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

:root {
    --primary-color: #4CAF50;
    --secondary-color: #2196F3;
    --dark-bg: #ffffff;
    --panel-bg: #f5f5f5;
    --text-color: #333333;
    --border-color: #dddddd;
}

body {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #ffffff;
    color: var(--text-color);
    min-height: 100vh;
    overflow-x: hidden;
}

header {
    text-align: center;
    padding: 1.5rem 1rem;
    background: #f8f8f8;
    border-bottom: 2px solid var(--border-color);
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.3rem;
}

.subtitle {
    font-size: 0.9rem;
    color: #666666;
}

main {
    display: flex;
    gap: 2rem;
    padding: 2rem;
    max-width: 1800px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.canvas-container {
    flex: 1;
    min-width: 300px;
    position: relative;
    background: #fafafa;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    min-height: 600px;
}

#wayfind-canvas {
    display: block;
    width: 100%;
    height: 100%;
    cursor: grab;
}

#wayfind-canvas:active {
    cursor: grabbing;
}

.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.9rem;
    color: #666;
    pointer-events: none;
}

.loading.hidden {
    display: none;
}

.controls-panel {
    width: 320px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.control-section {
    background: var(--panel-bg);
    border-radius: 4px;
    padding: 1rem;
    border: 1px solid var(--border-color);
}

.control-section h3 {
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    color: var(--text-color);
    font-weight: 600;
}

.animation-controls {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    flex: 1;
    min-width: 70px;
    background: white;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background: #45a049;
}

.btn-secondary {
    background: white;
    color: var(--text-color);
}

.btn-secondary:hover {
    background: #f5f5f5;
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.color-controls {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.color-btn {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.color-btn:hover {
    transform: scale(1.05);
    border-color: #999;
}

.color-btn.active {
    border-color: #333;
    border-width: 3px;
}

.color-btn .checkmark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.color-btn.active .checkmark {
    opacity: 1;
}

.specs {
    list-style: none;
    font-size: 0.8rem;
    line-height: 1.6;
}

.specs li {
    padding: 0.3rem 0;
    border-bottom: 1px solid #eee;
}

.specs li:last-child {
    border-bottom: none;
}

.specs strong {
    color: var(--text-color);
    font-weight: 600;
}

.info-section {
    background: #f0f7ff;
    border-color: #cce5ff;
}

.info-section p {
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-size: 0.85rem;
    font-weight: 600;
}

.controls-info {
    list-style: none;
    font-size: 0.8rem;
    line-height: 1.6;
}

.controls-info li {
    padding: 0.2rem 0;
}

@media (max-width: 768px) {
    main {
        flex-direction: column;
        padding: 1rem;
    }

    .controls-panel {
        width: 100%;
    }

    .canvas-container {
        min-height: 400px;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .animation-controls {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

@media (min-width: 1400px) {
    .canvas-container {
        min-height: 800px;
    }
}