/* 标签页 */
.tabs-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 16px;
}
.tabs-wrapper {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
}
.tabs {
    display: flex;
    gap: 4px;
    background: var(--md-sys-color-surface-variant);
    padding: 4px;
    border-radius: var(--md-sys-shape-corner-full);
    width: fit-content;
}
.tab {
    padding: 10px 24px;
    border-radius: var(--md-sys-shape-corner-full);
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--md-sys-color-on-surface-variant);
    font-weight: 500;
    font-size: 14px;
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
    white-space: nowrap;
}
.tab.active {
    background: var(--md-sys-color-surface);
    color: var(--md-sys-color-primary);
    box-shadow: var(--md-sys-elevation-level1);
}

/* 文档网格 */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
                transform var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.doc-grid.fade-out { opacity: 0.4; transition: opacity 0.15s ease; }

/* 文档卡片 */
.doc-card {
    background: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: 16px;
    box-shadow: var(--md-sys-elevation-level1);
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
    cursor: pointer;
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
    will-change: opacity, transform;
}
.doc-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--md-sys-elevation-level2);
    border-color: var(--md-sys-color-primary);
}
.doc-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-right: 80px;
}
.doc-card p {
    font-size: 13px;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: 4px;
}
.doc-card .html-status {
    color: #6750A4;
    font-weight: 500;
    font-size: 12px;
    background: #EADDFF;
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-top: 4px;
}

/* 卡片操作按钮 */
.doc-card-actions {
    position: absolute;
    right: 12px;
    top: 16px;
    display: flex;
    flex-direction: row;
    gap: 4px;
}