/* Tessellation Generator Styles */
:root {
    --tess-primary: #6366f1;
    --tess-primary-dark: #4f46e5;
    --tess-secondary: #8b5cf6;
    --tess-accent: #ec4899;
    --tess-bg: #ffffff;
    --tess-surface: #f8fafc;
    --tess-border: #e2e8f0;
    --tess-text: #1e293b;
    --tess-text-muted: #64748b;
    --tess-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --tess-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --tess-radius: 12px;
    --tess-radius-sm: 8px;
}

.tessellation-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (min-width: 1024px) {
    .tessellation-wrapper {
        grid-template-columns: 380px 1fr;
    }
}

.tessellation-controls {
    background: var(--tess-bg);
    border: 1px solid var(--tess-border);
    border-radius: var(--tess-radius);
    padding: 1.5rem;
    box-shadow: var(--tess-shadow);
}

.control-group {
    margin-bottom: 2rem;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--tess-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pattern-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

@media (min-width: 640px) {
    .pattern-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pattern-card {
    aspect-ratio: 1;
    background: var(--tess-surface);
    border: 2px solid var(--tess-border);
    border-radius: var(--tess-radius-sm);
    padding: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.pattern-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--tess-primary), var(--tess-secondary));
    opacity: 0;
    transition: opacity 0.2s ease;
}

.pattern-card:hover {
    border-color: var(--tess-primary);
    transform: translateY(-2px);
    box-shadow: var(--tess-shadow-lg);
}

.pattern-card.active {
    border-color: var(--tess-primary);
    background: linear-gradient(135deg, var(--tess-primary), var(--tess-secondary));
    color: white;
    transform: scale(1.02);
}

.pattern-card.active::before {
    opacity: 0;
}

.pattern-icon {
    width: 32px;
    height: 32px;
    position: relative;
    z-index: 1;
    color: var(--tess-text);
    transition: color 0.2s ease;
}

.pattern-card.active .pattern-icon {
    color: white;
}

.pattern-name {
    font-size: 0.75rem;
    font-weight: 500;
    text-align: center;
    position: relative;
    z-index: 1;
    color: var(--tess-text);
    transition: color 0.2s ease;
}

.pattern-card.active .pattern-name {
    color: white;
}

.slider-control {
    margin-bottom: 1.25rem;
}

.slider-control:last-child {
    margin-bottom: 0;
}

.slider-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.slider-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--tess-text);
}

.slider-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--tess-primary);
    background: var(--tess-surface);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    min-width: 50px;
    text-align: center;
}

.slider-input {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--tess-border);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.slider-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--tess-primary), var(--tess-secondary));
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease;
}

.slider-input::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.slider-input::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--tess-primary), var(--tess-secondary));
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.select-control {
    width: 100%;
    padding: 0.625rem 0.75rem;
    background: var(--tess-bg);
    border: 1px solid var(--tess-border);
    border-radius: var(--tess-radius-sm);
    font-size: 0.875rem;
    color: var(--tess-text);
    cursor: pointer;
    transition: all 0.2s ease;
}

.select-control:hover {
    border-color: var(--tess-primary);
}

.select-control:focus {
    outline: none;
    border-color: var(--tess-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.color-swatch {
    aspect-ratio: 1;
    border-radius: var(--tess-radius-sm);
    border: 3px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.color-swatch:hover {
    transform: scale(1.1);
    border-color: rgba(0, 0, 0, 0.2);
}

.color-swatch.active {
    border-color: var(--tess-primary);
    transform: scale(1.15);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.color-swatch.active::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: bold;
    font-size: 0.875rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.action-buttons-group {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: var(--tess-radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--tess-primary), var(--tess-secondary));
    color: white;
    box-shadow: var(--tess-shadow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--tess-shadow-lg);
}

.btn-secondary {
    background: var(--tess-surface);
    color: var(--tess-text);
    border: 1px solid var(--tess-border);
}

.btn-secondary:hover {
    border-color: var(--tess-primary);
    color: var(--tess-primary);
}

.tessellation-canvas-area {
    background: var(--tess-bg);
    border: 1px solid var(--tess-border);
    border-radius: var(--tess-radius);
    padding: 1.5rem;
    box-shadow: var(--tess-shadow);
    display: flex;
    flex-direction: column;
    min-height: 600px;
}

.canvas-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--tess-border);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.canvas-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--tess-text);
}

.canvas-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.canvas-btn {
    padding: 0.5rem 0.75rem;
    background: var(--tess-surface);
    border: 1px solid var(--tess-border);
    border-radius: var(--tess-radius-sm);
    font-size: 0.875rem;
    color: var(--tess-text);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

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

.canvas-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--tess-surface);
    border-radius: var(--tess-radius-sm);
    position: relative;
    overflow: hidden;
    min-height: 500px;
}

#tessellation-canvas {
    max-width: 100%;
    max-height: 100%;
    border-radius: var(--tess-radius-sm);
    background: white;
    box-shadow: var(--tess-shadow);
    cursor: grab;
}

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

.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 10;
    border-radius: var(--tess-radius-sm);
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--tess-border);
    border-top-color: var(--tess-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.pattern-info {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--tess-surface);
    border-radius: var(--tess-radius-sm);
    border: 1px solid var(--tess-border);
}

.pattern-info-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--tess-text);
    margin-bottom: 0.5rem;
}

.pattern-info-content {
    font-size: 0.875rem;
    color: var(--tess-text-muted);
    line-height: 1.5;
}

.export-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--tess-bg);
    border: 1px solid var(--tess-border);
    border-radius: var(--tess-radius-sm);
    box-shadow: var(--tess-shadow-lg);
    min-width: 150px;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
}

.export-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.export-option {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: var(--tess-text);
    cursor: pointer;
    transition: background-color 0.2s ease;
    border-bottom: 1px solid var(--tess-border);
}

.export-option:first-child {
    border-top-left-radius: var(--tess-radius-sm);
    border-top-right-radius: var(--tess-radius-sm);
}

.export-option:last-child {
    border-bottom: none;
    border-bottom-left-radius: var(--tess-radius-sm);
    border-bottom-right-radius: var(--tess-radius-sm);
}

.export-option:hover {
    background: var(--tess-surface);
}

.export-dropdown {
    position: relative;
}

/* Mobile Optimizations */
@media (max-width: 640px) {
    .tessellation-wrapper {
        gap: 1rem;
    }

    .tessellation-controls,
    .tessellation-canvas-area {
        padding: 1rem;
    }

    .pattern-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .action-buttons-group {
        flex-direction: column;
    }

    .canvas-header {
        flex-direction: column;
        align-items: stretch;
    }

    .canvas-actions {
        width: 100%;
    }

    .canvas-btn {
        flex: 1;
    }

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