:root {
    --bg: #0f172a;
    --canvas-bg: #071020;
    --muted: rgba(255, 255, 255, 0.06);
    --text: #e6eef8;
    --accent: #7cb7ff;
    --panel: rgba(255, 255, 255, 0.02);
    --radius: 12px;
    --gap: 14px;
    --max-width: 1200px;
}

* {
    box-sizing: border-box
}

html,
body {
    height: 100%
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial;
    background: var(--bg);
    color: var(--text);
    display: flex;
    justify-content: center;
    padding: 22px;
}

main {
    width: 100%;
    max-width: var(--max-width);
    display: flex;
    flex-direction: column;
    gap: var(--gap)
}

header {
    display: flex;
    justify-content: space-between;
    align-items: baseline
}

h1 {
    margin: 0;
    font-size: 20px
}

.app-grid {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 20px
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--gap)
}

@media(min-width:980px) {
    .sidebar {
        position: sticky;
        top: 22px;
        height: calc(100vh - 44px);
        overflow: auto
    }
}

.canvas-area {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0
}

#runState::before, .recording-indicator::before {
    content: "● ";
}

#runState.running {
    color: #7cb7ff;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--muted);
    border-radius: var(--radius);
    padding: 12px;
}

.panel.primary {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center
}

.panel.secondary {
    display: flex;
    flex-direction: column;
    gap: 10px
}

button {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--muted);
    padding: 8px 12px;
    border-radius: 999px;
    cursor: pointer;
}

label {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    font-size: 13px
}

label.inline {
    display: flex;
    gap: 8px
}

#lifeCanvas {
    width: 100%;
    height: min(72vh, 900px);
    background: var(--canvas-bg);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

footer {
    text-align: center;
    font-size: 12px;
    opacity: .8
}

.recording-indicator {
    margin-left: 8px;
    font-size: 13px;
    color: #ff5f5f;
    animation: pulse 1.2s infinite;
}

.hidden {
    display: none;
}

@keyframes pulse {
    0%   { opacity: 1 }
    50%  { opacity: 0.4 }
    100% { opacity: 1 }
}


@media(max-width:980px) {
    .app-grid {
        grid-template-columns: 1fr
    }

    #lifeCanvas {
        height: 60vh
    }
}

/* ---------- Collapsible panels ---------- */

.collapsible .collapse-toggle {
  background: none;
  border: none;
  color: var(--accent);
  font-weight: 600;
  text-align: left;
  padding: 0;
  cursor: pointer;
}

.collapsible .collapsible-content {
  margin-top: 10px;
}

.collapsible.collapsed .collapsible-content {
  display: none;
}

.collapse-toggle::before {
    content: "↑ ";
}

.collapsible.collapsed .collapse-toggle::before {
    content: "↓ ";
}

/* ---------- Full canvas mode ---------- */

.fullscreen-toggle {
  align-self: flex-end;
  margin-bottom: 8px;
}

body.canvas-only .sidebar,
body.canvas-only header,
body.canvas-only footer {
  display: none;
}

body.canvas-only .canvas-area {
  width: 100%;
}

body.canvas-only #lifeCanvas {
  height: calc(100vh - 80px);
}

body.canvas-only .app-grid {
    display: block;
}

/* Slider alignment */
.slider-row {
  display: grid;
  grid-template-columns: 6em 1fr;
  align-items: center;
  gap: 5px;
}

.slider-control {
  display: grid;
  grid-template-columns: 1fr 3ch;
  align-items: center;
  gap: 8px;
}

/* Prevent output from resizing */
.slider-control output {
  display: inline-block;
  width: 2ch;
  text-align: right;
  font-variant-numeric: tabular-nums;
}