/* 全局样式 - 轻量精致风格 */
:root {
    /* 颜色变量 */
    --primary-color: #0071e3; /* 主色调蓝 */
    --secondary-color: #8e8e93; /* 次要灰色 */
    --success-color: #34c759; /* 成功绿色 */
    --danger-color: #ff3b30; /* 危险红色 */
    --light-color: #f5f5f7; /* 浅灰背景 */
    --dark-color: #333333; /* 深色文字，更柔和 */
    --border-color: #e5e5e7; /* 更浅的边框色 */
    --shadow-color: rgba(0, 0, 0, 0.04);
    --card-bg: #ffffff;
    --hover-bg: #f9f9fb;
    --btn-bg: #333333; /* 按钮背景色，更柔和的深灰 */
    --btn-hover: #555555; /* 按钮悬停色 */
    --tag-bg: rgba(0, 0, 0, 0.03); /* 标签背景 */
    --selection-bg: rgba(0, 113, 227, 0.08); /* 选中背景 */

    /* 动画变量 - 极致性能优化 */
    --micro-transition: 0.06s ease-out;
    --fast-transition: 0.08s ease-out;
    --normal-transition: 0.1s cubic-bezier(0.215, 0.61, 0.355, 1);
    --color-transition: 0.08s ease;
    --shadow-transition: 0.08s ease;

    /* 布局变量 */
    --sidebar-width: 200px;
    --header-height: 60px;
    --footer-height: 30px;

    /* 性能优化变量 */
    --gpu-acceleration: translateZ(0);
    --content-visibility: layout style;
    --backface: hidden;
    --will-change-minimal: auto;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Icons", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
    color: var(--dark-color);
    background-color: #f7f8fa; /* 更柔和的背景色 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em; /* 轻微调整字间距，更现代 */
    text-rendering: optimizeSpeed;
    overflow-anchor: none; /* 防止滚动锚定导致的卡顿 */
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 10px;
    will-change: auto;
    transform: var(--gpu-acceleration);
    contain: layout;
}

/* 头部样式 */
header {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 1rem;
    background-color: #ffffff;
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    transform: translateZ(0);
    will-change: auto;
    transition: none;
}

.logo h1 {
    font-size: 1.2rem;
    color: var(--dark-color);
    font-weight: 600;
    letter-spacing: -0.02em;
    white-space: nowrap;
    transform: translateZ(0);
}

.search-container {
    display: flex;
    flex: 1;
    max-width: 400px;
    margin: 0 1rem;
    position: relative;
    transform: translateZ(0);
}

#search-input {
    flex: 1;
    padding: 0.6rem 1rem;
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: 8px 0 0 8px;
    font-size: 0.9rem;
    background-color: var(--light-color);
    transition: var(--transition);
    color: var(--dark-color);
    height: 40px;
}

#search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: #ffffff;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

#search-btn {
    padding: 0 1rem;
    background-color: var(--btn-bg);
    color: white;
    border: none;
    border-radius: 0 8px 8px 0;
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#search-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0.1) 30%,
        rgba(255, 255, 255, 0) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(30deg);
    z-index: 0;
    transition: transform 0.4s;
}

#search-btn:hover {
    background-color: var(--btn-hover);
    transform: translateY(-1px);
}

#search-btn:hover::before {
    transform: rotate(30deg) translate(10%, 10%);
}

#search-btn i {
    position: relative;
    z-index: 1;
}

.actions {
    display: flex;
    gap: 0.75rem;
}

/* 按钮样式 - 现代轻量风格 */
.btn {
    padding: 0.5rem 1.25rem;
    border: none;
    border-radius: 8px; /* 更圆润的按钮 */
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition);
    text-align: center;
    letter-spacing: 0.01em;
    background-color: var(--btn-bg); /* 使用变量 */
    color: #ffffff; /* 白色文字 */
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
    z-index: 1;
    height: 40px; /* 统一高度 */
}

/* 反光效果 - 更微妙 */
.btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0.1) 30%,
        rgba(255, 255, 255, 0) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(30deg);
    z-index: -1;
    transition: transform 0.4s;
}

.btn:hover {
    background-color: var(--btn-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.btn:hover::before {
    transform: rotate(30deg) translate(10%, 10%);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.btn i {
    font-size: 0.9rem;
}

