/* 像素绘画工具样式 - 亮色主题 */

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

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f0f2f5;
    color: #333;
    overflow: hidden;
    height: 100vh;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* 色板区域 */
.palette-area {
    width: 70px;
    background: #ffffff;
    border-right: 1px solid #dee2e6;
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    overflow-y: auto;
    overflow-x: hidden;
    flex-shrink: 0;
    box-shadow: 2px 0 8px rgba(0,0,0,0.05);
}

/* 隐藏移动端容器 */
.palette-mobile-container {
    display: none;
}

/* 显示桌面端元素 */
.palette-desktop-header,
.desktop-only {
    display: block;
}

.palette-area::-webkit-scrollbar {
    width: 4px;
}

.palette-area::-webkit-scrollbar-track {
    background: transparent;
}

.palette-area::-webkit-scrollbar-thumb {
    background: #dee2e6;
    border-radius: 2px;
}

.palette-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 0;
}

.palette-label {
    font-size: 10px;
    color: #6c757d;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.paid-badge {
    font-size: 12px;
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
    width: 100%;
}

.color-swatch {
    aspect-ratio: 1;
    border-radius: 4px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.15s;
    position: relative;
}

.color-swatch:hover {
    transform: scale(1.15);
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.color-swatch.active {
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0,123,255,0.3);
}

.color-swatch.paid::after {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    background: #fff;
    border-radius: 50%;
    width: 12px;
    height: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    font-size: 8px;
}

.current-color-section {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 0;
    border-top: 1px solid #dee2e6;
    width: 100%;
}

.current-color-preview {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    border: 2px solid #dee2e6;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.current-color-name {
    font-size: 10px;
    color: #6c757d;
    text-align: center;
    font-weight: 500;
}

/* 画布区域 */
.canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #f0f2f5;
    overflow: hidden;
}

/* 工具栏 */
.toolbar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    background: #ffffff;
    border-bottom: 1px solid #dee2e6;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    flex-wrap: nowrap;
    overflow-x: auto;
}

.toolbar::-webkit-scrollbar {
    height: 4px;
}

.toolbar::-webkit-scrollbar-thumb {
    background: #dee2e6;
    border-radius: 2px;
}

.back-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: #f8f9fa;
    color: #333;
    text-decoration: none;
    border-radius: 6px;
    font-size: 13px;
    transition: all 0.2s;
    border: 1px solid #dee2e6;
    white-space: nowrap;
    flex-shrink: 0;
}

.back-btn:hover {
    background: #e9ecef;
    border-color: #007bff;
    color: #007bff;
}

.toolbar-divider {
    width: 1px;
    height: 28px;
    background: #dee2e6;
    margin: 0 4px;
    flex-shrink: 0;
}

.toolbar-spacer {
    flex: 1;
}

.tool-btn {
    width: 36px;
    height: 36px;
    background: #ffffff;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6c757d;
    transition: all 0.15s;
    flex-shrink: 0;
}

.tool-btn:hover {
    background: #f8f9fa;
    border-color: #007bff;
    color: #007bff;
}

.tool-btn.active {
    background: #007bff;
    border-color: #007bff;
    color: #fff;
}

/* 画布容器 */
.canvas-container {
    flex: 1;
    overflow: hidden;
    position: relative;
    background: 
        linear-gradient(45deg, #e9ecef 25%, transparent 25%),
        linear-gradient(-45deg, #e9ecef 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e9ecef 75%),
        linear-gradient(-45deg, transparent 75%, #e9ecef 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}

.canvas-viewport {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    /* 启用硬件加速 */
    will-change: transform;
    transform: translateZ(0);
}

#pixel-canvas {
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    cursor: crosshair;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    background: #fff;
    /* 启用硬件加速，使transform更流畅 */
    will-change: transform;
    transform-origin: 0 0;
}

/* 底部状态栏 */
.status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: #ffffff;
    border-top: 1px solid #dee2e6;
    flex-wrap: wrap;
    gap: 12px;
    box-shadow: 0 -2px 6px rgba(0,0,0,0.05);
}

.canvas-info {
    font-size: 13px;
    color: #6c757d;
    font-weight: 500;
}

.zoom-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

.zoom-btn {
    width: 32px;
    height: 32px;
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    cursor: pointer;
    color: #6c757d;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    font-size: 16px;
    font-weight: 600;
}

.zoom-btn:hover {
    background: #e9ecef;
    border-color: #007bff;
    color: #007bff;
}

.zoom-level {
    min-width: 50px;
    text-align: center;
    font-size: 13px;
    color: #6c757d;
    font-weight: 600;
}

.bg-colors {
    display: flex;
    gap: 6px;
    align-items: center;
}

.bg-color-btn {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.15s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.bg-color-btn:hover {
    transform: scale(1.15);
}

