/* Shared layout for all simulation pages */

.sim-page {
    overflow-x: hidden;
}

.sim-layout {
    display: flex;
    height: 100vh;
    max-height: 100vh;
}

/* ---- Panel ---- */

.sim-panel {
    width: 300px;
    flex-shrink: 0;
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

.back-link {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: color 0.15s;
}

.back-link:hover {
    color: var(--text);
}

.panel-header {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.panel-tag {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent, var(--text-muted));
}

.panel-title {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-heading);
    letter-spacing: -0.02em;
}

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

.controls {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-group label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.control-group label .val {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    font-variant-numeric: tabular-nums;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent, var(--text));
    cursor: pointer;
    transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.25);
}

input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border: none;
    border-radius: 50%;
    background: var(--accent, var(--text));
    cursor: pointer;
}

/* ---- Buttons ---- */

.btn-group {
    display: flex;
    gap: 0.6rem;
}

.btn-group button {
    flex: 1;
    padding: 0.55rem 0;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface-2);
    color: var(--text);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.btn-primary {
    background: var(--accent, #333) !important;
    border-color: var(--accent, #333) !important;
    color: #fff !important;
}

.btn-group button:hover {
    background: var(--border-hover);
    border-color: var(--border-hover);
}

/* ---- Status ---- */

.sim-status {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    padding: 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.78rem;
}

.status-label {
    color: var(--text-muted);
}

.status-value {
    color: var(--text);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* ---- Viewport ---- */

.sim-viewport {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: #06080f;
}

#sim-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.canvas-hint {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    font-size: 0.7rem;
    color: rgba(255,255,255,0.25);
    pointer-events: none;
}

/* ---- Info section ---- */

.sim-info {
    padding: 3.5rem 0;
    border-top: 1px solid var(--border);
}

.sim-info h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.info-card {
    padding: 1.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.info-card h3 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent, var(--text));
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.6rem;
}

.info-card p {
    font-size: 0.83rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ---- Responsive ---- */

@media (max-width: 860px) {
    .sim-layout {
        flex-direction: column;
        height: auto;
        max-height: none;
    }

    .sim-panel {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .sim-viewport {
        height: 60vw;
        min-height: 300px;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }
}