.primary {
    background-color: var(--primary-color);
    color: white;
}

.primary:hover {
    background-color: #0062c4; /* 稍深的蓝色 */
}

.secondary {
    background-color: var(--btn-bg);
    color: white;
}

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

.success {
    background-color: var(--success-color);
    color: white;
}

.success:hover {
    background-color: #2db14f; /* 稍深的绿色 */
}

.danger {
    background-color: var(--danger-color);
    color: white;
}

.danger:hover {
    background-color: #e6352b; /* 稍深的红色 */
}

.cancel {
    background-color: var(--secondary-color);
    color: white;
    border: none;
}

.cancel:hover {
    background-color: #767679; /* 稍深的灰色 */
}

/* 主内容区域 */
main {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
    transform: translateZ(0);
    will-change: auto;
}

/* 侧边栏 - 极简风格 - 修复抖动 */
.sidebar {
    width: var(--sidebar-width);
    background-color: #ffffff;
    border-radius: 0;
    padding: 0.5rem;
    box-shadow: none;
    flex-shrink: 0;
    height: calc(100vh - var(--header-height) - var(--footer-height));
    position: sticky;
    top: var(--header-height);
    overflow-y: auto;
    scrollbar-width: thin;
    transition: none;
    border-right: 1px solid rgba(0, 0, 0, 0.05);
    contain: strict;
    will-change: auto;
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-font-smoothing: subpixel-antialiased;
    overscroll-behavior: contain;
    margin-right: 0;
}

.sidebar-section {
    margin-bottom: 1.5rem;
    transform: translateZ(0);
    contain: content;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    transform: translateZ(0);
    will-change: auto;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 1.5rem;
    height: 2px;
    background-color: var(--primary-color);
    opacity: 0.5;
}

.sidebar-section h2 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: #666;
    margin: 0;
    font-weight: 600;
    opacity: 0.9;
    transform: translateZ(0);
    white-space: nowrap;
}

.sidebar-section:not(:has(.section-header)) h2 {
    margin-bottom: 0.5rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

.sidebar-section:not(:has(.section-header)) h2::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 1.5rem;
    height: 2px;
    background-color: var(--primary-color);
    opacity: 0.5;
}

.filter-list {
    list-style: none;
    max-height: 180px;
    overflow-y: auto;
    scrollbar-width: thin;
    padding-left: 0;
    margin-top: 0.25rem;
    margin-bottom: 0;
    transform: translateZ(0);
    contain: content;
    will-change: auto;
    -webkit-overflow-scrolling: touch;
}

.filter-list li {
    padding: 0.3rem 0.5rem;
    margin-bottom: 0.2rem;
    border-radius: 4px;
    cursor: pointer;
    transition: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: #333;
    position: relative;
    overflow: hidden;
    border: none;
    will-change: auto;
    transform: translateZ(0);
    contain: layout style;
    -webkit-tap-highlight-color: transparent;
    height: 24px;
    line-height: 1;
}

.filter-list li .count {
    font-size: 0.7rem;
    color: #666;
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: 10px;
    padding: 0.1rem 0.4rem;
    min-width: 1.4rem;
    text-align: center;
    font-weight: 500;
    transition: none;
    will-change: auto;
    transform: translateZ(0);
}

.filter-list li:hover {
    background-color: rgba(0, 0, 0, 0.03);
}

.filter-list li.active {
    background-color: rgba(0, 113, 227, 0.08);
    color: var(--primary-color);
    font-weight: 500;
    position: relative;
}

.filter-list li.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background-color: var(--primary-color);
    opacity: 0.8;
}

.filter-list li.active .count {
    background-color: rgba(0, 113, 227, 0.1);
    color: var(--primary-color);
}

/* 滚动条样式 - 极简版 */
.filter-list::-webkit-scrollbar,
.sidebar::-webkit-scrollbar,
.notes-list::-webkit-scrollbar {
    width: 4px;
}

.filter-list::-webkit-scrollbar-track,
.sidebar::-webkit-scrollbar-track,
.notes-list::-webkit-scrollbar-track {
    background: transparent;
}

.filter-list::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb,
.notes-list::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
}

/* 优化滚动性能 */
.filter-list, .sidebar, .notes-list {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: auto;
    overscroll-behavior: contain;
}

