@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap');

:root {
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --background-color: #f0f2f5;
    --surface-color: #ffffff;
    --text-color: #333;
    --muted-color: #6c757d;
    --border-color: #dee2e6;
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 25px rgba(0,0,0,0.1);
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    margin: 0;
    background: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.main-container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

#controls-panel {
    width: 500px;
    background: var(--surface-color);
    padding: 1.5em 2em;
    overflow-y: auto;
    border-right: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    z-index: 10;
}

#preview-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2em;
    overflow: hidden;
    position: relative;
}

h1, h2 {
    font-weight: 700;
    color: var(--primary-color);
    margin-top: 0;
}

h1 { font-size: 1.8em; margin-bottom: 1em; }
h2 { font-size: 1.2em; margin-bottom: 1em; border-bottom: 1px solid var(--border-color); padding-bottom: 0.5em;}

.control-group {
    margin-bottom: 1.8em;
}

.control-group label {
    font-weight: 500;
    margin-bottom: 0.75em;
    display: block;
}

.palette-container {
    display: flex;
    flex-direction: column;
    gap: 2em;
}

.palette-section {
    border: none;
    border-radius: 0;
    padding: 0;
    background: transparent;
}

.palette-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1em;
}

.palette-title {
    font-weight: 600;
    font-size: 1em;
}

.select-all-btn {
    padding: 0.3em 0.8em;
    border: 1px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: 15px;
    cursor: pointer;
    font-size: 0.85em;
    transition: all 0.2s;
}

.select-all-btn:hover {
    background: var(--primary-color);
    color: white;
}

.palette-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-height: none;
    overflow-y: visible;
}

.dither-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5em;
}

.dither-selector button {
    padding: 0.5em 1em;
    border: 1px solid var(--border-color);
    background: transparent;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
}

.dither-selector button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.color-swatch {
    width: 22px;
    height: 22px;
    border-radius: 4px;
    border: 2px solid white;
    box-shadow: 0 0 0 1px var(--border-color);
    cursor: pointer;
    position: relative;
    transition: transform 0.2s, opacity 0.2s;
}

.color-swatch:hover {
    transform: scale(1.1);
}

.color-swatch .tooltip-text {
    visibility: hidden;
    width: 140px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 99999;
    bottom: 125%;
    left: 50%;
    margin-left: -70px;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
    white-space: nowrap;
}

.color-swatch:hover .tooltip-text {
    visibility: visible;
    opacity: 0.9;
}

/* 像素悬浮提示框样式 */
.pixel-tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-family: 'Courier New', monospace;
    pointer-events: none;
    z-index: 10000;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transform: translate(-50%, -100%);
    margin-top: -8px;
    opacity: 0;
    transition: opacity 0.15s ease-out;
}

.pixel-tooltip.visible {
    opacity: 1;
}

.pixel-tooltip .color-preview-small {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 3px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    margin-right: 8px;
    vertical-align: middle;
}

.color-swatch.deselected {
    opacity: 0.4;
}

.color-swatch.deselected::after {
    content: '\00D7';
    position: absolute;
    color: white;
    font-weight: bold;
    font-size: 20px;
    line-height: 20px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-shadow: 0 0 2px black, 0 0 2px black;
}

.file-input-wrapper {
    width: 100%;
    height: 120px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

.file-input-wrapper:hover { border-color: var(--primary-color); }
.file-input-wrapper.has-file {
    border-style: solid;
    border-color: var(--primary-color);
}

.file-input-wrapper span {
    background: rgba(255,255,255,0.8);
    padding: 0.2em 0.5em;
    border-radius: 4px;
}

input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.slider-group label, .size-inputs label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5em;
}

.slider-group label span,
.slider-group label input[type="number"] {
    display: inline-flex;
    align-items: center;
}

.slider-group label input[type="number"] {
    margin-left: auto;
}

/* 确保百分号紧跟在输入框后面 */
.slider-group label {
    white-space: nowrap;
}

/* 为标签文本添加最小宽度，确保对齐 */
.slider-group label span {
    min-width: fit-content;
}

/* 实时调整开关区域 */
.realtime-toggle-section {
    transition: all 0.3s ease;
}

.realtime-toggle-section label {
    user-select: none;
}

.realtime-toggle-section input[type="checkbox"] {
    cursor: pointer;
}

#manual-generate-btn {
    transition: all 0.2s ease;
}

#manual-generate-btn:hover {
    background: var(--primary-hover) !important;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#manual-generate-btn:active {
    transform: translateY(0);
}

