/* 编年索引页面样式 - timeline.html 专用 */

/* ── 三列布局 ── */
.timeline-index .timeline-entry {
    display: grid;
    grid-template-columns: 130px 360px 1fr;
    grid-template-areas: "year states refs";
    align-items: start;
    gap: 0 12px;
    padding: 6px 0;
    border-bottom: 1px solid #f0ece4;
}

/* Col 1: 年份 + 计数 */
.timeline-index .entry-year {
    grid-area: year;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-top: 2px;
}

/* 年份名称用暗青色 */
.timeline-index .entry-year .canonical-name.time {
    color: #008B8B;
    font-style: italic;
    font-size: 0.95em;
    font-weight: bold;
}

.timeline-index .entry-count {
    font-size: 0.78em;
    color: #aaa;
}

/* 世纪标题用暗青色 */
.timeline-index .letter-heading {
    color: #008B8B;
    border-left-color: #008B8B;
}

/* ── Col 2: 诸侯国纪年网格 ── */
.timeline-index .entry-states {
    grid-area: states;
}

.timeline-index .state-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px 4px;
    font-size: 0.8em;
    line-height: 1.6;
}

/* 每个诸侯国单元格 */
.timeline-index .state-cell {
    display: flex;
    gap: 2px;
    white-space: nowrap;
    overflow: hidden;
}

.timeline-index .state-cell.empty {
    /* placeholder: keeps grid alignment, invisible */
    visibility: hidden;
}

/* 国名标签（小灰色） */
.timeline-index .state-label {
    color: #aaa;
    font-size: 0.88em;
    flex-shrink: 0;
    min-width: 1em;
}

/* 君主纪年 */
.timeline-index .state-year {
    color: #555;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* fallback: 无网格数据时的紧凑别名 */
.timeline-index .alias-list {
    font-size: 0.82em;
    color: #666;
    line-height: 1.7;
}

/* ── Col 3: 文本引用 + 事件 ── */
.timeline-index .entry-refs {
    grid-area: refs;
    font-size: 0.88em;
}

/* 文本引用行 */
.timeline-index .text-refs {
    margin-bottom: 0.25em;
    color: #444;
}

/* 事件列表 */
.timeline-index .event-list {
    margin: 0;
    padding-left: 1.1em;
    list-style: disc;
    color: #555;
}

.timeline-index .event-item {
    margin: 0;
    line-height: 1.5;
}

.timeline-index .event-ref {
    color: #4682B4;
    text-decoration: none;
}

.timeline-index .event-ref:hover {
    text-decoration: underline;
}

.timeline-index .event-id {
    color: #bbb;
    font-size: 0.82em;
    margin-right: 0.2em;
}

.timeline-index .approx-mark {
    color: #ccc;
    font-style: italic;
    margin-right: 0.15em;
    cursor: default;
}

/* ── 响应式：窄屏单列 ── */
@media (max-width: 900px) {
    .timeline-index .timeline-entry {
        grid-template-columns: 1fr;
        grid-template-areas:
            "year"
            "states"
            "refs";
    }
    .timeline-index .state-grid {
        grid-template-columns: 1fr;
    }
}