:root {
    --bg: #0f172a;
    --canvas-bg: #071020;
    --text: #e6eef8;
    --label: #cfe7ff;
    --button-bg: #0b1220;
    --footer: #9bb8d9;
    --border: rgba(255, 255, 255, 0.06);
}

* {
    box-sizing: border-box;
    font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    display: flex;
    justify-content: center;
    align-items: center;
}

main {
    width: 100%;
    max-width: 1100px;
    padding: 22px;
}

/* ---------- Header ---------- */

header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 12px;
}

h1 {
    margin: 0;
    font-size: 24px;
}

#status {
    display: flex;
    gap: 14px;
    font-size: 13px;
    opacity: 0.85;
}

#runState::before {
    content: "● ";
}

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

/* ---------- Controls ---------- */

.controls {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.panel {
    border-radius: 10px;
    padding: 10px;
    border: 1px solid var(--border);
}

.panel.primary {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    background: rgba(255,255,255,0.02);
}

.panel.secondary {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: rgba(255,255,255,0.015);
    min-width: 260px;
}

/* ---------- Inputs ---------- */

button {
    background: var(--button-bg);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
}

button:hover {
    filter: brightness(1.05);
}

button:disabled {
    opacity: 0.4;
    cursor: default;
}

select,
input[type="range"] {
    background: var(--button-bg);
    color: var(--text);
}

label {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 6px;
    font-size: 14px;
    color: var(--label);
}

label.inline {
    display: flex;
    gap: 6px;
    align-items: center;
}

output {
    font-size: 12px;
    opacity: 0.7;
    align-self: center;
}

#modeHint {
    font-size: 12px;
    opacity: 0.7;
    line-height: 1.3;
}

/* ---------- Canvas ---------- */

#lifeCanvas {
    width: 100%;
    height: 70vh;
    display: block;
    background: var(--canvas-bg);
    border: 1px solid var(--border);
    cursor: crosshair;
}

/* ---------- Footer ---------- */

footer {
    margin-top: 8px;
    text-align: center;
    color: var(--footer);
    font-size: 12px;
}

/* ---------- Recording -------- */
.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 }
}