/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #e0e7ff;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    
    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #0f172a;
    
    /* Text */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    
    /* Borders */
    --border-color: #e2e8f0;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: var(--spacing-lg);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

/* Header */
.header {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--primary-color);
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.tagline {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-top: var(--spacing-xs);
}

/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Panels */
.config-panel,
.generator-panel,
.results-panel {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.config-panel h2,
.generator-panel h2,
.results-panel h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.input-field,
.textarea-field {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg-primary);
}

.input-field:focus,
.textarea-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.textarea-field {
    resize: vertical;
    min-height: 120px;
}

.help-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.char-counter {
    text-align: right;
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

/* Example Chips */
.examples-section {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
}

.examples-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.example-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.example-chip {
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.example-chip:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Buttons */
.generate-btn,
.action-btn,
.retry-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.generate-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.generate-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-icon {
    width: 20px;
    height: 20px;
}

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

.action-btn.secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.retry-btn {
    background: var(--error-color);
    color: white;
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: var(--spacing-xl);
}

.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-md);
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    color: var(--text-secondary);
}

.loading-text strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

/* Error State */
.error-state {
    text-align: center;
    padding: var(--spacing-xl);
    background: #fef2f2;
    border: 2px solid var(--error-color);
    border-radius: var(--border-radius-sm);
}

.error-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.error-message {
    color: var(--error-color);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

/* Results Panel */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.close-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-secondary);
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.close-btn:hover {
    background: var(--error-color);
    color: white;
}

/* Scene Details */
.scene-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.detail-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--border-color);
}

.detail-icon {
    font-size: 2rem;
}

.detail-content {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.detail-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: capitalize;
}

/* Prompt Display */
.prompt-display {
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-lg);
}

.prompt-display strong {
    color: var(--text-secondary);
    font-size: 0.875rem;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.prompt-display p {
    color: var(--text-primary);
}

/* Result Actions */
.result-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.result-actions .action-btn {
    flex: 1;
    min-width: 150px;
}

/* XML Preview */
.xml-preview {
    margin-top: var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

.xml-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
}

.xml-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.close-preview-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: var(--bg-primary);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.close-preview-btn:hover {
    background: var(--error-color);
    color: white;
}

.xml-content {
    padding: var(--spacing-md);
    background: #1e293b;
    color: #e2e8f0;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    overflow-x: auto;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* Import Instructions */
.import-instructions {
    padding: var(--spacing-md);
    background: var(--primary-light);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--primary-color);
}

.import-instructions h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.import-instructions ol {
    padding-left: var(--spacing-lg);
}

.import-instructions li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.import-instructions code {
    padding: 0.2rem 0.4rem;
    background: white;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

/* Footer */
.footer {
    margin-top: var(--spacing-xl);
    text-align: center;
    color: white;
    font-size: 0.875rem;
}

.footer p {
    margin-bottom: var(--spacing-xs);
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer a {
    color: white;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.footer a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background: var(--bg-dark);
    color: white;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-xl);
    transform: translateY(200%);
    transition: transform 0.3s ease;
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
    
    .logo-icon {
        width: 30px;
        height: 30px;
    }
    
    .scene-details {
        grid-template-columns: 1fr;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .result-actions .action-btn {
        width: 100%;
    }
    
    .example-chips {
        flex-direction: column;
    }
    
    .example-chip {
        width: 100%;
    }
    
    .toast {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-panel {
    animation: fadeIn 0.5s ease;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}