/* 强制去除半透明像素开关特殊样式 */
.realtime-toggle-section[style*="border-left: 3px solid #28a745"] {
    border-left-color: #28a745 !important;
}

/* 参与人数输入框样式 */
#participant-count {
    transition: border-color 0.2s;
}

#participant-count:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.1);
}

/* 预计时间显示样式 */
#estimated-time {
    transition: color 0.3s;
}

/* 语言选择器优化 */
#language-selector select {
    font-size: 16px;
    cursor: pointer;
    min-width: 120px;
}

#language-selector select option {
    font-size: 15px;
    padding: 4px;
}

@media screen and (max-width: 768px) {
    .realtime-toggle-section {
        padding: 0.6em !important;
    }
    
    .realtime-toggle-section label span {
        font-size: 14px;
    }
    
    #manual-generate-btn {
        min-height: 44px;
        font-size: 15px;
    }

    /* 强制去除半透明像素说明文字 */
    .realtime-toggle-section p {
        font-size: 12px !important;
        line-height: 1.4;
    }

    /* 图像颜色统计头部移动端优化 */
    .control-group > div:first-child {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 0.5em;
    }

    .control-group > div:first-child > div:last-child {
        width: 100%;
        justify-content: space-between;
    }

    #participant-count {
        min-height: 36px;
        font-size: 14px;
    }

    #estimated-time {
        font-size: 13px;
    }
}

input[type="range"] { width: 100%; }

.size-inputs {
    display: flex;
    gap: 1em;
    align-items: center;
    margin-top: 0.5em;
}

.size-inputs div {
    display: flex;
    align-items: center;
    gap: 0.5em;
}

.size-inputs input {
    width: 60px;
    padding: 0.3em;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

/* 总像素输入框需要更宽以显示大数字 */
#pixel-count {
    width: 100px !important;
}

#color-stats-container {
    margin-top: 1em;
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    padding: 1em;
    border-radius: 4px;
    background: #fdfdfd;
}

.color-stat-row {
    display: flex;
    align-items: center;
    margin-bottom: 0.5em;
    font-size: 0.9em;
}

.color-stat-swatch {
    width: 18px;
    height: 18px;
    border-radius: 3px;
    margin-right: 10px;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.color-stat-name {
    flex-grow: 1;
}

.color-stat-count {
    font-weight: 500;
    white-space: nowrap;
}

#preview-canvas-viewport {
    width: 100%;
    height: 100%;
    overflow: hidden;
    cursor: grab;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #f8f4f0; /* 地图色背景 */
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

#preview-canvas {
    display: block;
    transition: transform 0.1s ease-out;
    transform-origin: center;
    image-rendering: -moz-crisp-edges;
    image-rendering: -webkit-crisp-edges;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

#placeholder-text {
    color: var(--muted-color);
    text-align: center;
    font-size: 1.2em;
}

.preview-controls {
    position: absolute;
    bottom: 2em;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255,255,255,0.9);
    padding: 0.5em 1em;
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1em;
    z-index: 20;
}

.preview-actions {
    position: absolute;
    bottom: 6em;
    right: 2em;
    display: none;
    gap: 8px;
    margin-top: 12px;
    z-index: 20;
}

.preview-actions button {
    padding: 1em 1.5em;
    font-size: 1em;
    font-weight: 700;
    color: #fff;
    background-color: var(--primary-color);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
    box-shadow: var(--shadow);
}

.preview-actions button:hover {
    background-color: var(--primary-hover);
}

#download-btn:disabled {
    background-color: #e9ecef;
    color: var(--muted-color);
    cursor: not-allowed;
}

footer {
    position: fixed;
    bottom: 1em;
    right: 1em;
    font-size: 0.75em;
    color: var(--muted-color);
    text-align: right;
    z-index: 100;
}

/* 移动端footer默认隐藏 */
.mobile-footer {
    display: none !important;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

