/* ==========================================
   DY Company Timeline v1.5.0
   大郁斜槓工作室 | wpdu.me

   每個 item 是一個 flex row，分左右兩欄：
   
   左側項目（--left）:
   [卡片內容 left-col] | ☉ | [空白 right-col]
   年份標籤貼在卡片右上角外側（靠中央線）

   右側項目（--right）:
   [空白 left-col] | ☉ | [年份+卡片 right-col]
   年份在卡片正上方
   ========================================== */

.dy-timeline-section-title {
    text-align: center;
    font-size: 2em;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 60px;
    color: #111;
}

/* ==========================================
   容器
   ========================================== */
.dy-timeline {
    position: relative;
    max-width: 980px;
    margin: 0 auto;
    padding: 20px 0 60px;
}

/* 中央縱線 */
.dy-timeline--zigzag::before {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background-color: #cc0000;
    z-index: 0;
}
.dy-timeline--left-align::before {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    left: 28px;
    width: 2px;
    background-color: #cc0000;
    z-index: 0;
}

/* ==========================================
   項目容器：flex row
   ========================================== */
.dy-timeline-item {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    margin-bottom: 40px;
}

/* 節點：絕對定位在中央線，垂直位置靠上 */
.dy-timeline-item__dot {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    z-index: 4;
    width: 14px;
    height: 14px;
    background-color: #cc0000;
    border: 2px solid #cc0000;
    border-radius: 50%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
}
.dy-timeline-item__dot.dy-dot-type-image {
    background: none;
    border: none;
    width: auto;
    height: auto;
}
.dy-timeline-item__dot.dy-dot-type-image img {
    display: block;
    border-radius: 50%;
    object-fit: cover;
}
.dy-timeline--left-align .dy-timeline-item__dot {
    left: 28px;
}

/* ==========================================
   左半欄 / 右半欄
   ========================================== */
.dy-timeline-item__col {
    width: 50%;
    box-sizing: border-box;
}

/* 左半欄：padding-right 讓內容不貼到中央線 */
.dy-timeline-item__col--left {
    padding-right: 32px;
}

/* 右半欄：padding-left 讓內容不貼到中央線 */
.dy-timeline-item__col--right {
    padding-left: 32px;
}

/* ==========================================
   年份區塊（卡片外，緊貼中央線那側）
   ========================================== */
.dy-timeline-item__year-wrap {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-bottom: 8px;
}

/* 右側項目：年份靠左對齊（從中央線往右） */
.dy-timeline-item--right .dy-timeline-item__year-wrap {
    align-items: flex-start;
}

/* 左側項目：年份靠右對齊（從中央線往左） */
.dy-timeline-item--left .dy-timeline-item__year-wrap {
    align-items: flex-end;
}

/* 民國標籤 + 西元並排 */
.dy-timeline-item__year-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: nowrap;
}

/* 左側項目：西元在左，民國在右 */
.dy-timeline-item--left .dy-timeline-item__year-row {
    flex-direction: row-reverse;
}

/* 右側項目：民國在左，西元在右 */
.dy-timeline-item--right .dy-timeline-item__year-row {
    flex-direction: row;
}

/* 民國標籤（小紅膠囊） */
.dy-timeline-item__year-badge {
    display: inline-block;
    background-color: #cc0000;
    color: #fff;
    font-size: 0.72em;
    font-weight: 700;
    letter-spacing: 0.02em;
    padding: 2px 7px;
    border-radius: 3px;
    white-space: nowrap;
    line-height: 1.6;
    flex-shrink: 0;
    align-self: center;
}

/* 西元大數字 */
.dy-timeline-item__year-ad {
    font-size: 2em;
    font-weight: 700;
    color: #111;
    white-space: nowrap;
    line-height: 1;
    flex-shrink: 0;
}

/* 副標 */
.dy-timeline-item__year-subtitle {
    font-size: 0.78em;
    color: #666;
    white-space: nowrap;
}

/* ==========================================
   卡片（只有內容，無年份）
   ========================================== */
.dy-timeline-item__card {
    background-color: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 20px 24px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    transition: box-shadow 0.2s ease;
    box-sizing: border-box;
    width: 100%;
}
.dy-timeline-item__card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

/* 左側項目：卡片箭頭朝右（指向中央線） */
.dy-timeline-item--left .dy-timeline-item__card {
    position: relative;
}
.dy-timeline-item--left .dy-timeline-item__card::after {
    content: '';
    position: absolute;
    top: 16px; right: -8px;
    border: 8px solid transparent;
    border-left-color: #e0e0e0;
}
.dy-timeline-item--left .dy-timeline-item__card::before {
    content: '';
    position: absolute;
    top: 17px; right: -6px;
    border: 7px solid transparent;
    border-left-color: #fff;
    z-index: 1;
}

/* 右側項目：卡片無箭頭（年份就在上方，不需要） */

/* ---- 內文 ---- */
.dy-timeline-item__content {
    font-size: 0.9em;
    line-height: 1.8;
    color: #333;
}
.dy-timeline-item__content p { margin: 0 0 8px; }
.dy-timeline-item__content p:last-child { margin-bottom: 0; }
.dy-timeline-item__content ul,
.dy-timeline-item__content ol { margin: 0; padding-left: 1.4em; }
.dy-timeline-item__content li { margin-bottom: 4px; }

/* ==========================================
   靠左單欄
   ========================================== */
.dy-timeline--left-align .dy-timeline-item {
    padding-left: 56px;
}
.dy-timeline--left-align .dy-timeline-item__col--left {
    display: none;
}
.dy-timeline--left-align .dy-timeline-item__col--right {
    width: 100%;
    padding-left: 20px;
}
.dy-timeline--left-align .dy-timeline-item__year-wrap {
    align-items: flex-start;
}
.dy-timeline--left-align .dy-timeline-item__year-row {
    flex-direction: row;
}

/* ==========================================
   捲動進場動畫
   ========================================== */
.dy-timeline--animate .dy-timeline-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.dy-timeline--animate .dy-timeline-item.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   RWD
   ========================================== */
@media (max-width: 768px) {
    .dy-timeline--zigzag::before { left: 20px; }

    .dy-timeline--zigzag .dy-timeline-item {
        flex-direction: column;
        padding-left: 44px;
    }
    .dy-timeline--zigzag .dy-timeline-item__col--left,
    .dy-timeline--zigzag .dy-timeline-item__col--right {
        width: 100%;
        padding-left: 0;
        padding-right: 0;
    }
    /* 左側項目：隱藏空白欄 */
    .dy-timeline--zigzag .dy-timeline-item--left .dy-timeline-item__col--right {
        display: none;
    }
    /* 右側項目：隱藏空白欄 */
    .dy-timeline--zigzag .dy-timeline-item--right .dy-timeline-item__col--left {
        display: none;
    }
    .dy-timeline--zigzag .dy-timeline-item__dot {
        left: 20px;
    }
    .dy-timeline--zigzag .dy-timeline-item__year-wrap {
        align-items: flex-start;
    }
    .dy-timeline--zigzag .dy-timeline-item__year-row {
        flex-direction: row;
    }
    .dy-timeline--zigzag .dy-timeline-item--left .dy-timeline-item__card::after,
    .dy-timeline--zigzag .dy-timeline-item--left .dy-timeline-item__card::before {
        display: none;
    }
}