {
  stroke: var(--text-dim);
  stroke-width: 2;
  stroke-linecap: round;
}

.edge-key.influence line {
  stroke-dasharray: 1 4;
}

.edge-key.backlash line {
  stroke-dasharray: 6 4;
}

/* --- Families --- */

.families {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  gap: 16px;
}

.family-card {
  position: relative;
  padding: 18px 20px 20px;
  border: 1px solid var(--border);
  border-top: 4px solid var(--family);
  border-radius: var(--radius);
  background: var(--surface);
  min-width: 0;
}

.family-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.family-card h3 {
  font-size: 1.35rem;
  line-height: 1.2;
  color: var(--text);
}

.family-blurb {
  margin-top: 8px;
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.5;
}

.family-meta {
  margin: 10px 0 12px;
  color: var(--text-faint);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
}


/* --- Detail panel (dialog) --- */

.detail {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: none;
  align-items: stretch;
  justify-content: flex-end;
  background: rgba(0, 0, 0, 0.5);
  border: 0;
  padding: 0;
  max-width: none;
  max-height: none;
  width: 100%;
  height: 100%;
  /* a modal dialog scrolls by default; the panel is the only scroller, so a wheel over
     the backdrop must move nothing */
  overflow: hidden;
}

.detail[open] {
  display: flex;
}

.detail-panel {
  position: relative; /* absolutely placed descendants (the live region) belong to the panel, not the dialog */
  overscroll-behavior: contain;
  width: min(840px, 100%);
  height: 100%;
  overflow-y: auto;
  background: var(--bg);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 0 0 48px;
}

.detail-head {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.detail-head .btn {
  min-height: 36px;
  padding: 5px 14px;
}

.detail-head .spacer {
  flex: 1;
}

.detail-body {
  padding: 26px 32px;
}

.family-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--family) 16%, var(--surface));
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
}

.family-pill i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--family);
}

.detail-top h2 {
  font-size: clamp(2rem, 4.2vw, 2.9rem);
  line-height: 1.05;
  margin: 12px 0 8px;
  outline: none;
}

.detail-sub {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-dim);
  font-size: 1.05rem;
}

.detail-sub .dot {
  color: var(--text-faint);
}

.lineage {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 22px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.lineage-col h3 {
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 8px;
}

.lineage .chip {
  padding: 6px 13px 6px 10px;
  font-size: 0.97rem;
}

.lineage .none {
  color: var(--text-faint);
  font-size: 0.9rem;
}

.detail-desc {
  font-size: 1.06rem;
  line-height: 1.7;
  color: var(--text);
  margin-top: 26px;
  max-width: 68ch;
}

.detail-desc p + p {
  margin-top: 12px;
}

.detail-section {
  margin-top: 40px;
}

.detail-section h3 {
  font-size: 1.45rem;
  line-height: 1.2;
  margin-bottom: 8px;
}

.detail-section .section-hint {
  margin-bottom: 14px;
}

.artists {
  list-style: none;
  display: grid;
  gap: 8px;
}

.artist {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.artist .name {
  font-weight: 600;
}

.artist .zh-name {
  color: var(--text-dim);
  font-weight: 400;
  margin-left: 6px;
}

.artist .works {
  margin-top: 3px;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.55;
}

.artist .work + .work::before {
  content: " · ";
  color: var(--text-faint);
}

.artist .work em {
  font-style: italic;
  color: var(--text);
}

.artist .work-year {
  font-variant-numeric: tabular-nums;
}

.artist .work .kind {
  color: var(--text-faint);
  font-size: 0.84rem;
}

.detail-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

/* --- Player --- */

.player {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.share-field {
  width: 100%;
  margin-top: 10px;
  padding: 8px 10px;
  border: 1px solid var(--control-border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 0.88rem;
}

.sketch-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.sketch-tab {
  height: 34px;
  padding: 0 14px;
  border: 1px solid var(--control-border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.88rem;
}

.sketch-tab:hover {
  background: var(--surface-2);
}

.sketch-tab[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
}

.player-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.player-bar .meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 14px;
  color: var(--text-dim);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

.player-bar .meta .pace {
  font-weight: 600;
  color: var(--text);
}

.player-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-left: auto;
}

.player-controls label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--text-dim);
}

.player-controls input[type="range"] {
  width: 96px;
  accent-color: var(--accent);
}

.play-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 48px;
  height: 48px;
  padding: 0 20px 0 16px;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
  font-size: 1rem;
}

.play-btn:hover {
  filter: brightness(1.06);
}

.play-btn svg {
  width: 20px;
  height: 20px;
}

.player-status {
  min-height: 1.2em;
  padding: 0 14px 6px;
  font-size: 0.82rem;
  color: var(--text-faint);
}

.seq {
  display: grid;
  grid-template-columns: 208px 1fr;
}

.seq-labels {
  border-right: 1px solid var(--border);
  background: var(--surface);
}