/* WebDAV 样式 */
.webdav-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.webdav-actions .btn {
    flex: 1;
    font-size: 0.7rem;
    padding: 0.3rem 0.5rem;
    height: auto;
    min-height: 30px;
}

.webdav-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.webdav-actions .btn {
    flex: 1;
    font-size: 0.7rem;
    padding: 0.3rem 0.5rem;
    height: auto;
    min-height: 30px;
}

#webdav-form .form-group {
    margin-bottom: 1rem;
}

/* 内容区域 */
.content {
    flex: 1;
    padding-right: 0.5rem;
}

.resource-count {
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.resource-actions-container {
    display: flex;
    gap: 0.5rem;
}

#resource-count {
    font-weight: bold;
    color: var(--primary-color);
}

/* 批量操作工具栏 - 现代轻量风格 */
.batch-operations-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.03);
    padding: 1rem 1.25rem;
    border-radius: 12px;
    margin-bottom: 1.25rem;
    box-shadow: 0 2px 6px var(--shadow-color);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.batch-selection-info {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--dark-color);
}

.batch-operations {
    display: flex;
    gap: 0.75rem;
}

#selected-count {
    font-weight: 600;
    color: var(--primary-color);
}

.filter-indicator {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    margin-left: 0.5rem;
    font-size: 0.8rem;
}

.btn.mini {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    background-color: var(--btn-bg);
    color: white;
    border: none;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
    height: 32px;
    border-radius: 6px;
}

.btn.mini::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0.1) 30%,
        rgba(255, 255, 255, 0) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(30deg);
    z-index: -1;
    transition: transform 0.4s;
}

.btn.mini:hover {
    background-color: var(--btn-hover);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn.mini:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn.mini:hover::before {
    transform: rotate(30deg) translate(10%, 10%);
}

/* 激活的筛选条件容器 */
.active-filters-container {
    margin-bottom: 1rem;
    background-color: rgba(0, 0, 0, 0.02);
    border-radius: 12px;
    padding: 0.75rem;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.active-filters-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.active-filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background-color: rgba(0, 0, 0, 0.05);
    color: #000000;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.active-filter-tag .filter-type {
    font-weight: 600;
    margin-right: 0.2rem;
}

.active-filter-tag .remove-filter {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.6);
    font-size: 0.7rem;
    margin-left: 0.3rem;
    transition: all 0.2s ease;
}

.active-filter-tag .remove-filter:hover {
    background-color: rgba(255, 255, 255, 0.9);
    transform: scale(1.1);
}

/* 分组相关样式 */
.group-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background-color: var(--tag-bg);
    border-radius: 10px;
    transition: all 0.2s cubic-bezier(0.215, 0.61, 0.355, 1);
    border: 1px solid transparent;
}

.group-item:hover {
    background-color: rgba(0, 0, 0, 0.04);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.group-item.selected {
    background-color: var(--selection-bg);
    border: 1px solid rgba(0, 113, 227, 0.1);
    box-shadow: 0 2px 8px rgba(0, 113, 227, 0.08);
}

.group-item-name {
    font-weight: 500;
    font-size: 0.9rem;
}

.group-item-count {
    font-size: 0.75rem;
    color: var(--secondary-color);
    background-color: rgba(0, 0, 0, 0.05);
    padding: 0.1rem 0.5rem;
    border-radius: 10px;
}

.group-actions {
    display: flex;
    gap: 0.3rem;
}

.group-action-btn {
    background: var(--btn-bg);
    border: none;
    cursor: pointer;
    color: white;
    font-size: 0.75rem;
    padding: 0.2rem;
    border-radius: 6px;
    transition: all 0.2s cubic-bezier(0.215, 0.61, 0.355, 1);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.group-action-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0.1) 30%,
        rgba(255, 255, 255, 0) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(30deg);
    z-index: -1;
    transition: transform 0.4s;
}

.group-action-btn:hover {
    color: white;
    background-color: var(--btn-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.group-action-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.group-action-btn:hover::before {
    transform: rotate(30deg) translate(10%, 10%);
}

.group-action-btn.remove:hover {
    background-color: var(--danger-color);
}

/* 笔记列表样式 - 极简高性能版 */
.notes-list {
    margin-top: 0.25rem;
    max-height: 180px;
    overflow-y: auto;
    contain: content;
    will-change: auto;
    transform: translateZ(0);
    scrollbar-width: thin;
    padding-right: 2px;
}