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

/* 颜色选择和替换功能样式 */
.color-replacement-section {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5em;
    background: #fdfdfd;
}

.color-picker-mode {
    margin-bottom: 1em;
}

.mode-description {
    font-size: 0.9em;
    color: var(--muted-color);
    margin: 0.5em 0 0 0;
}

.selected-color-display {
    margin: 1em 0;
    padding: 1em;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.selected-color-info {
    display: flex;
    align-items: center;
    gap: 0.8em;
}

.color-preview {
    width: 30px;
    height: 30px;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    display: inline-block;
}

.replacement-color-section {
    margin: 1em 0;
    padding: 1em;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.replacement-palette-tabs {
    display: flex;
    gap: 0.5em;
    margin-bottom: 1em;
}

.tab-btn {
    padding: 0.5em 1em;
    border: 1px solid var(--border-color);
    background: transparent;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
}

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

.replacement-palette-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 1em;
    max-height: 150px;
    overflow-y: auto;
    padding: 0.5em;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.replacement-palette-grid .color-swatch {
    cursor: pointer;
    position: relative;
}

.replacement-palette-grid .color-swatch.selected {
    border: 3px solid var(--primary-color);
    transform: scale(1.1);
}

.replacement-actions {
    display: flex;
    gap: 0.5em;
    flex-wrap: wrap;
}

.replacement-actions button {
    padding: 0.5em 1em;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.replacement-actions button:hover {
    background: var(--background-color);
}

.replacement-actions button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#apply-replacement-btn {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

#apply-replacement-btn:hover:not(:disabled) {
    background: var(--primary-hover);
}

.replacement-list {
    margin-top: 1em;
}

.replacement-items {
    max-height: 200px;
    overflow-y: auto;
}

.replacement-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8em;
    margin-bottom: 0.5em;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.replacement-mapping {
    display: flex;
    align-items: center;
    gap: 0.8em;
}

.replacement-arrow {
    color: var(--muted-color);
    font-weight: bold;
}

.remove-replacement-btn {
    padding: 0.3em 0.6em;
    border: 1px solid #dc3545;
    background: transparent;
    color: #dc3545;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8em;
}

.remove-replacement-btn:hover {
    background: #dc3545;
    color: white;
}

.no-replacements {
    color: var(--muted-color);
    font-style: italic;
    text-align: center;
    padding: 1em;
}

/* 图像点击模式样式 */
#preview-canvas.color-picker-active {
    cursor: crosshair !important;
}

/* ==================== 移动端响应式设计 ==================== */

/* 移动端分隔条默认隐藏 */
.mobile-resizer {
    display: none;
}

/* 平板和手机通用样式 (768px 以下) */
@media screen and (max-width: 768px) {
    /* 改变布局方向为垂直 */
    .main-container {
        flex-direction: column;
        width: 100vw !important;
        max-width: 100vw !important;
        overflow-x: hidden !important;
    }

    /* 预览区域在上 */
    #preview-panel {
        order: 1;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box;
        flex: 0 0 50vh;
        min-height: 250px;
        padding: 0.8em;
        overflow: hidden;
    }

    /* 移动端可拖动分隔条 - 在画布和功能区间 */
    .mobile-resizer {
        display: block !important;
        order: 2;
        height: 24px;
        background: var(--surface-color);
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
        cursor: row-resize;
        touch-action: none;
        position: relative;
        z-index: 50;
        flex-shrink: 0;
    }

    .resizer-handle {
        width: 40px;
        height: 4px;
        background: var(--muted-color);
        border-radius: 2px;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        opacity: 0.5;
    }

    .mobile-resizer:active {
        background: var(--primary-color);
    }

    .mobile-resizer:active .resizer-handle {
        opacity: 1;
        background: white;
    }

    /* 控制面板在下 */
    #controls-panel {
        order: 3;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box;
        flex: 1;
        border-right: none;
        border-top: none;
        padding: 1em 0.8em;
        box-shadow: 0 -2px 8px rgba(0,0,0,0.1);
        overflow-x: hidden !important;
        overflow-y: auto;
    }

