/* ==================== 1. RESET & GLOBALS ==================== */
    * { box-sizing: border-box; }
    html, body { height: 100%; margin: 0; overflow: hidden; display: flex; flex-direction: column; font-family: Arial, sans-serif; background: linear-gradient(135deg, #eef2ff, #f8fafc); text-align: center; zoom: 100%; }
    h1.app-title { font-size: 60px; margin: 20px; background: linear-gradient(90deg, #4facfe, #00f2fe); -webkit-background-clip: text; color: transparent; font-weight: 800; cursor: pointer; }

    /* ==================== 2. LAYOUT WRAPPERS ==================== */
    .top-wrapper, .animation-wrapper, .sentence-section { width: 100%; max-width: 1550px; margin-left: auto; margin-right: auto; }
    .top-wrapper, .animation-wrapper { flex-shrink: 0; position: relative; }
    .sentence-section { flex-grow: 1; overflow-y: auto; background: #fff; padding: 20px; border-radius: 15px; margin-top: 10px; margin-bottom: 30px; -webkit-overflow-scrolling: touch; }

    /* ==================== 3. SEARCH & CONTROLS ==================== */
    .search-wrapper { background: #fff; padding: 15px; border-radius: 20px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 4px 12px rgba(0,0,0,.08); }
    .search-wrapper.fixed { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); width: 95%; max-width: 1550px; z-index: 10000; }
    
    .hsk-container { width: 66%; text-align: left; }
    .hsk-buttons { width: 100%; }
    .hskRow { margin: 5px 0; }
    .hskBtn { padding: 8px 14px; border: none; border-radius: 15px; color: white; font-weight: 600; margin: 3px; cursor: pointer; font-size: 14px; }
    .hsk1 { background: #ef4444; } .hsk2 { background: #f97316; } .hsk3 { background: #eab308; } .hsk4 { background: #22c55e; } .hsk5 { background: #06b6d4; } .hsk6 { background: #3b82f6; } .hsk3_0 { background: #8b5cf6; } .hsk3_1 { background: #ec4899; } .hsk3_2 { background: #14b8a6; } .hsk3_3 { background: #f43f5e; } .hsk3_4 { background: #6366f1; }
    
    .search-box { width: 34%; text-align: right; }
    input.input-text { padding: 12px 18px; width: 100%; border-radius: 30px; border: 1px solid #ddd; outline: none; margin-bottom: 12px; }
    
    /* Điều chỉnh hàng nút (Button Row) thành 2 khối để dễ ngắt dòng */
    .buttonRow { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
    .action-btns { display: flex; align-items: center; gap: 10px; }
    
    button, .fileLabel { padding: 10px 18px; border: none; border-radius: 25px; cursor: pointer; font-weight: 600; }
    .findBtn { background: #4facfe; color: white; } .clearBtn { background: #e74c3c; color: white; } .fileLabel { background: #2ecc71; color: white; display: inline-block; }

    /* --- QUICK JUMP CSS NẰM TRONG BUTTON ROW --- */
    .quick-jump { display: flex; align-items: center; gap: 8px; }
    .quick-jump input { padding: 8px 15px; border: 1px solid #cbd5e1; border-radius: 20px; width: 80px; outline: none; text-align: center; font-size: 13px; transition: border-color 0.3s; }
    .quick-jump input:focus { border-color: #3b82f6; }
    .quick-jump button { padding: 8px 15px; background: linear-gradient(90deg, #4facfe, #00f2fe); color: white; border: none; border-radius: 20px; cursor: pointer; font-weight: bold; box-shadow: 0 2px 8px rgba(0,0,0,0.1); transition: transform 0.2s; font-size: 13px; }
    .quick-jump button:hover { transform: scale(1.05); }

    /* ==================== 4. ANIMATION SECTION ==================== */
    .animation-wrapper { display: none; margin-top: 20px; background: #ffffff; border-radius: 15px; box-shadow: 0 4px 20px rgba(0,0,0,0.08); padding: 20px; }
    .animation-wrapper.show { display: block; }
    .animation-area { background: #ffffff; border-radius: 15px; width: 100%; height: 200px; overflow-y: auto; box-shadow: 0 4px 20px rgba(0,0,0,0.08); padding: 20px; }
    
    .control-buttons { display: flex; justify-content: flex-end; gap: 10px; margin-top: 15px; width: 100%; flex-wrap: wrap; }
    