.note-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.4rem 0.5rem;
    margin-bottom: 0.2rem;
    background-color: rgba(0, 0, 0, 0.02);
    border-radius: 4px;
    transition: none;
    border: none;
    cursor: pointer;
    contain: content;
    transform: translateZ(0);
    will-change: auto;
    height: 28px;
}

.note-item:hover {
    background-color: rgba(0, 0, 0, 0.04);
}

.note-item.active {
    background-color: rgba(0, 113, 227, 0.08);
    position: relative;
}

.note-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background-color: var(--primary-color);
    opacity: 0.8;
}

.note-item-content {
    flex: 1;
    overflow: hidden;
    transform: translateZ(0);
    max-width: calc(100% - 50px);
}

.note-title {
    font-weight: 500;
    margin-bottom: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.75rem;
    color: #333;
    transform: translateZ(0);
}

.note-date {
    font-size: 0.65rem;
    color: #666;
    transform: translateZ(0);
}

.note-actions {
    display: flex;
    gap: 0.2rem;
    opacity: 0;
    transition: none;
    transform: translateZ(0);
    will-change: auto;
    pointer-events: none;
}

.note-item:hover .note-actions {
    opacity: 1;
    pointer-events: auto;
}

.note-action-btn {
    background: #333;
    border: none;
    cursor: pointer;
    color: white;
    font-size: 0.7rem;
    padding: 0;
    border-radius: 4px;
    transition: none;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: none;
    transform: translateZ(0);
    -webkit-tap-highlight-color: transparent;
}

.note-action-btn:hover {
    background-color: #444;
}

.note-action-btn.delete:hover {
    background-color: var(--danger-color);
}

.note-action-btn.edit:hover {
    background-color: var(--primary-color);
}

/* 笔记查看样式 - 高性能版 */
.note-view-date {
    font-size: 0.8rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    transform: translateZ(0);
}

.note-view-content {
    line-height: 1.6;
    white-space: pre-wrap;
    transform: translateZ(0);
    contain: content;
    will-change: auto;
}

/* 笔记模态框优化 */
#note-modal .modal-content,
#note-view-modal .modal-content {
    contain: content;
    will-change: auto;
    transform: translateZ(0);
}

#note-content {
    resize: vertical;
    min-height: 150px;
    transition: height var(--fast-transition);
    will-change: auto;
    transform: translateZ(0);
    -webkit-overflow-scrolling: touch;
}

/* 内存优化相关 */
.memory-optimized {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03) !important;
    transform: none !important;
    transition: none !important;
}

/* 资源卡片中的分组按钮 */
.add-to-group-btn {
    position: absolute;
    top: 0.75rem;
    right: 2.75rem;
    background: var(--btn-bg);
    border: none;
    border-radius: 6px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
    overflow: hidden;
    z-index: 1;
}

.add-to-group-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0.1) 30%,
        rgba(255, 255, 255, 0) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(30deg);
    z-index: -1;
    transition: transform 0.4s;
}

.resource-card:hover .add-to-group-btn {
    opacity: 1;
}

.add-to-group-btn:hover {
    color: white;
    background-color: var(--btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.add-to-group-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.add-to-group-btn:hover::before {
    transform: rotate(30deg) translate(10%, 10%);
}

/* 平滑滚动与性能优化 - 超高性能版 */
html {
    scroll-behavior: smooth;
}

body {
    overflow-y: scroll;
    -webkit-font-smoothing: subpixel-antialiased;
}

/* 窗口调整大小防抖优化 */
.resize-active * {
    transition: none !important;
    animation: none !important;
}

.resizing {
    cursor: col-resize;
}

.resizing * {
    pointer-events: none !important;
    transition: none !important;
}

/* 页面可见性优化 */
.page-hidden * {
    transition: none !important;
    animation: none !important;
}

/* 优化滚动性能 */
.content {
    will-change: auto;
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-font-smoothing: subpixel-antialiased;
    contain: layout style;
}

.sidebar {
    will-change: auto;
    transform: translateZ(0);
    -webkit-font-smoothing: subpixel-antialiased;
    contain: layout style;
}

.resources-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    will-change: transform;
    contain: content; /* 提高渲染性能 */
}

