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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: #f5f7fa;
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    padding: 2rem;
    background: #fff;
    border-bottom: 1px solid #e0e0e0;
}

header .logo {
    max-width: 280px;
    height: auto;
    margin-bottom: 1rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: #333;
}

header p {
    color: #666;
    font-size: 1.1rem;
}

main {
    display: flex;
    padding: 2rem;
    gap: 2rem;
    max-width: 1600px;
    margin: 0 auto;
}

.controls-panel {
    flex: 0 0 320px;
    background: #fff;
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    height: fit-content;
    position: sticky;
    top: 1rem;
}

.control-group {
    margin-bottom: 1.5rem;
}

.control-group h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: #5a6872;
}

input[type="file"] {
    width: 100%;
    padding: 0.5rem;
    background: #f5f7fa;
    border: 1px solid #ddd;
    border-radius: 6px;
    color: #333;
    margin-bottom: 0.5rem;
}

select {
    width: 100%;
    padding: 0.75rem;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 6px;
    color: #333;
    font-size: 1rem;
    cursor: pointer;
}

select optgroup {
    background: #fff;
    color: #5a6872;
    font-weight: bold;
}

select option {
    background: #fff;
    color: #333;
    padding: 0.5rem;
}

button {
    width: 100%;
    padding: 0.75rem 1rem;
    background: #5a6872;
    border: none;
    border-radius: 6px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 0.5rem;
}

button:hover {
    background: #4a5860;
    box-shadow: 0 2px 8px rgba(90, 104, 114, 0.3);
}

button:active {
    transform: translateY(0);
}

button:disabled {
    background: #a0a8b0;
    cursor: not-allowed;
}

.image-panel {
    flex: 1;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.image-container {
    background: #fff;
    border-radius: 12px;
    padding: 1rem;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    text-align: center;
    flex: 1;
    min-width: 300px;
    max-width: 600px;
}

.image-container h3 {
    margin-bottom: 1rem;
    color: #5a6872;
}

canvas {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    background: #f8f9fa;
    border: 2px solid #e0e0e0;
}

.image-info {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: #666;
}

.param-control {
    margin-bottom: 1rem;
}

.param-control label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: #555;
}

.param-control input[type="range"] {
    width: 100%;
    height: 6px;
    background: #e0e0e0;
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.param-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: #5a6872;
    border-radius: 50%;
    cursor: pointer;
}

.param-control .value-display {
    text-align: right;
    font-size: 0.85rem;
    color: #5a6872;
    margin-top: 0.25rem;
}

footer {
    text-align: center;
    padding: 2rem;
    background: #fff;
    border-top: 1px solid #e0e0e0;
    margin-top: auto;
    color: #666;
}

footer a {
    color: #5a6872;
    text-decoration: none;
    font-weight: 600;
}

footer a:hover {
    text-decoration: underline;
}

/* Benchmark Styles */
.benchmark-controls {
    border-top: 1px solid #e0e0e0;
    padding-top: 1.5rem;
}

.benchmark-results {
    margin-top: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
    font-size: 0.85rem;
}

.benchmark-placeholder {
    color: #999;
    font-style: italic;
    text-align: center;
}

.benchmark-stat {
    display: flex;
    justify-content: space-between;
    padding: 0.35rem 0;
    border-bottom: 1px solid #e8e8e8;
}

.benchmark-stat:last-child {
    border-bottom: none;
}

.benchmark-stat .label {
    color: #555;
}

.benchmark-stat .value {
    color: #2e7d32;
    font-weight: 600;
}

.benchmark-stat .value.highlight {
    color: #1565c0;
    font-size: 1rem;
}

.benchmark-operation {
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #5a6872;
    font-weight: 600;
    color: #5a6872;
}

/* Initialization Metrics Styles */
.init-metrics {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px dashed #ccc;
}

.init-metrics-header {
    font-weight: 600;
    color: #5a6872;
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.init-metrics-note {
    font-size: 0.75rem;
    color: #888;
    font-style: italic;
    margin-bottom: 0.5rem;
}

.init-metrics .benchmark-stat .value {
    color: #ff9800;
}

.init-metrics .benchmark-stat .value.highlight {
    color: #e65100;
    font-size: 1rem;
}

/* Operation Benchmark Section */
.operation-benchmark {
    margin-top: 0.5rem;
}

.benchmark-loading {
    text-align: center;
    color: #666;
    padding: 0.5rem;
}

#runBenchmark {
    background: #2e7d32;
}

#runBenchmark:hover {
    background: #1b5e20;
}

#runBenchmark:disabled {
    background: #a5d6a7;
    cursor: not-allowed;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loading-overlay.hidden {
    display: none;
}

.loading-content {
    text-align: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e0e0e0;
    border-top-color: #5a6872;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

#loadingStatus {
    color: #5a6872;
    font-size: 1.1rem;
}

@media (max-width: 1200px) {
    main {
        flex-direction: column;
    }

    .controls-panel {
        flex: none;
        position: static;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }

    main {
        padding: 1rem;
    }

    .image-panel {
        flex-direction: column;
    }

    .image-container {
        min-width: 100%;
    }
}