/* style.css - 完整整合版 */

/* 引入 Google Fonts (思源宋體) */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@300;400;700&display=swap');

:root {
    /* 日間模式變數 */
    --bg-color: #fdfbf7;     /* 護眼米色 */
    --text-color: #2c2c2c;   /* 深灰色 */
    --sidebar-bg: #2c3e50;
    --sidebar-text: #ecf0f1;
    --accent-color: #c0392b; /* 絳紅色 (強調色) */
    --paper-texture: #fff;   /* 卡片/信件背景 */
    --quote-color: #555;
    --link-hover: #e74c3c;
}

/* 夜間模式變數 */
[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #cccccc;
    --sidebar-bg: #121212;
    --sidebar-text: #888;
    --accent-color: #e74c3c;
    --paper-texture: #2a2a2a;
    --quote-color: #999;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Noto Serif TC', 'Songti TC', serif; /* 小說字體 */
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 2.0;
    display: flex;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

/* --- 左側導航欄 --- */
nav {
    width: 250px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 20px;
    position: fixed;
    height: 100%;
    overflow-y: auto;
    transition: transform 0.3s ease;
    z-index: 100;
}

nav h2 {
    font-size: 1.4rem;
    border-bottom: 1px solid #555;
    padding-bottom: 15px;
    margin-top: 0;
    color: #fff;
}

nav ul { list-style: none; padding: 0; }

nav ul li a {
    color: #bdc3c7;
    text-decoration: none;
    display: block;
    padding: 10px 0;
    transition: 0.2s;
    font-size: 1rem;
}

nav ul li a:hover, nav ul li a.active {
    color: #fff;
    padding-left: 8px;
    border-left: 3px solid var(--accent-color);
}

/* 夜間模式切換按鈕 */
.theme-toggle {
    margin-top: 30px;
    background: transparent;
    border: 1px solid #7f8c8d;
    color: var(--sidebar-text);
    padding: 8px 15px;
    cursor: pointer;
    border-radius: 20px;
    font-size: 0.8rem;
    width: 100%;
    transition: 0.2s;
}
.theme-toggle:hover { background: rgba(255,255,255,0.1); color: #fff; }

/* --- 右側主要內容區 --- */
main {
    margin-left: 250px;
    padding: 40px 60px;
    max-width: 900px;
    width: 100%;
}

h1 { font-size: 2.5rem; margin-bottom: 0.5rem; color: var(--accent-color); }
h3 { margin-top: 2rem; color: var(--text-color); }

.chapter-meta {
    color: var(--quote-color);
    font-style: italic;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    border-bottom: 1px solid #ddd;
    padding-bottom: 20px;
}

/* --- 小說特殊排版 --- */
.drop-cap::first-letter {
    font-size: 3.5rem;
    float: left;
    line-height: 0.8;
    padding-right: 8px;
    padding-top: 4px;
    color: var(--accent-color);
    font-weight: 700;
}

.thought { /* 內心獨白 */
    color: var(--quote-color);
    font-style: italic;
    border-left: 3px solid var(--accent-color);
    padding-left: 15px;
    margin: 1.5rem 0;
}

.letter { /* 信件樣式 */
    background-color: var(--paper-texture);
    border: 1px solid #ddd;
    padding: 30px;
    margin: 30px 10px;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.05);
    font-family: cursive, 'KaiTi', serif;
}
[data-theme="dark"] .letter { border-color: #444; }

.flashback { /* 回憶/夢境 */
    color: #666;
    border-left: 1px solid #ccc;
    padding-left: 20px;
    margin: 2rem 0;
    font-size: 0.95rem;
}
[data-theme="dark"] .flashback { color: #999; border-color: #444; }

.scene-label { /* 場景切換 */
    text-align: center;
    font-size: 0.9rem;
    color: var(--accent-color);
    margin: 3rem 0 1rem 0;
    font-weight: bold;
    letter-spacing: 2px;
}

.divider { text-align: center; margin: 3rem 0; color: #bbb; letter-spacing: 10px; }
.note-box { background: #f1f8ff; border-left: 5px solid #3498db; padding: 15px; margin: 20px 0; font-family: sans-serif; font-size: 0.9rem; }

/* --- 角色卡片 (Character Grid) --- */
.character-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.char-card {
    background: var(--paper-texture);
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 30px 20px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}
.char-card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
[data-theme="dark"] .char-card { border-color: #444; }

.char-avatar {
    width: 120px; height: 120px; border-radius: 50%; object-fit: cover;
    border: 3px solid var(--accent-color); margin-bottom: 15px;
}
.char-name { font-size: 1.4rem; margin: 10px 0; color: var(--accent-color); font-weight: bold; }
.