/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header styles */
header {
    text-align: center;
    margin-bottom: 30px;
    color: white;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Main content layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 30px;
    flex: 1;
    margin-bottom: 30px;
}

/* Panel styles */
.controls-panel,
.visualization-panel {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    backdrop-filter: blur(10px);
}

.controls-panel h2,
.visualization-panel h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}

/* Input group styles */
.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
    font-size: 0.95rem;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.input-group input:invalid {
    border-color: #e74c3c;
}

/* Custom resolution styles */
.custom-resolution {
    display: flex;
    align-items: center;
    gap: 10px;
}

.custom-resolution input {
    flex: 1;
}

.separator {
    font-weight: bold;
    color: #7f8c8d;
    font-size: 1.2rem;
}

/* Error styles */
.input-error {
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 5px;
    display: none;
}

.input-error.show {
    display: block;
}

/* Game Presets Styles */
.game-presets {
    margin-bottom: 20px;
}

.game-presets h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.preset-btn {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    flex: 1;
    min-width: 80px;
}

.preset-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

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

/* Performance Section Styles */
.performance-section {
    background: linear-gradient(135deg, #27ae60, #229954);
    color: white;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.performance-section h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: white;
}

.performance-metrics {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}

.metric-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.15);
    padding: 8px 12px;
    border-radius: 6px;
}

.metric-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.metric-value {
    font-weight: 700;
    font-size: 0.95rem;
}

/* Dynamic FOV Section */
.dynamic-fov-section {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    border: 2px solid #e9ecef;
}

.dynamic-fov-section h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

#baseSpeed {
    width: 100%;
    margin-bottom: 5px;
}

#baseSpeedValue {
    font-weight: 600;
    color: #3498db;
    margin-left: 10px;
}

/* Visualization Modes */
.visualization-modes {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.mode-btn {
    background: #ecf0f1;
    color: #2c3e50;
    border: none;
    padding: 8px 15px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    flex: 1;
    min-width: 100px;
}

.mode-btn:hover {
    background: #bdc3c7;
}

.mode-btn.active {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
}

/* Code Generator Styles */
.code-generator {
    background: #2c3e50;
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.code-generator h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: white;
}

.code-options {
    margin-bottom: 15px;
}

.code-options label {
    display: block;
    margin-bottom: 10px;
    font-size: 0.9rem;
    cursor: pointer;
}

.code-options input[type="checkbox"] {
    margin-right: 8px;
    transform: scale(1.1);
}

.generate-btn, .copy-btn {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-right: 10px;
}

.generate-btn:hover, .copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(243, 156, 18, 0.3);
}

.code-output {
    margin-top: 15px;
}

.code-output h4 {
    margin-bottom: 10px;
    color: #ecf0f1;
}

.code-output pre {
    background: #34495e;
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.4;
    margin-bottom: 10px;
    border: 1px solid #4a5d6a;
}

/* Recommendations styles */
.recommendations {
    background: linear-gradient(135deg, #74b9ff, #0984e3);
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.recommendations h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.recommendation-content p {
    margin-bottom: 10px;
    line-height: 1.5;
}

.recommendation-content strong {
    display: block;
    margin-bottom: 5px;
}

/* Canvas styles */
.canvas-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    border: 2px solid #e9ecef;
}

#fovCanvas {
    border: 1px solid #dee2e6;
    border-radius: 4px;
    background: white;
    max-width: 100%;
    height: auto;
}

/* Visualization info styles */
.visualization-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.info-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.info-label {
    font-weight: 600;
    color: #495057;
}

.info-value {
    font-weight: 700;
    color: #2c3e50;
    font-size: 1.1rem;
}

/* Footer styles */
footer {
    text-align: center;
    color: white;
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    header h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .main-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .controls-panel,
    .visualization-panel {
        padding: 20px;
    }

    .custom-resolution {
        flex-direction: column;
        align-items: stretch;
    }

    .separator {
        text-align: center;
        margin: 5px 0;
    }

    .preset-buttons {
        flex-direction: column;
    }

    .preset-btn {
        min-width: auto;
        width: 100%;
        margin-bottom: 5px;
    }

    .visualization-modes {
        flex-direction: column;
    }

    .mode-btn {
        min-width: auto;
        width: 100%;
        margin-bottom: 5px;
    }

    .performance-metrics {
        grid-template-columns: 1fr;
    }

    .code-generator {
        padding: 15px;
    }

    .code-output pre {
        font-size: 0.75rem;
        padding: 10px;
    }

    #fovCanvas, #comparisonCanvas {
        width: 100%;
        max-width: 400px;
    }

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

    .info-item {
        flex-direction: column;
        gap: 5px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .controls-panel,
    .visualization-panel {
        padding: 15px;
    }

    .canvas-container {
        padding: 15px;
    }
}

/* Animation for smooth transitions */
.input-group input,
.input-group select,
.canvas-container,
.recommendations {
    transition: all 0.3s ease;
}

/* Focus states for accessibility */
button:focus,
input:focus,
select:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .controls-panel,
    .visualization-panel {
        border: 2px solid #000;
    }
    
    .input-group input,
    .input-group select {
        border-color: #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}