.bg-color-btn.active {
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0,123,255,0.3);
}

.import-section {
    display: flex;
    gap: 6px;
}

.action-btn {
    padding: 8px 14px;
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    color: #6c757d;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.action-btn:hover {
    background: #e9ecef;
    border-color: #007bff;
    color: #007bff;
}

.action-btn.primary {
    background: #007bff;
    border-color: #007bff;
    color: #fff;
}

.action-btn.primary:hover {
    background: #0056b3;
}

.action-btn.danger {
    background: #dc3545;
    border-color: #dc3545;
    color: #fff;
}

.action-btn.danger:hover {
    background: #c82333;
}

/* 移动端响应式 */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .palette-area {
        width: 100%;
        height: auto;
        flex-direction: column;
        padding: 6px;
        border-right: none;
        border-bottom: 1px solid #dee2e6;
        overflow: hidden;
        gap: 0;
        flex-shrink: 0;
    }

    /* 隐藏桌面端元素 */
    .palette-desktop-header,
    .desktop-only {
        display: none !important;
    }

    /* 移动端大容器 - 可横向滚动 */
    .palette-mobile-container {
        display: flex;
        flex-direction: column;
        width: 100%;
        overflow-x: auto;
        overflow-y: hidden;
        gap: 4px;
        padding: 2px 0;
    }

    .palette-mobile-container::-webkit-scrollbar {
        height: 3px;
    }

    /* 移动端小容器 - 不滚动 */
    .palette-mobile-container .color-grid {
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap;
        overflow: visible;
        gap: 3px;
        width: max-content;
        min-width: 100%;
    }

    .color-swatch {
        width: 26px;
        height: 26px;
        flex-shrink: 0;
    }

    .current-color-section {
        display: none;
    }

    .toolbar {
        padding: 4px 6px;
        gap: 3px;
        flex-wrap: nowrap;
    }

    .toolbar::-webkit-scrollbar {
        height: 3px;
    }

    .back-btn span {
        display: none;
    }

    .back-btn {
        padding: 4px 6px;
    }

    .tool-btn {
        width: 32px;
        height: 32px;
        flex-shrink: 0;
    }

    .toolbar-divider {
        height: 22px;
        flex-shrink: 0;
    }

    .toolbar-spacer {
        display: none;
    }

    .canvas-container {
        flex: 1;
        min-height: 0;
        padding: 0;
    }

    .status-bar {
        padding: 6px 8px;
        gap: 8px;
        flex-shrink: 0;
    }

    .canvas-info {
        order: 1;
        flex: 1;
        font-size: 11px;
        text-align: left;
    }

    .zoom-controls {
        order: 2;
    }

    .bg-colors {
        order: 3;
        gap: 4px;
    }

    .bg-color-btn {
        width: 20px;
        height: 20px;
    }

    .import-section {
        order: 4;
    }

    .action-btn {
        padding: 5px 8px;
        font-size: 11px;
    }

    .action-btn svg {
        width: 14px;
        height: 14px;
    }

    .action-btn span {
        display: none;
    }

    #clear-btn, #download-btn {
        padding: 5px 8px;
    }

    #clear-btn span, #download-btn span {
        display: none;
    }
}

/* 触摸优化 */
@media (hover: none) and (pointer: coarse) {
    .color-swatch:hover {
        transform: none;
    }

    .tool-btn:active,
    .zoom-btn:active,
    .action-btn:active {
        transform: scale(0.95);
    }
}

/* 移动端底部版权信息 */
.mobile-footer {
    display: none;
}

@media (max-width: 768px) {
    .mobile-footer {
        display: block;
        background: #ffffff;
        border-top: 1px solid #dee2e6;
        padding: 12px 16px;
        text-align: center;
        font-size: 12px;
        color: #6c757d;
        line-height: 1.6;
        flex-shrink: 0;
    }

    .mobile-footer p {
        margin: 0;
    }

    .mobile-footer a {
        color: #007bff;
        text-decoration: none;
    }

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

    .placeholder-footer {
        background: #f8f9fa;
        border-top: 1px dashed #dee2e6;
    }
}

/* ==================== 确认对话框样式 ==================== */
.confirm-dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.confirm-dialog {
    background: white;
    border-radius: 12px;
    padding: 24px;
    min-width: 320px;
    max-width: 90%;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.confirm-message {
    font-size: 16px;
    color: #333;
    margin-bottom: 20px;
    line-height: 1.6;
    text-align: center;
}

.confirm-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.confirm-btn {
    padding: 10px 24px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 80px;
}

.confirm-btn.cancel {
    background: #f0f2f5;
    color: #666;
}

.confirm-btn.cancel:hover {
    background: #e0e2e5;
}

.confirm-btn.confirm {
    background: #dc3545;
    color: white;
}

.confirm-btn.confirm:hover {
    background: #c82333;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.3);
}