:root {
    --main-pink: #E58B9D;
    --light-pink: #FEECEF;
    --timeline-line: #F6B5C0;
    --text-dark: #555;
    --year-color: #D6D6D6;
}

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

body {
    font-family: 'Noto Sans TC', sans-serif;
    background-color: var(--light-pink);
    color: var(--text-dark);
    overflow-x: hidden;
}



/* 標題區 */
.header {
    text-align: center;
    padding: 60px 0;
}
.header img { max-width: 280px; }

/* --- 時間軸主體 --- */
.timeline-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 0;
}

/* 中間那條粉紅線 */
.timeline-container::after {
    content: '';
    position: absolute;
    width: 3px;
    background-color: var(--timeline-line);
    top: 0; bottom: 0;
    left: 50%;
    margin-left: -1.5px;
    z-index: 0;
}

/* 時間軸上的每一個項目 */
.timeline-item {
    padding: 10px 40px;
    position: relative;
    background-color: inherit;
    width: 50%;
}

/* 軸線上的圓點 */
.timeline-item::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    right: -9px; /* 靠右對齊中線 */
    background-color: #F6B5C0;
    border: 3px solid var(--timeline-line);
    top: 25px;
    border-radius: 50%;
    z-index: 1;
}

/* 左側項目 */
.left { left: 0; text-align: right; }

/* 右側項目 */
.right { left: 50%; text-align: left; }

.right::after { left: -9px; } /* 點點改到左邊 */

/* 年份標籤 (2021, 2022...) */
.year-label {
    position: absolute;
    font-family: 'Montserrat', sans-serif;
    font-size: 2.5rem;
    color: var(--year-color);
    opacity: 0.5;
    font-weight: 700;
    z-index: 0;
}
.left .year-label { left: -5px; top: 10px; }
.right .year-label { right: -5px; top: 10px; }

/* 內容卡片 */
.content {
        padding: 5px 0; /* 縮小卡片內的上下留白，讓整體更緊湊 */
    position: relative;
}

.date-text {
    color: var(--main-pink);
    font-weight: bold;
    font-family: 'Montserrat', sans-serif;
    margin-bottom: 5px;
    display: block;
}

.title-zh { font-weight: 700; font-size: 1.1rem; margin-bottom: 5px; color: #333; }
.title-en { font-size: 0.85rem; color: #888; line-height: 1.4; margin-bottom: 10px; }

/* 圓形圖片 */
.event-img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid white;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    margin: 10px 0;
}
.left .event-img { margin-left: auto; }

/* 底部結束文字 */
.footer-text {
    text-align: center;
    padding: 80px 0;
    font-family: 'Montserrat', sans-serif;
    color: var(--main-pink);
    font-size: 1.5rem;
    font-weight: bold;
    position: relative;
    width: max-content;
    margin: 0 auto;
    line-height: 0.1; /* 縮小行高，讓打字游標的高度剛好貼齊文字 */
}
.footer-text::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background-color: var(--light-pink); /* 使用背景色遮擋 */
    border-left: 2px solid transparent; /* 把打字游標的線條變細 */
}

.footer-text.active::after {
    animation: typing-uncover 1.5s steps(19, end) forwards, blink-cursor-main 0.75s step-end 2 forwards;
}

/* =========================================
   動畫效果 (Animations)
   ========================================= */
   @keyframes fadeSlideDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes popIn {
    0% { opacity: 0; transform: scale(0.8); }
    70% { opacity: 1; transform: scale(1.05); }
    100% { opacity: 1; transform: scale(1); }
}

.animate-title {
    opacity: 0; /* 初始隱藏，等待滑動到時再顯示 */
}
.animate-title.active {
    animation: fadeSlideDown 0.8s ease-out forwards; /* 加上 active 才會觸發動畫 */
}

/* =========================================
   回到頂部按鈕 (Back to Top)
   ========================================= */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    background-color: var(--main-pink);
    color: white;
    border: none;
    border-radius: 50%;
    width: 55px;
    height: 55px;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(229, 139, 157, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999; /* 確保按鈕永遠在最上層 */
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    transform: translateY(-5px); /* 滑鼠移入稍微上浮 */
    background-color: #d17586; /* 稍微變深的粉紅色 */
}

/* =========================================
   打字機動畫定義
   ========================================= */
   @keyframes typing-uncover {
    from { width: 100%; }
    to { width: 0%; } /* 遮罩縮小到 0，完全露出文字 */
}

@keyframes blink-cursor-main {
    0%, 49% { border-left-color: var(--main-pink); }
    50%, 100% { border-left-color: transparent; }
}

@keyframes blink-cursor-accent {
    0%, 49% { border-left-color: var(--accent-pink); }
    50%, 100% { border-left-color: transparent; }
}
.social-floating svg {
    width: 20px;
    height: 20px;
}

/* =========================================
   左側漂浮目錄 (Floating TOC)
   ========================================= */
.floating-toc {
    position: fixed;
    left: 40px;
    top: 50%;
    transform: translateY(-50%) translateX(-20px);
    background: rgba(255, 255, 255, 0.95);
    padding: 25px 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(229, 139, 157, 0.15);
    border: 1.5px solid #FEECEF; /* 品牌淺粉色 */
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease-out; /* 顯示隱藏的平滑過渡動畫 */
}

.floating-toc.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0); /* 顯示時由左向右滑入 */
}

.floating-toc ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin: 0;
    padding: 0;
}

.floating-toc a {
    color: #555;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    position: relative;
    transition: color 0.3s;
}

.floating-toc a:hover {
    color: #E58B9D; /* 品牌主粉色 */
}