:root {
  --bg: #0b0e14;
  --panel-bg: #12161f;
  --border: #232838;
  --text: #dfe4ee;
  --text-dim: #8891a5;
  --accent: #5eb3ff;
  --accent-2: #ff9d5e;
  --font-ui: system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, Menlo, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  line-height: 1.5;
}

.q-header {
  padding: 2.5rem 1.5rem 1.5rem;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.q-header h1 {
  margin: 0 0 0.5rem;
  font-size: 1.8rem;
}

.q-header p {
  color: var(--text-dim);
  margin: 0;
}

.q-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

.viz-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 720px) {
  .viz-grid { grid-template-columns: 1fr; }
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

.panel h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dim);
}

.canvas-wrap {
  width: 100%;
  height: 320px;
  border-radius: 6px;
  overflow: hidden;
  background: #05070c;
}

.readout {
  margin: 0.75rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  white-space: pre-wrap;
}

/* ---------- Mode toggle (Animate / Manual) ---------- */

.mode-toggle {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 0.75rem;
}

.mode-toggle button {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}

.mode-toggle button.active {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

/* ---------- Sync toolbar (Sync values / Sync views) ---------- */

.sync-toolbar {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.sync-toolbar button {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
}

.sync-toolbar button.active {
  color: var(--bg);
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.sync-toolbar button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ---------- Manual controls ---------- */

.manual-controls-toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 0.75rem;
}

.manual-controls-toolbar button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0.35rem 0.9rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
}

.manual-controls-toolbar button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.manual-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 720px) {
  .manual-fields { grid-template-columns: 1fr; }
}

.manual-controls.readonly {
  opacity: 0.55;
}

fieldset {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

legend {
  padding: 0 0.5rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

fieldset label {
  display: grid;
  grid-template-columns: 70px 1fr 40px;
  align-items: center;
  gap: 0.5rem;
  margin: 0.5rem 0;
  font-size: 0.85rem;
}

fieldset input:disabled {
  cursor: not-allowed;
}

.hint {
  margin-top: 1rem;
  color: var(--accent-2);
  font-size: 0.85rem;
}

.q-footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
  padding: 2rem 1rem;
}