/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS变量 - 夜间模式（默认） */
:root {
    --bg-primary: #0a0a1a;
    --bg-secondary: #1a1a2a;
    --bg-grid: #444444;
    --bg-canvas: #2a2a2a;
    --bg-overlay: rgba(0, 0, 0, 0.7);
    
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    
    --color-primary: #2196F3;
    --color-clear: #F44336;
    --color-success: #4CAF50;
    
    --border-color: #444444;
    
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.35);
    
    --border-radius: 10px;
    --border-radius-lg: 14px;
    
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-lg: 18px;
    --font-size-xl: 22px;
    
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

/* 白天模式变量 */
[data-theme="light"] {
    --bg-primary: #87CEEB;
    --bg-secondary: #ffffff;
    --bg-grid: #e8e8e8;
    --bg-canvas: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    --text-primary: #212121;
    --text-secondary: #616161;
    --text-tertiary: #9e9e9e;
    
    --color-primary: #1976D2;
    --color-clear: #D32F2F;
    --color-success: #4CAF50;
    
    --border-color: #e0e0e0;
    
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
    min-height: 100vh;
    position: relative;
}

/* 夜间模式星空背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: -1;
}

[data-theme="dark"] body::before,
:root body::before {
    background: radial-gradient(ellipse at bottom, #1a1a2a 0%, #0a0a1a 100%);
}

/* 白天模式渐变背景 */
[data-theme="light"] body {
    background: linear-gradient(180deg, 
        #87CEEB 0%, 
        #B0E0E6 50%,
        #ADD8E6 100%
    );
    background-attachment: fixed;
}

[data-theme="light"] body::before {
    background: none;
}

/* 星星容器 */
.stars-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

/* 单个星星 */
.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: #ffffff;
    box-shadow: 0 0 4px 1px rgba(255, 255, 255, 0.6);
    animation: twinkle var(--duration) ease-in-out infinite;
    opacity: 0;
}

/* 静态星星 */
.star-static {
    position: absolute;
    width: 2px;
    height: 2px;
    background: #ffffff;
    box-shadow: 0 0 3px 1px rgba(255, 255, 255, 0.4);
    opacity: 0.5;
}

@keyframes twinkle {
    0%, 100% {
        opacity: 0;
        transform: scale(0.5);
    }
    50% {
        opacity: 0.6;
        transform: scale(1);
    }
}

/* 流星 */
.meteor {
    position: absolute;
    width: 2px;
    height: 2px;
    background: #ffffff;
    border-radius: 50%;
    box-shadow: 
        0 0 6px 2px rgba(255, 255, 255, 0.9),
        -15px 0 8px 1px rgba(255, 255, 255, 0.5),
        -30px 0 5px 0 rgba(255, 255, 255, 0.3);
    animation: meteor-fall var(--meteor-duration) linear forwards;
}

@keyframes meteor-fall {
    0% {
        opacity: 0;
        transform: translate(0, 0) rotate(45deg);
    }
    5% {
        opacity: 1;
    }
    95% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translate(250px, 250px) rotate(45deg);
    }
}

/* 白天模式的云朵 */
[data-theme="light"] .stars-container {
    display: none;
}

/* 云朵容器 */
.clouds-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

[data-theme="dark"] .clouds-container {
    display: none;
}

/* 像素云朵 */
.cloud {
    position: absolute;
    opacity: 0.85;
}

.cloud-pixel {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 
        1px 1px 0 0 rgba(200, 200, 200, 0.3),
        inset 1px 1px 0 0 rgba(255, 255, 255, 0.5);
    border-radius: 0;
}

.pixel-art-app {
    max-width: 480px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-sm) 0;
    position: relative;
    min-height: 56px;
}

.app-title {
    font-size: 32px;
    font-weight: var(--font-weight-bold);
    letter-spacing: 2px;
    color: var(--color-primary);
    padding: 0 16px;
}

.canvas-tip {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    font-weight: 500;
    position: relative;
    padding-right: 50px;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 0;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    -webkit-tap-highlight-color: transparent;
    box-shadow:
        inset 1px 1px 0 0 rgba(255, 255, 255, 0.15),
        inset -1px -1px 0 0 rgba(0, 0, 0, 0.1),
        2px 0 0 0 rgba(255, 255, 255, 0.05),
        -2px 0 0 0 rgba(255, 255, 255, 0.05),
        0 2px 0 0 rgba(0, 0, 0, 0.1),
        0 -2px 0 0 rgba(255, 255, 255, 0.05);
}

