:root {
    /* --- 核心配色變數 --- */
    --bg-body: #121212;
    --bg-panel: #1e1e1e;
    --bg-card: #252525;
    --bg-input: #2a2a2a;
    
    --text-main: #e0e0e0;
    --text-muted: #a0a0a0;
    
    --accent: #bb86fc;
    --accent-hover: #9965f4;
    
    --border: #333333;
    --radius: 12px;
    --shadow: 0 4px 12px rgba(0,0,0,0.5);

    /* --- Bootstrap 覆蓋 --- */
    --bs-body-font-size: 1.25rem; 
    --bs-body-bg: #121212;
    --bs-body-color: #e0e0e0;
}

/* --- 全局設定 --- */
html {
    font-size: 20px !important; /* 維持大字體 */
}

body {
    margin: 0;
    padding: 0;
    width: 100%;
    background-color: var(--bg-body) !important; 
    color: var(--text-main) !important;
    font-family: 'Noto Sans TC', sans-serif;
    font-size: var(--bs-body-font-size) !important; 
    line-height: 1.5; /* 稍微縮減行高，節省空間 */
    scroll-behavior: smooth;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Header --- */
.site-header {
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    padding: 15px 0; /* Header 保持緊湊 */
    margin-bottom: 25px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
    text-align: center;
}

/* --- 主佈局 --- */
.main-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 30px;
    align-items: start;
}

/* =========================================
   側邊控制面板 (Compact Mode - 瘦身版)
   ========================================= */
.control-panel {
    background-color: var(--bg-panel);
    border-radius: var(--radius);
    
    /* 1. 內距縮小：從 20px 減為 15px */
    padding: 15px; 
    
    position: sticky;
    top: 15px;
    
    /* 2. 高度計算：確保不會頂到視窗底部 */
    height: calc(100vh - 30px);
    
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    
    display: flex;
    flex-direction: column;
}

.panel-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

/* 標題與分隔線 */
.panel-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px; /* 縮減間距 */
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border);
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* 表單群組 (搜尋、選單) */
.form-group {
    margin-bottom: 12px; /* 大幅縮減間距 (原本 20px) */
    flex-shrink: 0;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 4px; /* 標籤貼近輸入框 */
    font-weight: 500;
}

/* 輸入框高度微調 */
.form-control, .form-select {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-main);
    
    padding: 8px 12px; /* 上下 padding 縮小 */
    height: auto;      /* 讓內容決定高度 */
    
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s;
    outline: none;
    box-sizing: border-box;
}

.form-control:focus, .form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(187, 134, 252, 0.2);
}

/* 搜尋框 RWD + 微調 */
.input-icon-wrapper {
    position: relative;
    width: 100%;
    max-width: 100%;
    display: block;
}

#searchInput {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box;
    background-color: #222;
    border: 2px solid transparent;
    border-radius: 50px;
    color: #fff;
    
    padding: 8px 20px; /* 緊湊化 */
    padding-right: 45px;
    font-size: 1rem;
    
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236c757d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'%3E%3C/line%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 20px;
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.3);
}

#searchInput:focus {
    background-color: #2a2a2a;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(187, 134, 252, 0.15);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23bb86fc' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'%3E%3C/line%3E%3C/svg%3E");
}

/* Select2 高度壓縮 */
.select2-container--default .select2-selection--single {
    background-color: var(--bg-input) !important;
    border: 1px solid var(--border) !important;
    border-radius: 8px !important;
    height: 42px !important; /* 從 50px 縮減回 42px */
}
.select2-container--default .select2-selection--single .select2-selection__rendered {
    color: var(--text-main) !important;
    line-height: 40px !important;
    padding-left: 12px !important;
    font-size: 1rem !important;
}
.select2-container--default .select2-selection--single .select2-selection__arrow {
    height: 40px !important;
    right: 8px !important;
}
.select2-container--default .select2-selection--single .select2-selection__arrow b {
    border-color: var(--text-muted) transparent transparent transparent !important;
}
.select2-dropdown {
    background-color: var(--bg-panel) !important;
    border: 1px solid var(--accent) !important;
    color: var(--text-main) !important;
    z-index: 9999 !important;
    font-size: 1rem !important;
}
.select2-container--default .select2-results__option {
    color: var(--text-main) !important;
    background-color: transparent !important;
    padding: 8px 12px !important;
}
.select2-container--default .select2-results__option--highlighted[aria-selected] {
    background-color: var(--accent) !important;
    color: #000 !important;
}
.select2-container--default .select2-results__option[aria-selected="true"] {
    background-color: var(--bg-card) !important;
    color: var(--accent) !important;
    font-weight: bold;
}
.select2-search--dropdown .select2-search__field {
    background-color: var(--bg-input) !important;
    color: var(--text-main) !important;
    border: 1px solid var(--border) !important;
    border-radius: 4px !important;
    padding: 6px !important;
}

/* =========================================
   分享 Widget (Flex 自動最大化)
   ========================================= */
.share-widget {
    /* 縮減上方間距，爭取空間 */
    margin-top: 10px; 
    padding-top: 10px;
    border-top: 1px solid var(--border);
    
