/* 基础变量定义 */

:root {

    --bg-color: #f8fafc;

    --text-color: #1e293b;

    --primary-color: #3b82f6;

    --accent-color: #2563eb;

    --nav-bg: rgba(255, 255, 255, 0.92);

    --nav-border: rgba(148, 163, 184, 0.15);

    --search-bg: rgba(255, 255, 255, 0.98);

    --hover-bg: rgba(59, 130, 246, 0.08);

    --sidebar-width: 240px;

    --header-height: 64px;

    --border-radius: 12px;

    --transition-speed: 0.3s;

    /* 流光渐变方案 */

    --gradient-1: linear-gradient(

        120deg,

        #60a5fa 0%,

        #3b82f6 20%,

        #8b5cf6 40%,

        #ec4899 60%,

        #60a5fa 80%

    );

    

    --gradient-2: linear-gradient(

        120deg,

        #22c55e 0%,

        #10b981 20%,

        #14b8a6 40%,

        #0ea5e9 60%,

        #22c55e 80%

    );

    

    --gradient-3: linear-gradient(

        120deg,

        #f59e0b 0%,

        #f97316 20%,

        #ef4444 40%,

        #ec4899 60%,

        #f59e0b 80%

    );

    

    --gradient-4: linear-gradient(

        120deg,

        #6366f1 0%,

        #8b5cf6 20%,

        #d946ef 40%,

        #ec4899 60%,

        #6366f1 80%

    );

    

    --gradient-5: linear-gradient(

        120deg,

        #06b6d4 0%,

        #0ea5e9 20%,

        #3b82f6 40%,

        #6366f1 60%,

        #06b6d4 80%

    );

}



/* 全局重置 */

* {

    margin: 0;

    padding: 0;

    box-sizing: border-box;

}



body {

    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    background-color: var(--bg-color);

    color: var(--text-color);

    line-height: 1.5;

    -webkit-font-smoothing: antialiased;

    -moz-osx-font-smoothing: grayscale;

}



/* 顶部导航栏 */

.top-nav {

    position: fixed;

    top: 0;

    left: 0;

    right: 0;

    height: var(--header-height);

    background: var(--nav-bg);

    backdrop-filter: blur(8px);

    border-bottom: 1px solid var(--nav-border);

    display: flex;

    align-items: center;

    justify-content: space-between;

    padding: 0 24px;

    z-index: 1000;

}



/* 日期时间容器 */

.datetime-container {

    display: flex;

    flex-direction: column;

    gap: 4px;

}



#time {

    font-size: 1.25rem;

    font-weight: 500;

}



#date {

    font-size: 0.875rem;

    color: #64748b;

}



/* 搜索部分 */

.search-section {

    flex: 1;

    max-width: 800px;

    margin: 0 32px;

}



.search-container {

    position: relative;

}



.search-box {

    width: 100%;

    position: relative;

}



.search-input-wrapper {

    display: flex;

    align-items: center;

    background: var(--search-bg);

    border: 2px solid var(--nav-border);

    border-radius: var(--border-radius);

    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);

    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);

}



.search-input-wrapper:focus-within {

    border-color: var(--primary-color);

    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);

    background: white;

}



.search-engine-select {

    position: relative;

    padding: 8px 28px 8px 12px;

    border: none;

    background: transparent;

    color: var(--text-color);

    font-size: 0.875rem;

    cursor: pointer;

    border-right: 1px solid var(--nav-border);

    appearance: none;

    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236B7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");

    background-repeat: no-repeat;

    background-position: right 8px center;

    background-size: 16px;

    transition: all var(--transition-speed);

}



.search-engine-select:hover {

    background-color: rgba(0, 0, 0, 0.02);

}



.search-engine-select:focus {

    outline: none;

    background-color: rgba(59, 130, 246, 0.05);

}



#search-box {

    flex: 1;

    padding: 12px 16px;

    border: none;

    background: transparent;

    font-size: 1rem;

    color: var(--text-color);

    width: 100%;

    transition: all var(--transition-speed);

}



#search-box:focus {

    outline: none;

}



#search-box::placeholder {

    color: #94a3b8;

    transition: color var(--transition-speed);

}



#search-box:focus::placeholder {

    color: #cbd5e1;

}



.search-icon {

    padding: 8px 16px;

    background: transparent;

    border: none;

    color: #94a3b8;

    cursor: pointer;

    transition: all var(--transition-speed);

    display: flex;

    align-items: center;

    justify-content: center;

}



.search-icon:hover {

    color: var(--primary-color);

}



.search-icon i {

    font-size: 1.25rem;

}



/* 导航右侧 */

.nav-right {

    display: flex;

    align-items: center;

    gap: 24px;

}



.motto {

    display: flex;

    gap: 8px;

    color: #64748b;

    font-size: 0.875rem;

