#gen-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ── Tab bar ─────────────────────────────────────────────────── */
#gen-tab-bar {
  flex: 0 0 auto;
  display: flex;
  align-items: stretch;
  gap: 0;
  background: var(--bg-1);
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
}

.gen-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 16px;
  height: 36px;
  cursor: pointer;
  transition: color 0.1s;
}
.gen-tab:hover  { color: var(--text-primary); background: none; }
.gen-tab.active { color: var(--accent-bright); border-bottom-color: var(--accent); }

/* ── Panels container ────────────────────────────────────────── */
#gen-panels {
  flex: 1;
  overflow: hidden;
}

.gen-panel {
  display: flex;
  height: 100%;
  overflow: hidden;
}

/* ── Split layout (left vis + right controls) ────────────────── */
.gen-split {
  display: flex;
  width: 100%;
  height: 100%;
  overflow: hidden;
  padding: 20px;
  gap: 20px;
}

/* ── Left: visualisation ─────────────────────────────────────── */
.gen-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  min-width: 0;
  overflow: hidden;
}

.gen-vis-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-bright);
  align-self: flex-start;
}

/* Euclidean ring */
#ring-wrap {
  width: 100%;
  max-width: 280px;
  aspect-ratio: 1;
}
#ring-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Markov pitch trace */
#markov-vis-wrap {
  width: 100%;
  flex: 1;
  min-height: 120px;
  max-height: 300px;
}
#markov-vis-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Strip (shared) */
.strip-wrap {
  width: 100%;
  max-width: 100%;
}
.strip-label {
  font-size: 10px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 5px;
}
#strip-canvas,
#markov-strip-canvas {
  width: 100%;
  height: 28px;
  display: block;
}

/* ── Right: controls panel ───────────────────────────────────── */
.gen-right {
  width: 300px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-y: auto;
}

.gen-section {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.gen-section:last-child { border-bottom: none; }

.gen-section-heading {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.gen-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.gen-row:last-child { margin-bottom: 0; }

.gen-row label {
  width: 52px;
  flex-shrink: 0;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.gen-row input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
}

.val-readout {
  width: 38px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-primary);
  flex-shrink: 0;
}

.gen-row input[type="number"] {
  width: 52px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
}

.note-chip {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-bright);
  width: 34px;
}

/* Action buttons */
.gen-actions-section { display: flex; flex-direction: column; gap: 7px; }

.gen-generate-btn {
  padding: 7px;
  font-size: 11px;
  color: var(--amber);
  border-color: var(--amber-dim);
}
.gen-generate-btn:hover { border-color: var(--amber); }

.gen-send-btn {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent-bright);
  font-weight: 600;
  padding: 8px;
  font-size: 12px;
}
.gen-send-btn:hover { background: var(--accent); color: #fff; }

.gen-dl-btn { padding: 7px; font-size: 11px; }

/* ── Markov: notes list ──────────────────────────────────────── */
.add-note-btn {
  font-size: 10px;
  padding: 2px 7px;
  margin-left: auto;
  color: var(--green);
  border-color: var(--green-dim);
}
.add-note-btn:hover { border-color: var(--green); }

.markov-note-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 5px;
}
.markov-note-row:last-child { margin-bottom: 0; }

.markov-note-name {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-bright);
  width: 32px;
  flex-shrink: 0;
}

.markov-note-input {
  width: 52px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
}

.markov-rm-btn {
  font-size: 10px;
  padding: 2px 5px;
  color: var(--red);
  border-color: transparent;
  background: none;
}
.markov-rm-btn:hover { border-color: var(--red); background: var(--red-dim); }

/* ── Markov: transition matrix ───────────────────────────────── */
.matrix-hint {
  font-size: 9px;
  color: var(--text-dim);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

.matrix-scroll {
  overflow-x: auto;
  overflow-y: visible;
}

.markov-matrix {
  border-collapse: collapse;
  font-size: 10px;
  white-space: nowrap;
}

.markov-matrix th,
.markov-matrix td {
  padding: 2px 3px;
  text-align: center;
}

.markov-matrix thead th {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--accent-bright);
  padding-bottom: 4px;
}

.markov-matrix .matrix-corner {
  color: var(--text-dim);
  font-size: 9px;
  text-align: left;
  padding-right: 6px;
  font-family: var(--font);
  font-weight: 400;
}

.markov-matrix tbody th {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: right;
  padding-right: 6px;
}

.markov-matrix td input {
  width: 30px;
  height: 26px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 0;
}

.markov-matrix td input.diag {
  background: var(--bg-2);
  color: var(--text-dim);
}

.markov-matrix td input:focus {
  outline: 1px solid var(--accent);
  border-color: var(--accent);
}