    /* 自動填滿剩餘高度 */
    flex: 1; 
    
    display: flex;
    flex-direction: column;
    min-height: 0; 
}

.share-widget .panel-title {
    margin-bottom: 8px; /* 標題下方間距縮小 */
    flex-shrink: 0;
}

#shareListContainer {
    background-color: #fff;
    color: #000;
    
    /* Flex 讓它自動長高，不需要寫 max-height */
    flex: 1; 
    overflow-y: auto; 
    
    border-radius: 8px;
    padding: 8px;
    margin-bottom: 8px;
    border: 1px solid #ddd;
    
    scrollbar-width: thin;
    scrollbar-color: #ccc transparent;
}

#shareListContainer::-webkit-scrollbar { width: 5px; }
#shareListContainer::-webkit-scrollbar-track { background: transparent; }
#shareListContainer::-webkit-scrollbar-thumb { background-color: #ccc; border-radius: 10px; }

.share-item {
    display: flex;
    gap: 8px;
    padding: 8px; /* 縮小內距 */
    margin-bottom: 6px;
    background-color: #f8f9fa;
    border-radius: 6px;
    border: 1px solid #eee;
    align-items: center;
    position: relative;
    transition: background 0.2s;
}

.share-item:last-child { margin-bottom: 0; }
.share-item:hover { background-color: #f1f3f5; }

.share-item img {
    width: 50px; /* 縮圖不要太大，省空間 */
    height: 50px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}

.share-item-info {
    flex: 1;
    font-size: 0.9rem;
    line-height: 1.2;
    overflow: hidden;
}

.share-item-title {
    font-weight: bold;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 移除按鈕 */
.share-remove {
    width: 30px; /* 按鈕微縮 */
    height: 30px;
    background-color: #fff5f5;
    border: 1px solid #ffc9c9;
    color: #dc3545;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.9rem;
    margin-left: auto;
    transition: all 0.2s;
}

.share-remove:hover {
    background-color: #dc3545;
    color: #fff;
    transform: scale(1.1);
    box-shadow: 0 2px 5px rgba(220, 53, 69, 0.4);
}

.action-btn {
    flex-shrink: 0;
    width: 100%;
    background-color: var(--accent);
    color: #000;
    border: none;
    padding: 10px; /* 按鈕高度適中 */
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.action-btn:hover:not(:disabled) { background-color: var(--accent-hover); }
.action-btn:disabled { background-color: #444; color: #888; cursor: not-allowed; }

/* --- 內容區 --- */
.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    background: var(--bg-panel);
    padding: 15px 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 10px;
}

.section-title {
    margin: 0;
    font-size: 1.4rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
}

.badge {
    background-color: var(--accent);
    color: #000;
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 1rem;
    margin-left: 10px;
    font-weight: bold;
}

.update-time { font-size: 0.9rem; color: var(--text-muted); }

/* --- 卡片網格 --- */
.anime-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.anime-card {
    background-color: var(--bg-panel);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: relative;
    height: 100%;
}

.anime-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.5);
    border-color: var(--accent);
}

.card-img-wrapper {
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
    background-color: #252525;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.card-img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: transform 0.3s;
}

.anime-card:hover .card-img { transform: scale(1.05); }

.card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.anime-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 12px;
    line-height: 1.4;
    cursor: pointer;
}

.anime-title:hover { text-decoration: underline; }

.info-row {
    display: flex;
    justify-content: space-between;
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.story-box {
    margin-top: 10px;
    font-size: 1rem;
    color: #ccc;
    background-color: #252525;
    padding: 12px;
    border-radius: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    cursor: help;
    margin-bottom: 15px;
    flex: 1;
    transition: background-color 0.2s;
    line-height: 1.6;
}

.story-box:hover { background-color: #333; color: #fff; }

.btn-add {
    background-color: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 10px;
    border-radius: 6px;
    width: 100%;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    font-size: 1.1rem;
}

.btn-add:hover { background-color: var(--accent); color: #000; }

.status-box {
    padding: 40px;
    text-align: center;
    background-color: var(--bg-panel);
    border-radius: var(--radius);
    color: var(--text-muted);
    border: 1px solid var(--border);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.d-none { display: none !important; }

/* --- 回到頂部按鈕 --- */
#backToTopBtn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: rgba(50, 50, 50, 0.9); 
    color: #fff;
    border: 1px solid #555;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 9999;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#backToTopBtn::after {
    content: "TOP";
    font-size: 0.7rem;
    font-weight: bold;
    margin-top: -2px;
}

#backToTopBtn i { font-size: 1.4rem; margin-bottom: 2px; }
#backToTopBtn.show { opacity: 1; visibility: visible; }
#backToTopBtn:hover { background-color: #000; border-color: var(--accent); color: var(--accent); }

/* --- 響應式 (Mobile RWD) --- */
@media (max-width: 900px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
    
    .control-panel {
        position: static;
        height: auto;
        max-height: none;
        margin-bottom: 20px;
        padding: 20px;
    }
    
    .panel-inner {
        height: auto;
        overflow: visible;
    }
    
    .share-widget {
        flex: none;
        height: auto;
        margin-top: 20px;
    }
    
    #shareListContainer {
        flex: none;
        height: auto;
        max-height: 300px;
    }
    
    .form-group-row {
        flex-direction: row;
    }
}

@media (max-width: 768px) {
    #searchInput { font-size: 16px; }
}