/* 资源卡片 - 现代轻量风格 */
.resource-card {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 1.25rem;
    box-shadow: 0 2px 8px var(--shadow-color);
    transition: transform var(--fast-transition),
                box-shadow var(--fast-transition);
    position: relative;
    display: flex;
    flex-direction: column;
    margin-bottom: 1.25rem;
    will-change: var(--will-change-minimal);
    transform: var(--gpu-acceleration);
    contain: layout style;
    border: 1px solid transparent;
    -webkit-tap-highlight-color: transparent;
}

.resource-card:hover {
    transform: translateY(-1px) var(--gpu-acceleration);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.03);
}

/* 批量选择模式 */
.batch-mode .resource-card {
    padding-left: 3rem;
}

.resource-checkbox {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    display: none;
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.batch-mode .resource-checkbox {
    display: block;
}

.resource-card.selected {
    background-color: var(--selection-bg);
    box-shadow: 0 2px 12px rgba(0, 113, 227, 0.1);
}

/* 淡入动画 - 极致性能优化 */
.resource-card.fade-in {
    opacity: 0;
    transform: translateY(5px) var(--gpu-acceleration);
    transition: opacity var(--micro-transition),
                transform var(--micro-transition);
    will-change: var(--will-change-minimal);
    pointer-events: none; /* 防止在动画期间触发事件 */
}

.resource-card.fade-in.visible {
    opacity: 1;
    transform: translateY(0) var(--gpu-acceleration);
    pointer-events: auto;
}

.resource-title {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.resource-title a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.resource-title a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.resource-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.4rem;
    font-size: 0.75rem;
    color: var(--secondary-color);
}

.resource-category {
    display: inline-block;
    background-color: var(--tag-bg);
    color: var(--dark-color);
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 500;
    transition: var(--transition);
}

.resource-card:hover .resource-category {
    background-color: rgba(0, 0, 0, 0.05);
}

.resource-level {
    display: inline-block;
    background-color: rgba(0, 113, 227, 0.06);
    color: var(--primary-color);
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 500;
    transition: var(--transition);
}

.resource-card:hover .resource-level {
    background-color: rgba(0, 113, 227, 0.1);
}

.resource-domain {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    color: var(--secondary-color);
    font-size: 0.7rem;
    transition: var(--transition);
}

.resource-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.4rem;
}

.resource-tag {
    background-color: var(--tag-bg);
    color: var(--secondary-color);
    padding: 0.15rem 0.4rem;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 500;
    transition: var(--transition);
}

.resource-tag:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--dark-color);
}

.resource-actions {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    display: flex;
    gap: 0.3rem;
    opacity: 0;
    transition: opacity var(--fast-transition);
    will-change: var(--will-change-minimal);
}

.resource-card:hover .resource-actions {
    opacity: 1;
}

.action-btn {
    background: var(--btn-bg);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.75rem;
    color: white;
    transition: transform var(--micro-transition),
                background-color var(--micro-transition),
                box-shadow var(--micro-transition);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    z-index: 1;
    -webkit-tap-highlight-color: transparent;
}

.action-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0.15) 0%,
        rgba(255, 255, 255, 0.05) 30%,
        rgba(255, 255, 255, 0) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(30deg);
    z-index: -1;
    transition: transform var(--fast-transition);
}

.action-btn:hover {
    color: white;
    background-color: var(--btn-hover);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.action-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.action-btn:hover::before {
    transform: rotate(30deg) translate(5%, 5%);
}

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

/* 模态框 - 现代轻量风格 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 1000;
    overflow: auto;
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--card-bg);
    margin: 8% auto;
    width: 90%;
    max-width: 600px;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    animation: modalFadeIn 0.2s cubic-bezier(0.215, 0.61, 0.355, 1);
    overflow: hidden;
    will-change: var(--will-change-minimal);
    transform: var(--gpu-acceleration);
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.98) var(--gpu-acceleration);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1) var(--gpu-acceleration);
    }
}

.modal-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.01);
}

.modal-header h2 {
    font-size: 1.4rem;
    color: var(--dark-color);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.close {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--secondary-color);
    transition: var(--transition);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close:hover {
    color: var(--danger-color);
    background-color: rgba(0, 0, 0, 0.03);
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    padding: 1.25rem 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    background-color: rgba(0, 0, 0, 0.01);
}

