/* 基础变量设置 */

:root {
    /* 亮色主题 */
    --primary-color: #4a90e2;
    --secondary-color: #f5f6fa;
    --text-color: #2c3e50;
    --border-color: #e1e8ed;
    --card-bg: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --hover-color: #edf2f7;
    /* 字体设置 */
    --main-font: "FangSong", "仿宋", FangSong, "STFangsong", "华文仿宋", serif;
    /* 添加过渡变量 */
    --transition-speed: 0.4s;
    --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
    /* 添加过渡属性 */
    transition: color var(--transition-speed) var(--transition-timing), background-color var(--transition-speed) var(--transition-timing), border-color var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing);
}


/* 暗色主题 */

[data-theme="dark"] {
    --primary-color: #60a5fa;
    --secondary-color: #1a1b1e;
    --text-color: #e2e8f0;
    --border-color: #2d3748;
    --card-bg: #2d3748;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --hover-color: #4a5568;
    /* 保持过渡效果 */
    transition: color var(--transition-speed) var(--transition-timing), background-color var(--transition-speed) var(--transition-timing), border-color var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing);
}


/* 全局样式 */

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

body {
    font-family: var(--main-font);
    color: var(--text-color);
    background-color: var(--secondary-color);
    line-height: 1.6;
    min-height: 100vh;
}


/* 头部样式 */

header {
    padding: 1.5rem;
    background-color: var(--card-bg);
    box-shadow: 0 2px 4px var(--shadow-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    font-size: 1.8rem;
    font-weight: normal;
    color: var(--text-color);
}


/* 主要内容区域 */

.tool-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
}


/* 侧边栏样式 */

.sidebar {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px var(--shadow-color);
    /* 优化卡片阴影过渡 */
    transition: transform var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing), background-color var(--transition-speed) var(--transition-timing);
}

.color-picker-section {
    margin-bottom: 2rem;
}

.color-picker-section h2 {
    margin-bottom: 1rem;
    font-weight: normal;
}

#baseColor {
    width: 100%;
    height: 40px;
    border: none;
    border-radius: 8px;
    margin-bottom: 1rem;
    cursor: pointer;
}

#hexValue {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--card-bg);
    color: var(--text-color);
    /* 优化输入框过渡 */
    transition: background-color var(--transition-speed) var(--transition-timing), border-color var(--transition-speed) var(--transition-timing), color var(--transition-speed) var(--transition-timing);
}


/* 教程导航样式 */

.tutorial-nav {
    margin-top: 2rem;
}

.tutorial-nav h3 {
    margin-bottom: 1rem;
    font-weight: normal;
}

.tutorial-links {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.tutorial-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem;
    text-decoration: none;
    color: var(--text-color);
    border-radius: 8px;
    transition: background-color 0.3s;
}

.tutorial-link:hover {
    background-color: var(--hover-color);
}


/* 主要内容区域样式 */

.main-content {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px var(--shadow-color);
    /* 优化卡片阴影过渡 */
    transition: transform var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing), background-color var(--transition-speed) var(--transition-timing);
}


/* 调色板显示区域 */

.palette-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.color-card {
    position: relative;
    height: 120px;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.3s;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.color-card:hover {
    transform: translateY(-2px);
}

.remove-color-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 24px;
    height: 24px;
    border: none;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.color-card:hover .remove-color-btn {
    opacity: 1;
}

.add-color-btn {
    height: 120px;
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    background: none;
    cursor: pointer;
    font-size: 2rem;
    color: var(--text-color);
    transition: background-color 0.3s;
}

.add-color-btn:hover {
    background-color: var(--hover-color);
}


/* 控制按钮区域 */

.controls {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.controls button {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 8px;
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    transition: opacity 0.3s;
}

.controls button:hover {
    opacity: 0.9;
}


/* 下拉菜单样式 */

.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 8px var(--shadow-color);
    z-index: 1000;
    min-width: 160px;
    /* 优化下拉菜单过渡 */
    transition: opacity var(--transition-speed) var(--transition-timing), transform var(--transition-speed) var(--transition-timing);
}

.dropdown-content.show {
    display: block;
    animation: dropdownFade var(--transition-speed) var(--transition-timing);
}