.theme-toggle:active {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-50%) translate(1px, 1px);
}

.theme-icon {
    position: relative;
    z-index: 1;
}

.canvas-container {
    width: 100%;
    padding-bottom: 100%;
    position: relative;
    margin-bottom: var(--spacing-xl);
    border-radius: 0;
    overflow: hidden;
    box-shadow: none;
    background: #8B4513;
    border: none;
    box-shadow:
        4px 0 0 0 #6B3A0A,
        -4px 0 0 0 #A0522D,
        0 4px 0 0 #6B3A0A,
        0 -4px 0 0 #A0522D,
        8px 0 0 0 #5D3A1A,
        -8px 0 0 0 #8B4513,
        0 8px 0 0 #5D3A1A,
        0 -8px 0 0 #8B4513,
        12px 0 0 0 #3D2A0A,
        -12px 0 0 0 #6B3A0A,
        0 12px 0 0 #3D2A0A,
        0 -12px 0 0 #6B3A0A,
        8px 8px 0 0 #4D3A1A,
        -8px 8px 0 0 #7B4A2A,
        8px -8px 0 0 #7B4A2A,
        -8px -8px 0 0 #9B5A3A,
        12px 12px 0 0 #2D1A0A,
        -12px 12px 0 0 #5D3A1A,
        12px -12px 0 0 #5D3A1A,
        -12px -12px 0 0 #7B4A2A;
}

.canvas-container::before {
    content: '';
    position: absolute;
    inset: 8px;
    background: linear-gradient(135deg, #A0522D, #8B4513, #6B3A0A);
    border-radius: 0;
    z-index: 0;
    box-shadow: inset 4px 4px 0 0 rgba(255,255,255,0.1), inset -4px -4px 0 0 rgba(0,0,0,0.2);
}

.grid-canvas {
    position: absolute;
    top: 50%;
    left: 50%;
    display: grid;
    grid-gap: 1px;
    background-color: var(--bg-grid);
    touch-action: none;
    transform-origin: center center;
    border-radius: 0;
    padding: 2px;
    --cell-size: 24px;
    z-index: 1;
    box-shadow: 4px 4px 0 0 rgba(0,0,0,0.3);
}

.grid-cell {
    background-color: #ffffff;
    cursor: crosshair;
    user-select: none;
    width: var(--cell-size, 24px);
    height: var(--cell-size, 24px);
    border-radius: 2px;
    -webkit-tap-highlight-color: transparent;
}

.action-buttons {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    gap: var(--spacing-md);
}

.action-btn {
    flex: 1;
    padding: 18px 12px;
    border: none;
    border-radius: 0;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    min-height: 80px;
    -webkit-tap-highlight-color: transparent;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.2),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.15),
        4px 0 0 0 rgba(255, 255, 255, 0.1),
        -4px 0 0 0 rgba(255, 255, 255, 0.1),
        0 4px 0 0 rgba(0, 0, 0, 0.1),
        0 -4px 0 0 rgba(255, 255, 255, 0.1),
        4px 4px 0 0 rgba(0, 0, 0, 0.08),
        -4px 4px 0 0 rgba(0, 0, 0, 0.08),
        4px -4px 0 0 rgba(255, 255, 255, 0.08),
        -4px -4px 0 0 rgba(255, 255, 255, 0.08);
}

.action-btn:active {
    background: rgba(255, 255, 255, 0.12);
    transform: translate(2px, 2px);
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.2),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.15),
        2px 0 0 0 rgba(255, 255, 255, 0.1),
        -2px 0 0 0 rgba(255, 255, 255, 0.1),
        0 2px 0 0 rgba(0, 0, 0, 0.1),
        0 -2px 0 0 rgba(255, 255, 255, 0.1),
        2px 2px 0 0 rgba(0, 0, 0, 0.08),
        -2px 2px 0 0 rgba(0, 0, 0, 0.08),
        2px -2px 0 0 rgba(255, 255, 255, 0.08),
        -2px -2px 0 0 rgba(255, 255, 255, 0.08);
}