/* 表单样式 - 现代轻量风格 */
.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.6rem;
    font-weight: 500;
    color: var(--dark-color);
    font-size: 0.9rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.85rem 1.2rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 0.95rem;
    background-color: rgba(0, 0, 0, 0.02);
    transition: var(--transition);
    color: var(--dark-color);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.08);
    background-color: white;
}

/* 标签页 - 现代轻量风格 */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.75rem;
}

.tab-btn {
    padding: 0.85rem 1.75rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--secondary-color);
    border-bottom: 3px solid transparent;
    transition: var(--transition);
    font-weight: 500;
}

.tab-btn:hover {
    color: var(--dark-color);
    background-color: rgba(0, 0, 0, 0.01);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

.tab-content.active {
    display: block;
}

#file-input {
    margin-bottom: 1rem;
}

#json-input {
    width: 100%;
    height: 200px;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: monospace;
    resize: vertical;
}

.hint {
    font-size: 0.85rem;
    color: var(--secondary-color);
    margin-top: 0.5rem;
}

/* 提示框 - 现代轻量风格 */
.toast {
    position: fixed;
    bottom: 2.5rem;
    right: 2.5rem;
    padding: 1rem 1.75rem;
    background-color: var(--btn-bg);
    color: white;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    z-index: 1001;
    opacity: 0;
    transform: translateY(15px) var(--gpu-acceleration);
    transition: opacity var(--normal-transition),
                transform var(--normal-transition);
    font-weight: 500;
    backdrop-filter: blur(5px);
    will-change: var(--will-change-minimal);
}

.toast.show {
    opacity: 1;
    transform: translateY(0) var(--gpu-acceleration);
}

/* 分页控件 - 现代轻量风格 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
    padding: 1rem 0;
    position: sticky;
    bottom: 0;
    background: linear-gradient(to bottom,
        rgba(247, 248, 250, 0) 0%,
        rgba(247, 248, 250, 0.9) 20%,
        rgba(247, 248, 250, 1) 100%);
    padding-top: 2.5rem;
    z-index: 10;
}

.pagination-btn {
    padding: 0.5rem 1.25rem;
    background-color: var(--btn-bg);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform var(--fast-transition),
                background-color var(--fast-transition),
                box-shadow var(--fast-transition);
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
    height: 40px;
    will-change: var(--will-change-minimal);
    transform: var(--gpu-acceleration);
    -webkit-tap-highlight-color: transparent;
}

.pagination-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0.1) 30%,
        rgba(255, 255, 255, 0) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(30deg);
    z-index: -1;
    transition: transform 0.4s;
}

.pagination-btn:hover:not(:disabled) {
    background-color: var(--btn-hover);
    transform: translateY(-1px) var(--gpu-acceleration);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.08);
}

.pagination-btn:hover:not(:disabled)::before {
    transform: rotate(30deg) translate(5%, 5%);
}

.pagination-btn:active:not(:disabled) {
    transform: translateY(0) var(--gpu-acceleration);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    transition: transform 0.05s ease-out, box-shadow 0.05s ease-out;
}

.pagination-btn:disabled {
    background-color: var(--secondary-color);
    color: rgba(255, 255, 255, 0.7);
    cursor: not-allowed;
    box-shadow: none;
    opacity: 0.5;
}

.page-info {
    margin: 0 1.25rem;
    font-size: 0.85rem;
    color: var(--dark-color);
    background-color: #ffffff;
    padding: 0.6rem 1.25rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px var(--shadow-color);
    font-weight: 500;
    transition: var(--transition);
}

#current-page, #total-pages {
    font-weight: 600;
    color: var(--primary-color);
}

/* 资源加载动画 - 现代轻量风格 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem;
    width: 100%;
}

.loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(0, 113, 227, 0.08);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 0.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    box-shadow: 0 0 10px rgba(0, 113, 227, 0.05);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 空状态 - 现代轻量风格 */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    color: var(--secondary-color);
    background-color: #ffffff;
    border-radius: 16px;
    margin: 2rem 0;
    box-shadow: 0 4px 16px var(--shadow-color);
    transition: var(--transition);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
    opacity: 0.4;
    transition: var(--transition);
}