    /* 隐藏桌面端footer */
    .desktop-footer {
        display: none !important;
    }

    /* 显示移动端footer在功能区底部 */
    .mobile-footer {
        display: block !important;
        padding: 0.8em;
        margin: 0 -0.8em -1em -0.8em;
        background: var(--background-color);
        border-top: 1px solid var(--border-color);
        font-size: 11px;
        text-align: center;
        color: var(--muted-color);
    }

    .mobile-footer p {
        margin: 0.3em 0;
    }

    .mobile-footer a {
        color: var(--primary-color);
        text-decoration: none;
    }

    /* 标题缩小 */
    h1 {
        font-size: 1.3em;
        margin-bottom: 0.6em;
    }

    h2 {
        font-size: 0.95em;
        margin-bottom: 0.6em;
    }

    /* 确保所有内容都不超出屏幕 */
    .palette-grid,
    .replacement-palette-grid,
    .dither-selector {
        max-width: 100%;
        overflow-x: hidden;
    }

    /* 预览视口优化 */
    #preview-canvas-viewport {
        border-radius: 4px;
        touch-action: none;
        width: 100% !important;
        max-width: 100% !important;
    }

    /* 画布支持触摸 */
    #preview-canvas {
        touch-action: none;
        max-width: 100% !important;
    }

    /* 颜色样本稍微放大，便于触摸 */
    .color-swatch {
        width: 28px;
        height: 28px;
        border-radius: 5px;
    }

    /* 调色板网格间距增大 */
    .palette-grid {
        gap: 10px;
    }

    /* 按钮优化 - 增大触摸区域 */
    button,
    .select-all-btn,
    .tab-btn,
    .dither-selector button {
        min-height: 44px; /* iOS 推荐的最小触摸区域 */
        padding: 0.6em 1.2em;
        font-size: 14px;
    }

    /* 滑块优化 */
    input[type="range"] {
        height: 30px;
    }

    /* 输入框优化 */
    input[type="number"],
    input[type="file"],
    select {
        min-height: 44px;
        font-size: 16px; /* 防止 iOS 自动缩放 */
    }

    /* 下载按钮容器固定在底部 */
    .preview-actions {
        bottom: 1em !important;
        right: 1em !important;
        left: 1em !important;
        width: auto !important;
        z-index: 100;
    }

    .preview-actions button {
        padding: 0.9em 1.5em;
        font-size: 16px;
        min-height: 44px;
    }

    /* 确保下载按钮在移动端可以显示 */
    .preview-actions[style*="display: flex"],
    .preview-actions:not([style*="display: none"]) {
        display: flex !important;
    }

    /* 预览控制条 */
    .preview-controls {
        bottom: 5em;
        padding: 0.6em 1em;
        font-size: 14px;
    }

    /* 语言选择器位置调整 */
    #language-selector {
        top: 10px;
        right: 10px;
        padding: 6px;
    }

    #language-selector select {
        font-size: 14px;
        padding: 4px;
    }

    /* 文件上传区域 */
    .file-input-wrapper {
        height: 100px;
    }

    /* 颜色统计容器 */
    #color-stats-container {
        max-height: 150px;
    }

    /* 替换列表 */
    .replacement-items {
        max-height: 150px;
    }

    /* 工具提示优化 */
    .pixel-tooltip {
        font-size: 11px;
        padding: 6px 10px;
    }

    /* 防止文本选择干扰触摸操作 */
    #preview-canvas-viewport {
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
}

/* 小屏手机优化 (480px 以下) */
@media screen and (max-width: 480px) {
    #preview-panel {
        flex: 0 0 45vh;
        min-height: 250px;
        padding: 0.5em;
    }

    #controls-panel {
        padding: 0.8em;
    }

    h1 {
        font-size: 1.2em;
    }

    h2 {
        font-size: 0.95em;
    }

    /* 更紧凑的控件 */
    .control-group {
        margin-bottom: 1.2em;
    }

    /* 颜色样本进一步缩小以适应小屏 */
    .color-swatch {
        width: 24px;
        height: 24px;
    }

    .palette-grid {
        gap: 8px;
    }

    /* 尺寸输入框改为垂直排列 */
    .size-inputs {
        flex-direction: column;
        align-items: stretch;
    }