@keyframes dropdownFade {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.scheme-item {
    padding: 0.8rem 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.scheme-item:hover {
    background-color: var(--hover-color);
}


/* Toast提示样式 */

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    animation: fadeInOut 2s ease-in-out;
}

@keyframes fadeInOut {
    0% {
        opacity: 0;
        transform: translate(-50%, 20px);
    }
    10% {
        opacity: 1;
        transform: translate(-50%, 0);
    }
    90% {
        opacity: 1;
        transform: translate(-50%, 0);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -20px);
    }
}


/* 模态框样式 */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    position: relative;
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 16px var(--shadow-color);
    /* 设置   为视窗高度的80% */
    max-height: 80vh;
    /* 添加内部滚动 */
    overflow-y: auto;
    /* 平滑滚动效果 */
    scroll-behavior: smooth;
}

.modal-content h3 {
    margin-bottom: 1rem;
    font-weight: normal;
}

.modal-content input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

.modal-buttons button {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-family: var(--main-font);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s var(--transition-timing);
}


/* 确认按钮样式 */

.modal-buttons button:first-child {
    background-color: var(--primary-color);
    color: #ffffff;
}

.modal-buttons button:first-child:hover {
    background-color: var(--primary-color);
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.2);
}


/* 取消按钮样式 */

.modal-buttons button:last-child {
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.modal-buttons button:last-child:hover {
    background-color: var(--hover-color);
    transform: translateY(-2px);
}


/* 按钮点击效果 */

.modal-buttons button:active {
    transform: translateY(0);
}


/* 禁用状态 */

.modal-buttons button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}


/* 模态框内容样式优化 */

.modal-content input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
    font-family: var(--main-font);
    color: var(--text-color);
    background-color: var(--card-bg);
    transition: border-color 0.3s var(--transition-timing);
}

.modal-content input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.1);
}


/* 响应式设计 */

@media (max-width: 768px) {
    .tool-container {
        grid-template-columns: 1fr;
    }
    .controls {
        flex-direction: column;
    }
    .controls button {
        width: 100%;
    }
}


/* 主题切换按钮样式 */

.theme-btn {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: none;
    border: 2px solid transparent;
    cursor: pointer;
    overflow: hidden;
    /* 优化主题切换按钮样式 */
    transition: background-color var(--transition-speed) var(--transition-timing), border-color var(--transition-speed) var(--transition-timing);
}

.theme-btn:hover {
    background-color: var(--hover-color);
    border-color: var(--border-color);
}

.theme-btn .theme-icon {
    font-size: 1.2rem;
    transform-origin: center;
    /* 主题切换时的图标动画 */
    transition: transform var(--transition-speed) var(--transition-timing), opacity var(--transition-speed) var(--transition-timing);
}


/* 主题切换时的图标动画 */

.theme-btn:active .theme-icon {
    transform: rotate(180deg);
}


/* 页脚样式 */

footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--card-bg);
    margin-top: 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}


/* 已保存配色列表中的按钮样式 */

.palette-actions {
    display: flex;
    gap: 0.8rem;
}

.palette-actions button {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 6px;
    font-family: var(--main-font);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s var(--transition-timing);
}


/* "使用"按钮样式 */

.load-palette {
    background-color: var(--primary-color);
    color: #ffffff;
}

.load-palette:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.2);
}


/* "删除"按钮样式 */

.delete-palette {
    background-color: transparent;
    color: #dc2626;
    border: 1px solid #dc2626;
}

.delete-palette:hover {
    background-color: #dc2626;
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.15);
}


/* 按钮点击效果 */

.palette-actions button:active {
    transform: translateY(0);
}


/* 已保存配色列表中的配色项样式优化 */

.saved-palette {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background-color: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s var(--transition-timing);
}

.saved-palette:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.palette-colors {
    display: flex;
    gap: 0.5rem;
}

.palette-color {
    width: 30px;
    height: 30px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.palette-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.palette-info span {
    font-size: 1rem;
    color: var(--text-color);
}


/* 适配暗色主题 */

[data-theme="dark"] .delete-palette {
    color: #ef4444;
    border-color: #ef4444;
}

