:root {
  color-scheme: dark;
  --bg: #11140f;
  --panel: #1b211b;
  --panel-2: #242d23;
  --ink: #f4f1e7;
  --muted: #b8bdad;
  --line: #3f4a3d;
  --green: #86d48b;
  --cyan: #75c5d8;
  --gold: #efc769;
  --rose: #ee7c7c;
  --violet: #b9a1f1;
  --canvas: #0b0f0d;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, sans-serif;
}

body {
  overflow-x: hidden;
}

button,
input,
select {
  font: inherit;
}

.app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 12px;
  padding: 16px;
}

.topbar,
.controls,
.view-panel,
.series-panel,
.explain-panel,
.mode-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
}

.topbar {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
}

.eyebrow,
h1,
h2,
p {
  margin: 0;
}

.eyebrow {
  color: var(--green);
  font-size: 12px;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(27px, 4vw, 44px);
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  font-size: 15px;
  letter-spacing: 0;
}

.tau-readout,
.panel-head span,
.control-pair label,
.series-grid span,
.explain-panel p {
  color: var(--muted);
}

.tau-readout {
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: clamp(14px, 2.4vw, 18px);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.workspace-shell {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(320px, 380px) minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.sidebar {
  min-width: 0;
  display: grid;
  gap: 12px;
  position: sticky;
  top: 12px;
}

.controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: center;
  padding: 12px;
}

.control-pair {
  min-width: 0;
  display: grid;
  grid-template-columns: 62px minmax(120px, 1fr) 82px;
  gap: 8px;
  align-items: center;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--green);
}

input[type="number"] {
  width: 100%;
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0d110f;
  color: var(--ink);
  padding: 6px 8px;
  font-family: "Cascadia Mono", Consolas, monospace;
}

select {
  min-height: 32px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0d110f;
  color: var(--ink);
  padding: 5px 8px;
}

.button-row,
.tabs,
.mini-toolbar,
.mode-tabs,
.coefficient-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

button {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--ink);
  padding: 7px 10px;
  cursor: pointer;
}

button:hover,
button.active {
  border-color: var(--green);
  background: #2b392b;
}

.view-grid {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  grid-template-rows: minmax(225px, 0.92fr) minmax(225px, 0.92fr) minmax(340px, 1.2fr);
  gap: 12px;
}

.view-panel {
  min-width: 0;
  min-height: 220px;
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
}

.pattern-panel {
  grid-column: 1 / -1;
  grid-template-rows: auto auto auto 1fr;
}

.primary {
  border-color: #5a6a55;
}

.panel-head {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
}

.panel-head span {
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.mini-toolbar {
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 8px 12px;
}

.mini-toolbar button {
  min-height: 32px;
  padding: 5px 10px;
}

.stage-label {
  border-bottom: 1px solid var(--line);
  padding: 6px 12px;
  color: var(--muted);
  background: rgba(15, 20, 16, 0.72);
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 12px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.select-control {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  background: var(--canvas);
}

.details {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.series-panel,
.explain-panel,
.mode-panel {
  overflow: hidden;
}

.series-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
}

.series-item {
  min-width: 0;
  display: grid;
  gap: 4px;
  background: #151a16;
  padding: 10px 12px;
}

.series-item strong {
  font-size: 13px;
  color: var(--ink);
}

.series-item code {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--green);
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
}

.explain-panel {
  display: grid;
  grid-template-rows: auto auto 1fr;
}

.tabs {
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
}

.tabs button {
  min-height: 32px;
  padding: 5px 9px;
}

.explain-panel p {
  line-height: 1.75;
  padding: 14px 12px 16px;
}

.mode-tabs {
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
}

.mode-tabs button {
  min-height: 32px;
  padding: 5px 9px;
}

.mode-body {
  display: none;
  gap: 10px;
  padding: 12px;
}

.mode-body.active {
  display: grid;
}

.stacked {
  display: grid;
  gap: 6px;
  color: var(--muted);
}

.compact {
  grid-template-columns: 24px minmax(110px, 1fr) 72px;
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #10140f;
}

.mode-readout {
  display: grid;
  gap: 5px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
  color: var(--muted);
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 12px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.mode-readout strong {
  color: var(--ink);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 13px;
}

.ap-table {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 4px 8px;
}

.ap-table span {
  border: 1px solid rgba(83, 96, 80, 0.7);
  border-radius: 5px;
  padding: 4px 6px;
  background: rgba(16, 20, 15, 0.72);
}

.coeff-table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(16, 20, 15, 0.62);
  border: 1px solid rgba(83, 96, 80, 0.7);
  border-radius: 5px;
  display: block;
  max-height: 260px;
  overflow: auto;
}

.coeff-table thead,
.coeff-table tbody,
.coeff-table tr {
  display: table;
  width: 100%;
  table-layout: fixed;
}

.coeff-table th,
.coeff-table td {
  border-bottom: 1px solid rgba(83, 96, 80, 0.42);
  padding: 4px 6px;
  text-align: left;
  vertical-align: top;
}

.coeff-table th {
  color: var(--ink);
  font-weight: 600;
  background: rgba(43, 54, 41, 0.78);
  position: sticky;
  top: 0;
}

.preset-watch-list {
  margin: 4px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.preset-watch-list li + li {
  margin-top: 2px;
}

.coefficient-row {
  align-items: center;
}

.coefficient-row label {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: 6px;
  align-items: center;
  color: var(--muted);
}

.coefficient-row .toggle-line {
  grid-template-columns: auto 1fr;
  min-height: 36px;
}

.preset-row label {
  grid-template-columns: 54px 1fr;
  grid-column: 1 / -1;
}

.mode-body > button {
  width: 100%;
}

.small-canvas {
  width: 100%;
  height: 180px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.atlas-list {
  display: grid;
  gap: 10px;
}

.atlas-card {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #121712;
  padding: 8px;
}

.atlas-card canvas {
  width: 96px;
  height: 96px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #f4f1e7;
  cursor: pointer;
}

.atlas-card canvas:hover,
.atlas-card canvas:focus {
  border-color: var(--gold);
  outline: 2px solid rgba(239, 199, 105, 0.3);
  outline-offset: 2px;
}

.atlas-card h3 {
  margin: 0 0 5px;
  color: var(--ink);
  font-size: 14px;
  letter-spacing: 0;
}

.atlas-card code {
  display: block;
  color: var(--green);
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 12px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

@media (max-width: 420px) {
  .atlas-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 980px) {
  .app {
    grid-template-rows: auto auto;
  }

  .controls,
  .view-grid,
  .details,
  .workspace-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .view-grid {
    grid-template-rows: repeat(4, 280px) 320px;
  }

  .pattern-panel {
    grid-column: auto;
  }
}

@media (max-width: 620px) {
  .app {
    padding: 10px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .tau-readout {
    text-align: left;
  }

  .control-pair {
    grid-template-columns: 1fr;
  }

  .button-row button {
    flex: 1 1 120px;
  }

  .series-grid {
    grid-template-columns: 1fr;
  }
}