*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background: #0d0d14;
    color: #a0a0c0;
    font-family: 'Segoe UI', system-ui, sans-serif;
    font-size: 13px;
    display: flex;
}

.canvas-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    min-width: 0;
}

canvas {
    display: block;
    background: #000;
    cursor: grab;
}

.sidebar {
    width: 220px;
    flex-shrink: 0;
    background: #111119;
    border-left: 1px solid #1e1e2e;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar-title {
    padding: 14px 16px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: #c8c8e0;
    border-bottom: 1px solid #1e1e2e;
}

.section {
    padding: 14px 16px;
    border-bottom: 1px solid #1e1e2e;
}

.section-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #404060;
    margin-bottom: 12px;
}

.field {
    margin-bottom: 10px;
}

.field:last-child {
    margin-bottom: 0;
}

.field label {
    display: block;
    margin-bottom: 4px;
    color: #606080;
    font-size: 11px;
}

.field input[type="text"] {
    width: 100%;
    background: #0a0a12;
    border: 1px solid #222232;
    color: #b0b0d0;
    padding: 5px 8px;
    border-radius: 3px;
    font-size: 13px;
    font-family: monospace;
    outline: none;
    transition: border-color 0.15s;
}

.field input[type="text"]:focus {
    border-color: #4ecca3;
}

.btn {
    background: #16161f;
    border: 1px solid #2a2a3a;
    color: #9090b0;
    padding: 6px 10px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 12px;
    font-family: inherit;
    transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.btn:hover {
    background: #1e1e2e;
    border-color: #4ecca3;
    color: #4ecca3;
}

.btn-pause {
    width: 100%;
    padding: 8px;
    font-size: 13px;
    margin-top: 6px;
}

.btn-pause:disabled {
    opacity: 0.3;
    cursor: default;
    pointer-events: none;
}

.btn-run {
    width: 100%;
    padding: 8px;
    font-size: 13px;
    color: #4ecca3;
    border-color: #2a5a50;
    background: #0e1f1c;
    margin-top: 12px;
}

.btn-run:hover {
    background: #4ecca3;
    border-color: #4ecca3;
    color: #0d0d14;
}

.zoom-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.zoom-row .btn {
    width: 28px;
    padding: 5px 0;
    text-align: center;
    font-size: 15px;
    flex-shrink: 0;
}

.zoom-value {
    flex: 1;
    text-align: center;
    font-family: monospace;
    font-size: 13px;
    color: #9090b0;
    background: #0a0a12;
    border: 1px solid #222232;
    border-radius: 3px;
    padding: 5px 4px;
    pointer-events: none;
}

.btn-reset {
    width: 100%;
    margin-bottom: 10px;
}

.hint {
    font-size: 11px;
    color: #303050;
    line-height: 1.6;
}

.tabs {
    display: flex;
    border-bottom: 1px solid #1e1e2e;
}

.tab {
    flex: 1;
    padding: 8px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: #606080;
    cursor: pointer;
    font-size: 12px;
    font-family: inherit;
    transition: color 0.12s, border-color 0.12s;
}

.tab.active {
    color: #4ecca3;
    border-bottom-color: #4ecca3;
}

.tab:hover:not(.active) {
    color: #9090b0;
}

.pane-hidden {
    display: none;
}

.btn-nextgen {
    width: 100%;
    padding: 8px;
    font-size: 13px;
    margin-top: 12px;
}

.btn-nextgen:disabled {
    opacity: 0.3;
    cursor: default;
    pointer-events: none;
}

.autoplay-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    color: #606080;
    font-size: 11px;
    cursor: pointer;
}

.autoplay-row input[type="checkbox"] {
    accent-color: #4ecca3;
    cursor: pointer;
}

.gen-display {
    font-family: monospace;
    font-size: 22px;
    color: #4ecca3;
    text-align: center;
    padding: 10px 0 4px;
}

.lifetime-graph {
    display: block;
    width: 100%;
    height: 110px;
    border-radius: 3px;
}