.seq-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 0 8px 0 12px;
}

.seq-label-ruler {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.seq-label-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.2;
}

.seq-label-name {
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.seq-label-inst {
  font-size: 0.76rem;
  color: var(--text-faint);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.seq-label-muted .seq-label-name,
.seq-label-muted .seq-label-inst {
  color: var(--text-faint);
}

.seq-btns {
  display: flex;
  gap: 4px;
  flex: none;
}

.seq-btn {
  width: 30px;
  height: 30px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: transparent;
  color: var(--text-dim);
}

.seq-btn svg {
  width: 16px;
  height: 16px;
}

.seq-btn:hover {
  color: var(--text);
  background: var(--surface-2);
}

.seq-mute .cross {
  display: none;
}

.seq-mute[aria-pressed="true"] {
  background: var(--surface-3);
  color: var(--text);
  border-color: var(--control-border);
}

.seq-mute[aria-pressed="true"] .wave {
  display: none;
}

.seq-mute[aria-pressed="true"] .cross {
  display: block;
}

.seq-solo[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

.seq-scroll {
  overflow-x: auto;
  overscroll-behavior-x: contain;
}

.seq-svg {
  font-family: var(--font);
}

.seq-ruler-text {
  font-size: 12px;
  font-weight: 600;
  fill: var(--text-faint);
}

.seq-bar {
  stroke: var(--control-border);
  stroke-width: 1;
}

.seq-beat {
  stroke: var(--border);
  stroke-width: 1;
}

.seq-row-bg {
  fill: var(--surface-2);
  opacity: 0.55;
}

.seq-hit {
  fill: var(--family, var(--accent));
}

.seq-hit-open {
  fill: none;
  stroke: var(--family, var(--accent));
  stroke-width: 2;
}

.seq-hit-ghost {
  opacity: 0.5;
}

.seq-note {
  fill: var(--family, var(--accent));
  opacity: 0.9;
}

.seq-note-accent {
  stroke: var(--seq-note);
  stroke-width: 1;
}

.seq-chord {
  font-size: 11px;
  fill: var(--text-dim);
  font-weight: 600;
}

.seq-row-muted .seq-hit,
.seq-row-muted .seq-note {
  opacity: 0.16;
}

.seq-row-muted .seq-chord {
  opacity: 0.4;
}

.seq-playhead {
  stroke: var(--text);
  stroke-width: 2;
  pointer-events: none;
}

.listen {
  margin-top: 14px;
  padding: 14px 18px;
  border-left: 3px solid var(--family, var(--accent));
  background: var(--surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-dim);
  font-size: 0.97rem;
  line-height: 1.6;
}

.listen strong {
  display: block;
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

/* --- About and footer --- */

.about p {
  max-width: 720px;
  color: var(--text-dim);
  margin-bottom: 12px;
  line-height: 1.6;
}

.about ul {
  padding-left: 20px;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.site-footer {
  margin-top: 48px;
  padding: 22px 16px 32px;
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 0.85rem;
  text-align: center;
}

.site-footer a {
  color: var(--text-dim);
}

/* --- Responsive --- */

@media (max-width: 760px) {
  .site-nav {
    display: none;
  }

  .hero {
    padding-top: 36px;
  }

  section {
    margin-top: 52px;
  }

  .tree-controls {
    margin-left: 0;
  }

  .detail-panel {
    width: 100%;
  }

  .detail-body {
    padding: 18px 16px;
  }

  .player-controls {
    margin-left: 0;
  }

  .seq {
    grid-template-columns: 148px 1fr;
  }

  .seq-label {
    padding: 0 5px 0 8px;
    gap: 4px;
  }

  .seq-btns {
    gap: 3px;
  }

  .seq-label-inst {
    display: none;
  }

  .seq-label-name {
    white-space: normal;
    font-size: 0.8rem;
    line-height: 1.15;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }

  .seq-btn {
    width: 26px;
    height: 26px;
    border-radius: 7px;
  }

  .player-controls input[type="range"] {
    width: 76px;
  }
}

@media (pointer: coarse) {
  .seq-btn {
    width: 36px;
    height: 36px;
  }
}

@media (forced-colors: active) {
  .chip,
  .swatch,
  .seq-btn {
    forced-color-adjust: none;
    border: 1px solid CanvasText;
  }
  .tree-node-bg {
    forced-color-adjust: none;
    stroke: CanvasText;
  }
  .tree-node-selected .tree-node-bg {
    fill: Highlight;
  }
  .tree-node-selected .tree-node-text {
    fill: HighlightText;
  }
}

@media print {
  .site-header,
  .tree-toolbar,
  .tree-key,
  .player,
  .detail-head {
    display: none;
  }
  .tree-wrap,
  .detail-panel {
    max-height: none;
    overflow: visible;
  }
}