/* ============================================================
   archive.css - 归档页样式
   ============================================================ */

.archive-page {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* ============================================================
   布局
   ============================================================ */
.archive-layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--space-md);
    align-items: start;
}

@media (max-width: 768px) {
    .archive-layout {
        grid-template-columns: 1fr;
    }
}

/* ============================================================
   时间轴（左栏）
   ============================================================ */
.archive-timeline-wrap {
    position: sticky;
    top: var(--space-md);
}

@media (max-width: 768px) {
    .archive-timeline-wrap {
        position: static;
    }
}

.archive-timeline {
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: calc(100vh - 40px);
    overflow: hidden;
}

@media (max-width: 768px) {
    .archive-timeline {
        max-height: none;
    }
}

.timeline-title {
    font-size: var(--font-base);
    font-weight: 600;
    color: var(--text-primary);
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-light);
}

/* 统计块 */
.timeline-stats {
    display: flex;
    gap: 8px;
}

.timeline-stats .stat-item {
    flex: 1;
    text-align: center;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    padding: 8px 4px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.timeline-stats .stat-number {
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

.timeline-stats .stat-label {
    font-size: var(--font-xs);
    color: var(--text-muted);
}

/* 月份列表 */
.timeline-list {
    flex: 1;
    overflow-y: auto;
    padding: 2px;
    margin: -2px;
    scrollbar-width: thin;
}

.timeline-list::-webkit-scrollbar {
    width: 4px;
}

.timeline-list::-webkit-scrollbar-thumb {
    background: var(--border-base);
    border-radius: var(--radius-full);
}

.timeline-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 5px 10px;
    border-radius: var(--radius-full);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: var(--font-sm);
    transition: all var(--transition-fast);
    margin-bottom: 2px;
}

.timeline-link:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.timeline-link.active {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.25);
}

.timeline-link .timeline-label {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.timeline-link .timeline-count {
    font-size: 11px;
    background: rgba(148, 163, 184, 0.2);
    color: var(--text-muted);
    padding: 0 7px;
    border-radius: var(--radius-full);
    line-height: 1.6;
    flex-shrink: 0;
}

.timeline-link.active .timeline-count {
    background: rgba(255, 255, 255, 0.25);
    color: #fff;
}

.timeline-footer {
    padding-top: 10px;
    border-top: 1px solid var(--border-light);
}

.timeline-footer .btn {
    width: 100%;
    justify-content: center;
}

/* ============================================================
   文章列表（右栏）
   ============================================================ */
.archive-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    min-width: 0;
}

.archive-group {
    padding: var(--space-md) var(--space-lg);
    scroll-margin-top: 100px;
}

.archive-group-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    padding-bottom: 10px;
    margin-bottom: 6px;
    border-bottom: 1px dashed var(--border-light);
}

.archive-group-title {
    font-size: var(--font-lg);
    font-weight: 700;
    color: var(--text-primary);
    padding-left: 12px;
    border-left: 4px solid var(--primary-color);
}

.archive-group-count {
    font-size: var(--font-xs);
    color: var(--text-muted);
    background: var(--bg-hover);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

/* 文章行 */
.archive-list {
    display: flex;
    flex-direction: column;
}

.archive-item {
    display: flex;
    align-items: baseline;
    gap: 14px;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.archive-item:hover {
    background: var(--bg-hover);
}

.archive-item-day {
    font-size: var(--font-sm);
    color: var(--text-muted);
    font-family: ui-monospace, monospace;
    flex-shrink: 0;
    width: 30px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.archive-item-link {
    flex: 1;
    min-width: 0;
    font-size: var(--font-base);
    color: var(--text-primary);
    text-decoration: none;
    line-height: 1.6;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color var(--transition-fast);
}

.archive-item-link:hover {
    color: var(--primary-color);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 768px) {
    .archive-page {
        max-width: 100%;
    }

    .archive-timeline {
        padding: var(--space-sm) var(--space-md);
    }

    /* 移动端：时间轴变成横向滚动条 */
    .timeline-list {
        display: flex;
        flex-direction: row;
        gap: 6px;
        overflow-x: auto;
        overflow-y: hidden;
        padding-bottom: 4px;
    }

    .timeline-list li {
        flex-shrink: 0;
    }

    .timeline-link {
        white-space: nowrap;
        padding: 4px 12px;
        margin-bottom: 0;
    }

    .archive-group {
        padding: var(--space-sm) var(--space-md);
    }

    .archive-group-title {
        font-size: var(--font-base);
        padding-left: 10px;
        border-left-width: 3px;
    }

    .archive-item {
        gap: 10px;
        padding: 5px 6px;
    }

    .archive-item-link {
        font-size: var(--font-sm);
    }

    .timeline-stats {
        display: none;
    }

    .timeline-footer {
        display: none;
    }
}

@media (max-width: 480px) {
    .archive-group {
        padding: 12px;
    }

    .archive-group-header {
        gap: 6px;
    }

    .archive-group-title {
        font-size: 14px;
    }

    .archive-group-count {
        font-size: 10px;
        padding: 1px 8px;
    }

    .archive-item-day {
        width: 22px;
        font-size: 11px;
    }

    .archive-item-link {
        font-size: 13px;
    }

    .archive-timeline {
        padding: 10px 12px;
    }

    .timeline-title {
        font-size: 13px;
        padding-bottom: 6px;
    }

    .timeline-link {
        font-size: 12px;
        padding: 3px 10px;
    }
}