    .size-inputs div {
        justify-content: space-between;
    }

    /* 下载按钮文字简化 */
    #download-btn {
        padding: 0.8em 1em;
        font-size: 15px;
    }
}

/* 横屏模式优化 */
@media screen and (max-width: 768px) and (orientation: landscape) {
    #preview-panel {
        flex: 0 0 60vh;
    }

    #controls-panel {
        max-height: 40vh;
        overflow-y: auto;
    }
}

/* 触摸设备特定优化 */
@media (hover: none) and (pointer: coarse) {
    /* 移除悬停效果，改用激活状态 */
    .color-swatch:hover {
        transform: none;
    }

    .color-swatch:active {
        transform: scale(0.95);
    }

    button:hover {
        transform: none;
    }

    button:active {
        transform: scale(0.98);
        opacity: 0.8;
    }

    /* 增大所有可点击元素的触摸区域 */
    .select-all-btn,
    .tab-btn,
    .dither-selector button,
    .replacement-actions button,
    .remove-replacement-btn {
        min-width: 44px;
        min-height: 44px;
    }
}

/* 触摸设备特定优化 */
@media (hover: none) and (pointer: coarse) {
    /* 移除悬停效果，改用激活状态 */
    .color-swatch:hover {
        transform: none;
    }

    .color-swatch:active {
        transform: scale(0.95);
    }

    button:hover {
        transform: none;
    }

    button:active {
        transform: scale(0.98);
        opacity: 0.8;
    }

    /* 增大所有可点击元素的触摸区域 */
    .select-all-btn,
    .tab-btn,
    .dither-selector button,
    .replacement-actions button,
    .remove-replacement-btn {
        min-width: 44px;
        min-height: 44px;
    }
}

/* ==================== 额外移动端优化 ==================== */

@media screen and (max-width: 768px) {
    /* 导出按钮优化 */
    #export-selection-btn,
    #edit-in-painter-btn {
        width: 100%;
        min-height: 44px;
        padding: 0.7em 1em;
        font-size: 15px;
    }

    /* 锁定颜色复选框增大 */
    #lock-colors-checkbox {
        width: 20px;
        height: 20px;
        margin-right: 8px;
    }

    /* 颜色选择模式描述文字缩小 */
    .mode-description {
        font-size: 12px;
    }

    /* 替换操作按钮全宽 */
    .replacement-actions {
        flex-direction: column;
    }

    .replacement-actions button {
        width: 100%;
    }

    /* 替换项目中的删除按钮增大 */
    .remove-replacement-btn {
        padding: 0.5em 0.8em;
        font-size: 13px;
        min-height: 36px;
    }

    /* 页脚 - 移动端改为相对定位，不占用屏幕空间 */
    footer {
        position: relative !important;
        bottom: auto !important;
        right: auto !important;
        padding: 0.8em 1em;
        text-align: center;
        font-size: 11px;
        background: var(--surface-color);
        border-top: 1px solid var(--border-color);
    }

    /* 语言选择器在移动端简化 */
    #language-selector {
        top: 5px;
        right: 5px;
        padding: 5px;
        box-shadow: 0 1px 4px rgba(0,0,0,0.15);
    }

    #language-selector select {
        font-size: 14px;
        min-width: 100px;
        padding: 4px;
    }

    /* 抖动算法选择器横向滚动 */
    .dither-selector {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 5px;
    }

    .dither-selector button {
        flex-shrink: 0;
        white-space: nowrap;
    }

    /* 调色板全选按钮位置优化 */
    .palette-header {
        flex-wrap: wrap;
        gap: 0.5em;
    }

    .select-all-btn {
        align-self: flex-end;
    }

    /* 预览控制条中的滑块 */
    #zoom-slider {
        flex: 1;
        min-width: 100px;
    }

    .preview-controls {
        width: 90%;
        max-width: 400px;
    }
}

/* 超小屏幕优化 */
@media screen and (max-width: 360px) {
    #controls-panel {
        padding: 0.6em;
    }

    .color-swatch {
        width: 22px;
        height: 22px;
    }

    h1 {
        font-size: 1.1em;
    }

    h2 {
        font-size: 0.9em;
    }
}