[data-theme="dark"] .delete-palette:hover {
    background-color: #ef4444;
    color: #ffffff;
}


/* 模态框关闭按钮样式 */

.close-modal-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background-color: var(--hover-color);
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all 0.3s var(--transition-timing);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.close-modal-btn::before {
    content: "×";
    line-height: 1;
}

.close-modal-btn:hover {
    background-color: var(--border-color);
    transform: rotate(90deg) scale(1.1);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.close-modal-btn:active {
    transform: rotate(90deg) scale(0.95);
    box-shadow: 0 2px 4px var(--shadow-color);
}


/* 暗色主题适配 */

[data-theme="dark"] .close-modal-btn {
    background-color: var(--hover-color);
    color: var(--text-color);
}

[data-theme="dark"] .close-modal-btn:hover {
    background-color: var(--border-color);
}


/* 保存的配色容器样式 */

.saved-palettes-container {
    /* 移除固定高度,让内容自然流动 */
    padding: 1rem 0;
}


/* 自定义滚动条样式 */

.modal-content::-webkit-scrollbar {
    width: 8px;
}

.modal-content::-webkit-scrollbar-track {
    background: var(--secondary-color);
    border-radius: 4px;
}

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

.modal-content::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}


/* 全局过渡效果类 */

.transition-all {
    transition: color var(--transition-speed) var(--transition-timing), background-color var(--transition-speed) var(--transition-timing), border-color var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing), transform var(--transition-speed) var(--transition-timing);
}


/* 移动端适配 */

@media screen and (max-width: 768px) {
    /* 工具容器布局调整 */
    .tool-container {
        grid-template-columns: 1fr;
        /* 改为单列布局 */
        gap: 1rem;
        padding: 0.5rem;
    }
    /* 调整侧边栏样式 */
    .sidebar {
        position: relative;
        width: 100%;
        margin-bottom: 1rem;
    }
    /* 调整颜色卡片大    */
    .palette-display {
        grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
        gap: 0.5rem;
    }
    /* 调整控制按钮布局 */
    .controls {
        flex-direction: column;
        gap: 0.5rem;
    }
    /* 调整模态框样式 */
    .modal-content {
        width: 90%;
        max-width: none;
        margin: 1rem;
        padding: 1rem;
    }
    /* 调整标题大小 */
    .site-title {
        font-size: 1.5rem;
    }
    /* 调整按钮大小 */
    button {
        padding: 0.5rem 1rem;
    }
}


/* 添加触摸设备的交互优化 */

@media (hover: none) {
    .color-card {
        -webkit-tap-highlight-color: transparent;
    }
    .color-card:active {
        transform: scale(0.98);
    }
}


/* Logo 样式 */

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, #FF6B6B, #4ECDC4, #45B7D1);
    position: relative;
}

.logo-text {
    font-family: var(--main-font);
    font-size: 1.8rem;
    font-weight: normal;
    background: linear-gradient(to right, #FF6B6B, #4ECDC4);
    -webkit-background-clip: text;
    color: transparent;
}


/* Logo 印章样式 */

.logo-seal {
    width: 60px;
    height: 60px;
    border: 2px solid #c41e3a;
    color: #c41e3a;
    font-family: "FangSong", serif;
    transform: rotate(-5deg);
    box-shadow: 2px 2px 0 rgba(196, 30, 58, 0.2);
    /* 添加圆形效果 */
    border-radius: 50%;
    /* 文字居中 */
    display: flex;
    align-items: center;
    justify-content: center;
    /* 设置字体大小 */
    font-size: 1.5rem;
    /* 添加过渡效果 */
    transition: transform 0.3s ease;
}


/* 悬停效果 */

.logo-seal:hover {
    transform: rotate(0deg);
}


/* 暗色主题适配 */

[data-theme="dark"] .logo-seal {
    border-color: #ff6b6b;
    color: #ff6b6b;
    box-shadow: 2px 2px 0 rgba(255, 107, 107, 0.2);
}


/* 添加到现有样式末尾 */

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.language-switch {
    display: flex;
    gap: 0.3rem;
}

.lang-btn {
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
    font-size: 0.9rem;
}

.lang-btn[data-active="true"] {
    background: var(--primary-color);
    color: white;
}