.btn-icon {
    font-size: 28px;
    line-height: 1;
}

.btn-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
}

.import-btn,
.export-btn,
.clear-btn {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.canvas-size-control {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.15),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.1),
        4px 0 0 0 rgba(255, 255, 255, 0.05),
        -4px 0 0 0 rgba(255, 255, 255, 0.05),
        0 4px 0 0 rgba(0, 0, 0, 0.1),
        0 -4px 0 0 rgba(255, 255, 255, 0.05),
        4px 4px 0 0 rgba(0, 0, 0, 0.08),
        -4px 4px 0 0 rgba(0, 0, 0, 0.08),
        4px -4px 0 0 rgba(255, 255, 255, 0.05),
        -4px -4px 0 0 rgba(255, 255, 255, 0.05);
}

.control-label {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.control-label::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--color-primary);
}

.size-input-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.size-display {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.08);
    box-shadow:
        inset 1px 1px 0 0 rgba(255, 255, 255, 0.1),
        inset -1px -1px 0 0 rgba(0, 0, 0, 0.1);
}

.size-input {
    width: 80px;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.08);
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    outline: none;
    font-variant-numeric: tabular-nums;
    box-shadow:
        inset 2px 2px 0 0 rgba(0, 0, 0, 0.2),
        inset -2px -2px 0 0 rgba(255, 255, 255, 0.1);
}

.size-input:focus {
    background-color: rgba(255, 255, 255, 0.12);
}

.size-slider {
    width: 100%;
    height: 12px;
    border-radius: 0;
    background: rgba(0, 0, 0, 0.2);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    box-shadow:
        inset 2px 2px 0 0 rgba(0, 0, 0, 0.3),
        inset -2px -2px 0 0 rgba(255, 255, 255, 0.05);
}

.size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 0;
    background: var(--color-primary);
    cursor: pointer;
    box-shadow:
        2px 0 0 0 rgba(255, 255, 255, 0.3),
        -2px 0 0 0 rgba(0, 0, 0, 0.2),
        0 2px 0 0 rgba(0, 0, 0, 0.2),
        0 -2px 0 0 rgba(255, 255, 255, 0.3),
        2px 2px 0 0 rgba(0, 0, 0, 0.15),
        -2px 2px 0 0 rgba(0, 0, 0, 0.15),
        2px -2px 0 0 rgba(255, 255, 255, 0.2),
        -2px -2px 0 0 rgba(255, 255, 255, 0.2);
}

.size-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 0;
    background: var(--color-primary);
    cursor: pointer;
    border: none;
    box-shadow:
        2px 0 0 0 rgba(255, 255, 255, 0.3),
        -2px 0 0 0 rgba(0, 0, 0, 0.2),
        0 2px 0 0 rgba(0, 0, 0, 0.2),
        0 -2px 0 0 rgba(255, 255, 255, 0.3);
}

.color-selection {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.15),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.1),
        4px 0 0 0 rgba(255, 255, 255, 0.05),
        -4px 0 0 0 rgba(255, 255, 255, 0.05),
        0 4px 0 0 rgba(0, 0, 0, 0.1),
        0 -4px 0 0 rgba(255, 255, 255, 0.05),
        4px 4px 0 0 rgba(0, 0, 0, 0.08),
        -4px 4px 0 0 rgba(0, 0, 0, 0.08),
        4px -4px 0 0 rgba(255, 255, 255, 0.05),
        -4px -4px 0 0 rgba(255, 255, 255, 0.05);
}

.color-section {
    margin-bottom: var(--spacing-lg);
}

.color-section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.color-subgrid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-sm);
}

.color-grid {
    margin-top: var(--spacing-md);
}

.color-swatch {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 6px;
    cursor: pointer;
    border: 2px solid transparent;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.color-swatch.active {
    border-color: var(--color-primary);
}

/* 响应式设计 */
@media (max-width: 480px) {
    .pixel-art-app {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .app-header {
        min-height: 50px;
    }
    
    .app-title {
        font-size: 26px;
        letter-spacing: 1px;
    }
    
    .theme-toggle {
        width: 42px;
        height: 42px;
        font-size: 20px;
    }
    