.empty-state:hover i {
    opacity: 0.6;
    transform: scale(1.05);
}

.empty-state p {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

/* 移动端侧边栏切换按钮 */
.mobile-sidebar-toggle {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    z-index: 99;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.mobile-sidebar-toggle:hover {
    transform: scale(1.05);
    background-color: #0062c4;
}

.mobile-sidebar-toggle:active {
    transform: scale(0.95);
}

/* 响应式设计 - 现代轻量风格 */
@media (max-width: 992px) {
    main {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        margin-bottom: 1.5rem;
        height: auto;
        max-height: 320px;
        position: relative;
        top: 0;
        margin-right: 0;
    }

    .filter-list {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        max-height: none;
        padding-left: 0;
    }

    .filter-list li {
        margin-bottom: 0;
        flex: 0 0 auto;
    }

    .sidebar-section {
        margin-bottom: 1.5rem;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        height: auto;
    }

    .logo {
        margin-bottom: 1rem;
        text-align: center;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .search-container {
        margin: 1rem 0;
        max-width: 100%;
    }

    .actions {
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.5rem;
        margin-top: 0.5rem;
    }

    .btn {
        padding: 0.4rem 0.75rem;
        font-size: 0.8rem;
        height: 36px;
    }

    .batch-operations-toolbar {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }

    .batch-operations {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0;
    }

    header {
        padding: 0.75rem;
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .actions {
        overflow-x: auto;
        padding-bottom: 0.5rem;
        justify-content: flex-start;
        flex-wrap: nowrap;
    }

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

    .actions::-webkit-scrollbar-thumb {
        background: rgba(0, 0, 0, 0.1);
        border-radius: 3px;
    }

    .modal-content {
        margin: 0;
        width: 100%;
        height: 100%;
        max-width: none;
        border-radius: 0;
    }

    .modal-header {
        padding: 1rem;
    }

    .modal-body {
        padding: 1rem;
    }

    .modal-footer {
        padding: 1rem;
    }

    .pagination {
        flex-direction: row;
        gap: 0.5rem;
        padding: 0.75rem 0;
    }

    .page-info {
        margin: 0 0.5rem;
        padding: 0.4rem 0.75rem;
    }

    .resource-card {
        padding: 1rem 0.75rem;
        margin-bottom: 0.75rem;
        border-radius: 8px;
    }

    .resource-actions {
        opacity: 1;
        top: 0.75rem;
        right: 0.75rem;
    }

    .resource-title {
        font-size: 0.95rem;
        padding-right: 2.5rem;
        line-height: 1.2;
    }

    .resource-meta {
        gap: 0.3rem;
    }

    .resource-category, .resource-level, .resource-tag {
        font-size: 0.65rem;
        padding: 0.15rem 0.4rem;
    }

    .footer {
        padding: 0.5rem;
    }

    /* 移动端侧边栏 */
    .mobile-sidebar-toggle {
        display: flex;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        height: 100vh;
        max-height: 100vh;
        z-index: 1000;
        background-color: white;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
        padding: 1rem;
        overflow-y: auto;
    }

    .sidebar.active {
        left: 0;
    }

    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    .sidebar-overlay.active {
        display: block;
    }

    .sidebar-close {
        position: absolute;
        top: 0.5rem;
        right: 0.5rem;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--secondary-color);
        cursor: pointer;
    }

    main {
        padding: 0 0.5rem;
    }

    .content {
        padding-right: 0;
    }

    /* 调整模态框在移动端的样式 */
    @keyframes modalFadeIn {
        from {
            opacity: 0;
            transform: translateY(0) scale(1) var(--gpu-acceleration);
        }
        to {
            opacity: 1;
            transform: translateY(0) scale(1) var(--gpu-acceleration);
        }
    }
}

/* 页脚样式 - 极简版 */
.footer {
    text-align: center;
    padding: 0.5rem 0;
    margin-top: 1rem;
    color: var(--secondary-color);
    font-size: 0.75rem;
    opacity: 0.8;
    position: relative;
    transition: none;
    transform: translateZ(0);
    will-change: auto;
    -webkit-font-smoothing: subpixel-antialiased;
    height: var(--footer-height);
    display: flex;
    align-items: center;
    justify-content: center;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.footer span {
    position: relative;
    display: inline-block;
    padding: 0 0.5rem;
    transform: translateZ(0);
    font-weight: 500;
}

.footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--micro-transition);
}

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