/* Pixel Studio - Retro Pixel Art Editor Styles */

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

:root {
    --bg-dark: #1a1a2e;
    --bg-darker: #16213e;
    --bg-card: #0f3460;
    --accent-primary: #e94560;
    --accent-secondary: #0f9b8e;
    --accent-tertiary: #ff6b6b;
    --text-primary: #ffffff;
    --text-secondary: #a8a8b3;
    --border-color: #2a2a4a;
    --shadow-color: rgba(233, 69, 96, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    text-align: center;
    padding: 20px 0 30px;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 30px;
}

.header h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px var(--shadow-color);
}

.header .tagline {
    color: var(--text-secondary);
    margin-top: 8px;
    font-size: 1rem;
}

/* Main Content Layout */
.main-content {
    display: grid;
    grid-template-columns: 280px 1fr 220px;
    gap: 25px;
    align-items: start;
}

@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .toolbar, .gallery-panel {
        order: 2;
    }
    
    .canvas-area {
        order: 1;
    }
}

/* Toolbar */
.toolbar {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.tool-section {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.tool-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.tool-section h3 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Tool Buttons */
.tool-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.tool-btn {
    width: 100%;
    aspect-ratio: 1;
    border: 2px solid var(--border-color);
    background: var(--bg-darker);
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.3rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-btn:hover {
    border-color: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(15, 155, 142, 0.3);
}

.tool-btn.active {
    border-color: var(--accent-primary);
    background: rgba(233, 69, 96, 0.2);
    box-shadow: 0 0 15px var(--shadow-color);
}

/* Size Buttons */
.size-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.size-btn {
    padding: 10px 8px;
    border: 2px solid var(--border-color);
    background: var(--bg-darker);
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.size-btn:hover {
    border-color: var(--accent-secondary);
}

.size-btn.active {
    border-color: var(--accent-primary);
    background: rgba(233, 69, 96, 0.2);
}

/* Symmetry Buttons */
.symmetry-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.sym-btn {
    padding: 8px 10px;
    border: 2px solid var(--border-color);
    background: var(--bg-darker);
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.75rem;
    transition: all 0.2s ease;
}

.sym-btn:hover {
    border-color: var(--accent-secondary);
}

.sym-btn.active {
    border-color: var(--accent-primary);
    background: rgba(233, 69, 96, 0.2);
}

/* Color Picker */
.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.color-picker-wrapper input[type="color"] {
    width: 50px;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    background: none;
    padding: 2px;
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch {
    border-radius: 4px;
    border: none;
}

.current-color {
    width: 50px;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

.color-palette {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 4px;
}

.color-swatch {
    width: 100%;
    aspect-ratio: 1;
    border: 2px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.color-swatch:hover {
    transform: scale(1.1);
    border-color: white;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

/* Checkboxes */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-primary);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.action-btn {
    padding: 10px 15px;
    border: 2px solid var(--border-color);
    background: var(--bg-darker);
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    text-align: left;
}

.action-btn:hover:not(:disabled) {
    border-color: var(--accent-secondary);
    transform: translateX(5px);
}

.action-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.action-btn.warning {
    border-color: #ff4757;
}

.action-btn.warning:hover {
    background: rgba(255, 71, 87, 0.2);
    border-color: #ff4757;
}

/* Save Buttons */
.save-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.save-btn {
    padding: 12px 15px;
    border: none;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
    color: white;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.save-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow-color);
}

.save-btn.secondary {
    background: var(--bg-darker);
    border: 2px solid var(--accent-secondary);
}

.save-btn.secondary:hover {
    background: rgba(15, 155, 142, 0.2);
    box-shadow: 0 4px 15px rgba(15, 155, 142, 0.3);
}

/* Canvas Area */
.canvas-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.canvas-wrapper {
    position: relative;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    border: 3px solid var(--border-color);
    overflow: hidden;
}

.canvas-wrapper canvas {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
}

#pixelCanvas {
    z-index: 1;
}

#gridCanvas {
    z-index: 2;
    pointer-events: none;
}

#previewCanvas {
    z-index: 3;
    pointer-events: none;
}

.canvas-info {
    display: flex;
    gap: 20px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Gallery Panel */
.gallery-panel {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    max-height: 600px;
    overflow-y: auto;
}

.gallery-panel h3 {
    font-size: 1rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.empty-gallery {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: center;
    padding: 20px;
    grid-column: 1 / -1;
}

.gallery-item {
    position: relative;
    background: var(--bg-darker);
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    transition: all 0.2s ease;
}

.gallery-item:hover {
    border-color: var(--accent-secondary);
    transform: scale(1.05);
}

.gallery-item img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: contain;
    image-rendering: pixelated;
    background: repeating-conic-gradient(#ccc 0% 25%, white 0% 50%) 50% / 10px 10px;
}

.gallery-item-actions {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 5px;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.gallery-item:hover .gallery-item-actions {
    opacity: 1;
}

.download-btn {
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
    padding: 5px 10px;
    border-radius: 4px;
    transition: background 0.2s ease;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 30px;
    max-width: 400px;
    width: 90%;
    position: relative;
    border: 2px solid var(--border-color);
}

.modal-content h2 {
    margin-bottom: 20px;
    color: var(--accent-primary);
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.close-modal:hover {
    color: var(--accent-primary);
}

.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.shortcut {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.shortcut kbd {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px 8px;
    font-family: monospace;
    font-size: 0.85rem;
    min-width: 60px;
    text-align: center;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.8rem;
    }
    
    .tool-buttons {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .shortcuts-grid {
        grid-template-columns: 1fr;
    }
}