/* Interactive Module Styles */
/* ========================== */

.article-module {
    margin: 2.5rem 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
}

.module-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.module-header svg {
    color: var(--accent);
    flex-shrink: 0;
}

.module-header span {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.module-content {
    padding: 1.5rem;
}

/* Canvas Styles */
.fft-canvas,
.wave-canvas,
.buffer-canvas,
.layer-canvas,
.envelope-canvas,
.simd-canvas {
    width: 100%;
    border-radius: 8px;
    display: block;
    background: #0d0d14;
}

/* ==========================================
   LATENCY CALCULATOR
   ========================================== */

.module-latency-calculator .controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

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

.module-latency-calculator label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.module-latency-calculator select {
    padding: 0.625rem 0.875rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
}

.module-latency-calculator select:focus {
    outline: none;
    border-color: var(--accent);
}

/* Latency Result Grid */
.latency-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.latency-stat {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
}

.latency-stat.highlight {
    background: var(--accent-glow);
    border-color: rgba(74, 158, 255, 0.3);
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
}

.stat-value small {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-muted);
}

.latency-stat.highlight .stat-value {
    color: var(--accent);
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Latency Rating */
.latency-rating {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 600;
}

.latency-rating.excellent {
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
}

.latency-rating.good {
    background: rgba(74, 158, 255, 0.15);
    color: #4a9eff;
}

.latency-rating.moderate {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

.latency-rating.high {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

/* Latency Bar */
.latency-bar-container {
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 1rem;
}

.latency-bar {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s ease, background 0.3s ease;
}

.latency-bar.excellent { background: #22c55e; }
.latency-bar.good { background: #4a9eff; }
.latency-bar.moderate { background: #f59e0b; }
.latency-bar.high { background: #ef4444; }

/* ==========================================
   FFT VISUALIZATION
   ========================================== */

.module-fft-visualization .controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.module-fft-visualization select {
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
}

.visualization-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.visualization-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

/* ==========================================
   BUFFER VISUALIZATION
   ========================================== */

.module-buffer-visualization .module-content {
    padding: 1rem;
}

/* ==========================================
   LAYER BUILDER
   ========================================== */

.module-layer-builder .layer-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.layer-control {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.875rem;
}

.layer-control-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.625rem;
}

.layer-name {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.layer-control[data-layer="transient"] .layer-name { color: #ef4444; }
.layer-control[data-layer="body"] .layer-name { color: #f59e0b; }
.layer-control[data-layer="sub"] .layer-name { color: #4a9eff; }
.layer-control[data-layer="tail"] .layer-name { color: #22c55e; }

.layer-toggle {
    appearance: none;
    width: 32px;
    height: 18px;
    background: var(--bg-tertiary);
    border-radius: 9px;
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
}

.layer-toggle:checked {
    background: var(--accent);
}

.layer-toggle::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform 0.2s;
}

.layer-toggle:checked::after {
    transform: translateX(14px);
}

.layer-volume {
    width: 100%;
    height: 4px;
    appearance: none;
    background: var(--bg-tertiary);
    border-radius: 2px;
    cursor: pointer;
}

.layer-volume::-webkit-slider-thumb {
    appearance: none;
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

/* ==========================================
   ENVELOPE DESIGNER
   ========================================== */

.module-envelope-designer .adsr-controls {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-top: 1rem;
}

.adsr-control {
    text-align: center;
}

.adsr-control label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 0.375rem;
    text-transform: uppercase;
    font-weight: 500;
}

.adsr-value {
    display: block;
    font-size: 0.8rem;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 0.375rem;
}

.adsr-slider {
    width: 100%;
    height: 4px;
    appearance: none;
    background: var(--bg-tertiary);
    border-radius: 2px;
}

.adsr-slider::-webkit-slider-thumb {
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

/* ==========================================
   A/B COMPARISON
   ========================================== */

.comparison-container {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 16/9;
    background: var(--bg-primary);
}

.comparison-before,
.comparison-after {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.comparison-after {
    clip-path: inset(0 50% 0 0);
}

.comparison-slider-container {
    margin-top: 1rem;
}

.comparison-slider {
    width: 100%;
    height: 6px;
    appearance: none;
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.comparison-slider::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

.comparison-value {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* ==========================================
   FITTS LAW DEMO
   ========================================== */

.module-fitts-law .fitts-area {
    position: relative;
    height: 180px;
    background: var(--bg-primary);
    border-radius: 8px;
    overflow: hidden;
    cursor: crosshair;
}

.fitts-target {
    position: absolute;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s;
    box-shadow: 0 0 20px rgba(74, 158, 255, 0.4);
}

.fitts-target:hover {
    transform: scale(1.05);
}

.fitts-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.fitts-controls label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.size-label {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent);
    font-size: 0.85rem;
}

.target-size {
    width: 100px;
}

.fitts-results {
    display: flex;
    gap: 1.5rem;
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.fitts-results strong {
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
}

/* ==========================================
   BUTTERFLY DIAGRAM
   ========================================== */

.module-butterfly-diagram .diagram-container {
    text-align: center;
    padding: 1rem 0;
}

.diagram-caption {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 1rem;
    font-style: italic;
    line-height: 1.5;
}

/* ==========================================
   SIMD COMPARISON
   ========================================== */

.module-simd-comparison .module-content {
    padding: 1rem;
}

/* ==========================================
   PLACEHOLDER MODULE
   ========================================== */

.article-module-placeholder .module-content {
    padding: 2rem;
    text-align: center;
    color: var(--text-muted);
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 768px) {
    .module-content {
        padding: 1rem;
    }

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

    .stat-value {
        font-size: 1.5rem;
    }

    .module-layer-builder .layer-controls {
        grid-template-columns: repeat(2, 1fr);
    }

    .module-envelope-designer .adsr-controls {
        grid-template-columns: repeat(2, 1fr);
    }

    .fitts-results {
        width: 100%;
        margin-left: 0;
        justify-content: space-between;
    }
}

@media (max-width: 480px) {
    .latency-grid {
        gap: 0.5rem;
    }

    .latency-stat {
        padding: 0.75rem;
    }

    .stat-value {
        font-size: 1.25rem;
    }
}