/**
 * Color Picker CSS - Professional color selection interface
 * Styles for advanced color picker with gradient support
 */

/* Color Picker Container */
.color-picker {
    position: absolute;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
    min-width: 320px;
    max-width: 400px;
    font-family: var(--font-primary);
}

/* Color Picker Header */
.color-picker-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--background-color);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.color-display {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.color-preview {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-base);
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: var(--theme-transition-fast);
}

.color-preview:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.color-value {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--background-color);
    color: var(--text-color);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    text-align: center;
}

.color-tabs {
    display: flex;
    gap: 0.25rem;
}

.color-tab {
    flex: 1;
    padding: 0.5rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--theme-transition-fast);
}

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

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

/* Color Picker Content */
.color-picker-content {
    padding: 1rem;
}

.color-panel {
    display: none;
}

.color-panel:first-child {
    display: block;
}

/* Color Wheel */
.color-wheel-container {
    margin-bottom: 1rem;
    text-align: center;
}

.color-wheel {
    border-radius: 50%;
    cursor: crosshair;
    margin-bottom: 0.5rem;
    border: 2px solid var(--border-color);
}

.color-slider {
    margin-top: 0.5rem;
}

.hue-slider {
    width: 100%;
    height: 8px;
    border-radius: var(--radius-full);
    background: linear-gradient(to right, 
        #ff0000 0%, 
        #ffff00 17%, 
        #00ff00 33%, 
        #00ffff 50%, 
        #0000ff 67%, 
        #ff00ff 83%, 
        #ff0000 100%
    );
    outline: none;
    cursor: pointer;
}

.hue-slider::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--border-color);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.hue-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--border-color);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

/* Color Inputs */
.color-inputs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.color-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.color-input-group label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hex-input {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--background-color);
    color: var(--text-color);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    text-align: center;
    text-transform: uppercase;
}

.rgb-inputs,
.hsl-inputs {
    display: flex;
    gap: 0.5rem;
}

.rgb-input,
.hsl-input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--background-color);
    color: var(--text-color);
    font-size: var(--font-size-sm);
    text-align: center;
}

.alpha-inputs {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alpha-slider {
    flex: 1;
    height: 8px;
    border-radius: var(--radius-full);
    background: linear-gradient(to right, 
        rgba(255, 255, 255, 0) 0%, 
        rgba(255, 255, 255, 1) 100%
    );
    outline: none;
    cursor: pointer;
}

.alpha-slider::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--border-color);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.alpha-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--border-color);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.alpha-input {
    width: 60px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--background-color);
    color: var(--text-color);
    font-size: var(--font-size-sm);
    text-align: center;
}

/* Gradient Panel */
.gradient-preview {
    height: 60px;
    border-radius: var(--radius-base);
    border: 2px solid var(--border-color);
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #4f46e5 0%, #7c3aed 100%);
}

.gradient-type,
.gradient-angle {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.gradient-type label,
.gradient-angle label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.gradient-type-select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--background-color);
    color: var(--text-color);
    font-size: var(--font-size-sm);
}

.angle-inputs {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.angle-slider {
    flex: 1;
    height: 6px;
    border-radius: var(--radius-full);
    background: linear-gradient(to right, 
        var(--primary-color) 0%, 
        var(--primary-light) 100%
    );
    outline: none;
    cursor: pointer;
}

.angle-slider::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--primary-color);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.angle-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--primary-color);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.angle-input {
    width: 60px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--background-color);
    color: var(--text-color);
    font-size: var(--font-size-sm);
    text-align: center;
}

.gradient-stops {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.gradient-stops label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.gradient-stops-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.gradient-stop {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
}

.stop-color {
    width: 40px;
    height: 30px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    cursor: pointer;
    background: none;
}

.stop-position {
    flex: 1;
    padding: 0.25rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--surface-color);
    color: var(--text-color);
    font-size: var(--font-size-xs);
    text-align: center;
}

.remove-stop {
    width: 24px;
    height: 24px;
    padding: 0;
    background: var(--error-color);
    color: white;
    border: none;
    border-radius: var(--radius-base);
    font-size: var(--font-size-sm);
    font-weight: bold;
    cursor: pointer;
    transition: var(--theme-transition-fast);
}

.remove-stop:hover {
    background: #dc2626;
    transform: scale(1.1);
}

/* Preset Colors */
.preset-colors {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

.preset-colors label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.preset-colors-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 0.25rem;
}

.preset-color-swatch {
    width: 30px;
    height: 30px;
    border-radius: var(--radius-base);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--theme-transition-fast);
}

.preset-color-swatch:hover {
    transform: scale(1.1);
    border-color: var(--primary-color);
    z-index: 1;
}

/* Color Picker Actions */
.color-picker-actions {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    background: var(--background-color);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.color-picker-actions .btn {
    flex: 1;
}

/* Focus States */
.color-value:focus,
.hex-input:focus,
.rgb-input:focus,
.hsl-input:focus,
.alpha-input:focus,
.gradient-type-select:focus,
.angle-input:focus,
.stop-position:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Hover States */
.color-preview:hover,
.preset-color-swatch:hover {
    box-shadow: var(--shadow-md);
}

/* Active States */
.color-preview:active,
.preset-color-swatch:active {
    transform: scale(0.95);
}

/* Disabled States */
.color-picker.disabled {
    opacity: 0.6;
    pointer-events: none;
}

/* Loading States */
.color-picker.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Error States */
.color-picker.error .color-value,
.color-picker.error .hex-input,
.color-picker.error .rgb-input,
.color-picker.error .hsl-input {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Success States */
.color-picker.success .color-value,
.color-picker.success .hex-input,
.color-picker.success .rgb-input,
.color-picker.success .hsl-input {
    border-color: var(--success-color);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Responsive Design */
@media (max-width: 480px) {
    .color-picker {
        min-width: 280px;
        max-width: 320px;
    }
    
    .color-picker-header {
        padding: 0.75rem;
    }
    
    .color-picker-content {
        padding: 0.75rem;
    }
    
    .preset-colors-grid {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .preset-color-swatch {
        width: 25px;
        height: 25px;
    }
    
    .color-wheel {
        width: 160px;
        height: 160px;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .color-picker {
        border: 2px solid var(--text-color);
    }
    
    .color-preview,
    .preset-color-swatch,
    .stop-color {
        border: 2px solid var(--text-color);
    }
    
    .color-value,
    .hex-input,
    .rgb-input,
    .hsl-input,
    .gradient-type-select {
        border: 2px solid var(--text-color);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .color-preview,
    .preset-color-swatch,
    .remove-stop,
    .color-preview:hover,
    .preset-color-swatch:hover {
        transition: none;
    }
    
    .color-picker.loading::after {
        animation: none;
    }
}

/* Dark Mode Adjustments */
body.dark-mode .color-picker {
    background: var(--surface-color);
    border-color: var(--border-color);
}

body.dark-mode .color-wheel {
    border-color: var(--border-color);
}

body.dark-mode .color-value,
body.dark-mode .hex-input,
body.dark-mode .rgb-input,
body.dark-mode .hsl-input,
body.dark-mode .gradient-type-select {
    background: var(--background-color);
    color: var(--text-color);
    border-color: var(--border-color);
}

/* Scrollbar Styling */
.color-stops-list::-webkit-scrollbar {
    width: 6px;
}

.color-stops-list::-webkit-scrollbar-track {
    background: var(--background-color);
}

.color-stops-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

.color-stops-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}