}



.add-link {

    padding: 8px 16px;

    background: var(--primary-color);

    color: white;

    text-decoration: none;

    border-radius: var(--border-radius);

    font-size: 0.875rem;

    transition: all var(--transition-speed);

}



.add-link:hover {

    background: var(--accent-color);

    transform: translateY(-1px);

}



/* 主布局 */

.main-layout {

    display: flex;

    margin-top: var(--header-height);

    height: calc(100vh - var(--header-height));

}



/* 侧边栏 */

.sidebar-container {

    width: var(--sidebar-width);

    height: 100%;

    overflow-y: auto;

    padding: 24px 16px;

    background: rgba(255, 255, 255, 0.5);

    backdrop-filter: blur(8px);

    border-right: 1px solid var(--nav-border);

}



.sidebar-content {

    display: flex;

    flex-direction: column;

    gap: 8px;

}



.sidebar-item {

    padding: 12px 16px;

    border-radius: var(--border-radius);

    cursor: pointer;

    transition: all var(--transition-speed);

    font-size: 0.9375rem;

}



.sidebar-item:hover {

    background: var(--hover-bg);

}



.sidebar-item.active {

    background: var(--primary-color);

    color: white;

}



/* 书签容器 */

.bookmarks-container {

    flex: 1;

    overflow-y: auto;

    padding: 24px;

}



.bookmarks-content {

    max-width: 1200px;

    margin: 0 auto;

}



.subcategory {

    margin-bottom: 32px;

}



.subcategory h3 {

    font-size: 1.25rem;

    margin-bottom: 16px;

    color: var(--text-color);

    font-weight: 500;

}



.bookmark-list {

    display: grid;

    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));

    gap: 16px;

}



.bookmark {

    background: white;

    border-radius: var(--border-radius);

    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);

    position: relative;

    overflow: hidden;

    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);

    z-index: 1;

    height: 100%;

    --bookmark-gradient: var(--gradient-1); /* 默认渐变 */

}



.bookmark::after {

    content: '';

    position: absolute;

    inset: 0;

    padding: 2px;

    border-radius: var(--border-radius);

    background: var(--bookmark-gradient); /* 使用动态分配的渐变 */

    background-size: 300% 300%;

    -webkit-mask: 

        linear-gradient(#fff 0 0) content-box, 

        linear-gradient(#fff 0 0);

    -webkit-mask-composite: xor;

    mask-composite: exclude;

    opacity: 0;

    transition: opacity 0.4s ease;

    animation: borderGlow 6s ease-in-out infinite;

}



.bookmark:hover::after {

    opacity: 0.8;

}



.bookmark a {

    position: relative;

    z-index: 2;

    display: flex;

    flex-direction: column;

    height: 100%;

    padding: 16px;

    text-decoration: none;

    color: inherit;

}



.bookmark::before {

    content: '';

    position: absolute;

    inset: 0;

    background: linear-gradient(

        135deg,

        rgba(59, 130, 246, 0.1),

        rgba(37, 99, 235, 0.05)

    );

    opacity: 0;

    transition: opacity var(--transition-speed);

    z-index: 0;

}



.bookmark:hover {

    transform: translateY(-4px);

    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1),

                0 4px 8px rgba(59, 130, 246, 0.1);

}



.bookmark-title {

    font-weight: 600;

    font-size: 1rem;

    margin-bottom: 8px;

    color: var(--text-color);

    transition: color var(--transition-speed);

    overflow: hidden;

    text-overflow: ellipsis;

    white-space: nowrap;

}



.bookmark:hover .bookmark-title {

    color: var(--primary-color);

}



.bookmark-description {

    font-size: 0.875rem;

    color: #64748b;

    transition: color var(--transition-speed);

    line-height: 1.5;

    flex: 1;

}



.bookmark:hover .bookmark-description {

    color: #4b5563;

}



/* 滚动条样式 */

::-webkit-scrollbar {

    width: 8px;

    height: 8px;

}



::-webkit-scrollbar-track {

    background: transparent;

}



::-webkit-scrollbar-thumb {

    background: #cbd5e1;

    border-radius: 4px;

}



::-webkit-scrollbar-thumb:hover {

    background: #94a3b8;

}



/* 响应式设计 */

@media (max-width: 1024px) {

    .motto {

        display: none;

    }



    .search-section {

        margin: 0 16px;

    }

}



@media (max-width: 768px) {

    :root {

        --sidebar-width: 200px;

    }



    .top-nav {

        padding: 0 16px;

    }



    .datetime-container {

        display: none;

    }



    .search-engine-select {

        padding: 8px;

    }



    .bookmark-list {

        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));

    }

}



@media (max-width: 640px) {

    .main-layout {

        flex-direction: column;

    }



    .sidebar-container {

        width: 100%;

        height: auto;

        border-right: none;

        border-bottom: 1px solid var(--nav-border);

        padding: 16px;

    }



    .sidebar-content {

        flex-direction: row;

        flex-wrap: wrap;

        gap: 8px;