    .canvas-tip {
        font-size: var(--font-size-xs);
    }
    
    .action-btn {
        padding: 14px 8px;
        min-height: 70px;
    }
    
    .btn-icon {
        font-size: 24px;
    }
    
    .btn-text {
        font-size: var(--font-size-xs);
    }
    
    .control-label {
        font-size: var(--font-size-base);
    }
    
    .size-display {
        font-size: var(--font-size-lg);
    }
    
    .color-subgrid {
        gap: 5px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .grid-cell {
        min-width: 12px;
        min-height: 12px;
        touch-action: manipulation;
    }
    
    .action-btn {
        padding: 16px 12px;
        min-height: 76px;
    }
    
    .btn-icon {
        font-size: 26px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

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

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

/* 加载状态 */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* 错误提示 */
.error-message {
    color: var(--color-clear);
    text-align: center;
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background-color: rgba(244, 67, 54, 0.1);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-clear);
}

/* 成功提示 */
.success-message {
    color: var(--color-success);
    text-align: center;
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background-color: rgba(76, 175, 80, 0.1);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-success);
}

/* 导出选项弹窗 */
.export-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-overlay);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.export-modal.active {
    display: flex;
}

.export-modal-content {
    background-color: var(--bg-secondary);
    border-radius: 0;
    padding: var(--spacing-lg);
    width: 90%;
    max-width: 340px;
    box-shadow:
        inset 4px 4px 0 0 rgba(255, 255, 255, 0.15),
        inset -4px -4px 0 0 rgba(0, 0, 0, 0.2),
        8px 0 0 0 rgba(255, 255, 255, 0.1),
        -8px 0 0 0 rgba(255, 255, 255, 0.1),
        0 8px 0 0 rgba(0, 0, 0, 0.15),
        0 -8px 0 0 rgba(255, 255, 255, 0.1),
        8px 8px 0 0 rgba(0, 0, 0, 0.1),
        -8px 8px 0 0 rgba(0, 0, 0, 0.1),
        8px -8px 0 0 rgba(255, 255, 255, 0.08),
        -8px -8px 0 0 rgba(255, 255, 255, 0.08);
}

.export-modal-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.2);
}

.export-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.export-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    border-radius: 0;
    cursor: pointer;
    border: none;
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.15),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.15),
        4px 0 0 0 rgba(255, 255, 255, 0.08),
        -4px 0 0 0 rgba(255, 255, 255, 0.08),
        0 4px 0 0 rgba(0, 0, 0, 0.1),
        0 -4px 0 0 rgba(255, 255, 255, 0.08);
}

.export-option:active {
    transform: translate(2px, 2px);
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.15),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.15),
        2px 0 0 0 rgba(255, 255, 255, 0.08),
        -2px 0 0 0 rgba(255, 255, 255, 0.08),
        0 2px 0 0 rgba(0, 0, 0, 0.1),
        0 -2px 0 0 rgba(255, 255, 255, 0.08);
}

.export-option-icon {
    font-size: 28px;
    margin-right: var(--spacing-md);
    color: var(--color-primary);
    width: 40px;
    text-align: center;
}

.export-option-text {
    flex: 1;
}

.export-option-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: 2px;
}

.export-option-desc {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.export-cancel-btn {
    width: 100%;
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    border: none;
    border-radius: 0;
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.15),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.15),
        4px 0 0 0 rgba(255, 255, 255, 0.08),
        -4px 0 0 0 rgba(255, 255, 255, 0.08),
        0 4px 0 0 rgba(0, 0, 0, 0.1),
        0 -4px 0 0 rgba(255, 255, 255, 0.08);
}

.export-cancel-btn:active {
    transform: translate(2px, 2px);
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.15),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.15),
        2px 0 0 0 rgba(255, 255, 255, 0.08),
        -2px 0 0 0 rgba(255, 255, 255, 0.08),
        0 2px 0 0 rgba(0, 0, 0, 0.1),
        0 -2px 0 0 rgba(255, 255, 255, 0.08);
}

/* 禁用文本选择 */
.app-title,
.canvas-tip,
.control-label,
.size-display {
    user-select: none;
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* 拼豆设置弹窗 */
.perler-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-overlay);
    z-index: 1001;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.perler-modal.active {
    display: flex;
}