    }



    .sidebar-item {

        padding: 8px 12px;

        font-size: 0.875rem;

    }



    .bookmarks-container {

        padding: 16px;

    }



    .bookmark-list {

        grid-template-columns: 1fr;

    }

}



/* 动画效果 */

@keyframes fadeIn {

    from {

        opacity: 0;

        transform: translateY(10px);

    }

    to {

        opacity: 1;

        transform: translateY(0);

    }

}



.bookmark {

    animation: fadeIn 0.3s ease-out;

}



/* 深色模式支持 */

@media (prefers-color-scheme: dark) {

    :root {

        --bg-color: #0f172a;

        --text-color: #e2e8f0;

        --nav-bg: rgba(15, 23, 42, 0.92);

        --nav-border: rgba(148, 163, 184, 0.1);

        --search-bg: rgba(15, 23, 42, 0.98);

        --hover-bg: rgba(59, 130, 246, 0.1);

    }



    .bookmark {

        background: rgba(30, 41, 59, 0.5);

        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);

    }



    .bookmark:hover {

        box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3),

                    0 4px 8px rgba(59, 130, 246, 0.2);

    }



    .bookmark::before {

        background: linear-gradient(

            135deg,

            rgba(59, 130, 246, 0.15),

            rgba(37, 99, 235, 0.1)

        );

    }



    .bookmark:hover .bookmark-description {

        color: #94a3b8;

    }



    .sidebar-container {

        background: rgba(15, 23, 42, 0.5);

    }



    ::-webkit-scrollbar-thumb {

        background: #334155;

    }



    ::-webkit-scrollbar-thumb:hover {

        background: #475569;

    }



    .search-input-wrapper {

        background: rgba(30, 41, 59, 0.8);

        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);

    }



    .search-input-wrapper:focus-within {

        background: rgba(30, 41, 59, 0.95);

        box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);

    }



    .search-engine-select {

        color: #e2e8f0;

        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394A3B8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");

    }



    .search-engine-select:hover {

        background-color: rgba(255, 255, 255, 0.05);

    }



    .search-engine-select:focus {

        background-color: rgba(59, 130, 246, 0.1);

    }



    #search-box::placeholder {

        color: #64748b;

    }



    #search-box:focus::placeholder {

        color: #475569;

    }



    .bookmark::after {

        background: var(--bookmark-gradient);

        opacity: 0;

        padding: 1.5px;

    }



    .bookmark-title {

        color: #e2e8f0;

    }



    .bookmark-description {

        color: #94a3b8;

    }



    .bookmark-meta {

        border-top-color: rgba(148, 163, 184, 0.05);

        color: #64748b;

    }



    .bookmark:hover .bookmark-title {

        color: #60a5fa;

    }



    .bookmark:hover .bookmark-description {

        color: #cbd5e1;

    }

}



/* 添加书签点击效果 */

.bookmark:active {

    transform: translateY(-2px);

    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);

    transition: all 0.1s;

}



/* 搜索引擎选项样式 */

.search-engine-select option {

    padding: 8px;

    background-color: var(--bg-color);

    color: var(--text-color);

}



/* 添加流光动画关键帧 */

@keyframes borderGlow {

    0% {

        background-position: 0% 50%;

    }

    50% {

        background-position: 100% 50%;

    }

    100% {

        background-position: 0% 50%;

    }

}



/* 添加图标和元数据容器 */

.bookmark-meta {

    display: flex;

    align-items: center;

    color: #94a3b8;

    line-height: 1.5;

}



.bookmark-meta i {

    font-size: 0.875rem;

}



/* 包装容器 */

.description-wrapper {

    display: flex;

    align-items: center;

    gap: 4px;

    margin-top: 8px;

}



/* 移除旧的浮动相关样式 */

.bookmark-meta {

    border-top: none;

    padding-top: 0;

    margin: 0;

}



/* 深色模式适配 */

@media (prefers-color-scheme: dark) {

    .bookmark-meta {

        color: #64748b;

    }

    

    .bookmark-description {

        color: #94a3b8;

    }

}



/* 添加 favicon 样式 */

.bookmark-favicon {

    width: 16px;

    height: 16px;

    margin-right: 8px;

    vertical-align: middle;

    border-radius: 3px;

}



.bookmark-title {

    display: flex;

    align-items: center;

    font-size: 1rem;

    font-weight: 500;

    color: var(--text-color);

    margin-bottom: 8px;

    transition: color var(--transition-speed);

}



/* 加载动画 */

@keyframes shimmer {

  0% { background-position: -1000px 0; }

  100% { background-position: 1000px 0; }

}



.skeleton-loading {

  background: linear-gradient(

    to right,

    rgba(255,255,255,0.1) 0%,

    rgba(255,255,255,0.3) 50%,

    rgba(255,255,255,0.1) 100%

  );

  background-size: 1000px 100%;

  animation: shimmer 2s infinite;

}