.perler-modal-content {
    background-color: var(--bg-secondary);
    border-radius: 0;
    padding: var(--spacing-lg);
    width: 100%;
    max-width: 380px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow:
        inset 4px 4px 0 0 rgba(255, 255, 255, 0.15),
        inset -4px -4px 0 0 rgba(0, 0, 0, 0.2),
        8px 0 0 0 rgba(255, 255, 255, 0.1),
        -8px 0 0 0 rgba(255, 255, 255, 0.1),
        0 8px 0 0 rgba(0, 0, 0, 0.15),
        0 -8px 0 0 rgba(255, 255, 255, 0.1),
        8px 8px 0 0 rgba(0, 0, 0, 0.1),
        -8px 8px 0 0 rgba(0, 0, 0, 0.1),
        8px -8px 0 0 rgba(255, 255, 255, 0.08),
        -8px -8px 0 0 rgba(255, 255, 255, 0.08);
}

.perler-modal-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.2);
}

.perler-setting-section {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.1),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.1);
}

.perler-setting-label {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.perler-setting-label::before {
    content: '';
    width: 3px;
    height: 16px;
    background: var(--color-primary);
}

.perler-setting-desc {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-sm);
}

.perler-canvas-preview {
    width: 100%;
    background: #cccccc;
    display: grid;
    grid-gap: 1px;
    margin-bottom: var(--spacing-sm);
    cursor: crosshair;
    box-shadow:
        inset 2px 2px 0 0 rgba(0, 0, 0, 0.1),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.05);
    padding: 1px;
    justify-content: center;
    overflow: hidden;
    max-width: 100%;
}

.perler-canvas-cell {
    cursor: crosshair;
    transition: transform 0.1s;
}

.perler-canvas-cell:hover {
    transform: scale(1.1);
    z-index: 1;
    box-shadow: 0 0 0 2px var(--color-primary);
}

.perler-ignore-color {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.perler-ignore-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.perler-ignore-swatch {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    background: transparent;
    box-shadow:
        inset 0 0 0 2px rgba(255, 255, 255, 0.3),
        2px 2px 0 0 rgba(0, 0, 0, 0.1);
}

.perler-ignore-hex {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-family: monospace;
    min-width: 60px;
}

.perler-clear-ignore {
    padding: 4px 12px;
    font-size: var(--font-size-xs);
    background: rgba(255, 255, 255, 0.08);
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    box-shadow:
        inset 1px 1px 0 0 rgba(255, 255, 255, 0.1),
        inset -1px -1px 0 0 rgba(0, 0, 0, 0.1),
        2px 2px 0 0 rgba(0, 0, 0, 0.1);
}

.perler-clear-ignore:active {
    transform: translate(1px, 1px);
    box-shadow:
        inset 1px 1px 0 0 rgba(255, 255, 255, 0.1),
        inset -1px -1px 0 0 rgba(0, 0, 0, 0.1);
}

.perler-modal-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.perler-cancel-btn,
.perler-confirm-btn {
    flex: 1;
    padding: var(--spacing-md);
    border: none;
    border-radius: 0;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
}

.perler-cancel-btn {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.15),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.15),
        4px 0 0 0 rgba(255, 255, 255, 0.08),
        -4px 0 0 0 rgba(255, 255, 255, 0.08),
        0 4px 0 0 rgba(0, 0, 0, 0.1),
        0 -4px 0 0 rgba(255, 255, 255, 0.08);
}

.perler-cancel-btn:active {
    transform: translate(2px, 2px);
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.15),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.15);
}

.perler-confirm-btn {
    background-color: var(--color-primary);
    color: #ffffff;
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.3),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.2),
        4px 0 0 0 rgba(255, 255, 255, 0.2),
        -4px 0 0 0 rgba(0, 0, 0, 0.1),
        0 4px 0 0 rgba(0, 0, 0, 0.2),
        0 -4px 0 0 rgba(255, 255, 255, 0.2);
}

.perler-confirm-btn:active {
    transform: translate(2px, 2px);
    box-shadow:
        inset 2px 2px 0 0 rgba(255, 255, 255, 0.3),
        inset -2px -2px 0 0 rgba(0, 0, 0, 0.2);
}