    .charBox { display: inline-flex; align-items: center; width: auto; min-width: 200px; margin: 10px; padding: 10px; background: #fdfdfd; border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); text-align: left; }
    .char-info { display: flex; flex-direction: column; justify-content: center; margin-right: 15px; min-width: 80px; }
    .writer { width: 100px !important; height: 100px !important; flex-shrink: 0; margin: auto; }
    .pinyin { margin-top: 6px; font-weight: 600; } .meaningChar { font-size: 13px; color: #374151; margin-top: 4px; } .playChar { margin-top: 5px; background: #22c55e; color: white; border: none; border-radius: 10px; padding: 3px 8px; cursor: pointer; font-size: 12px; }

    /* ==================== 5. TABLE SECTION ==================== */
    .tableWrapper { width: 100%; overflow-x: auto; }
    .sentenceHeader, .sentenceRow { display: grid; grid-template-columns: 60px 160px 160px 120px 180px 240px 200px 260px 80px; padding: 10px; width: max-content; min-width: 100%; }
    .sentenceHeader { padding: 12px; font-weight: 700; text-align: center; background-color: bisque; }
    .sentenceRow { border-bottom: 1px solid #eee; cursor: pointer; transition: background-color 0.2s ease; }
    .sentenceRow:hover { background-color: #f1f5f9; } .sentenceRow.activeRow { background: #dbeafe; border-left: 6px solid #3b82f6; }
    .sentenceRow div:nth-child(2) { display: flex; align-items: center; gap: 10px; justify-content: flex-start; color: red; margin-left: 53px; }
    .playVocab { padding: 3px 6px; background: #4facfe; color: white; border: none; border-radius: 8px; cursor: pointer; font-size: 12px; } .deleteBtn { color: red; cursor: pointer; font-weight: bold; }

    /* ==================== 6. FLOATING ITEMS & ERROR MESSAGES & MAGIC HINTS ==================== */
    .fb-icon-btn { position: fixed; top: 44px; left: 20px; width: 45px; height: 45px; background: #1877f2; color: white; border-radius: 50%; font-weight: bold; font-size: 26px; display: flex; align-items: center; justify-content: center; text-decoration: none; z-index: 10000; box-shadow: 0 4px 10px rgba(0,0,0,0.3); transition: all 0.3s ease; }
    .fb-icon-btn:hover { background: #0d65d9; transform: scale(1.1); }
    .back-to-top { position: fixed; bottom: 20px; right: 20px; width: 50px; height: 50px; background: #4facfe; color: white; border: none; border-radius: 50%; font-size: 20px; cursor: pointer; display: none; z-index: 1000; box-shadow: 0 4px 8px rgba(0,0,0,0.3); transition: all 0.3s ease; }
    .back-to-top:hover { background: #00f2fe; transform: scale(1.1); }
    .pull-loader { position: fixed; top: 10px; left: 50%; transform: translateX(-50%) scale(0); width: 30px; height: 30px; border: 3px solid #ccc; border-top: 3px solid #4facfe; border-radius: 50%; z-index: 9999; opacity: 0; transition: all 0.2s ease; }
    .pull-loader.show { opacity: 1; transform: translateX(-50%) scale(1); } .pull-loader.spin { animation: spin 0.8s linear infinite; }
    @keyframes spin { from { transform: translateX(-50%) rotate(0deg); } to { transform: translateX(-50%) rotate(360deg); } }
    .responsive-message { display: none; font-size: 24px; color: #ef4444; position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; z-index: 10001; background: white; padding: 20px; border-radius: 10px; box-shadow: 0 0 10px rgba(0,0,0,0.5); }
    .error-message { display: none; position: fixed; top: 20px; right: 20px; background: #ffcccc; color: #cc0000; padding: 10px; border-radius: 5px; z-index: 10000; }
    
    /* --- CSS HIỆU ỨNG GỢI Ý VUỐT --- */
    .swipe-hint {
        display: none; 
        font-size: 13px;
        font-style: italic;
        text-align: right;
        font-weight: 800;
        background: linear-gradient(270deg, #ff007f, #7f00ff, #00d2ff, #ff007f);
        background-size: 300% 300%;
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        animation: magicShimmer 3s ease infinite;
        transition: opacity 0.6s ease-out, transform 0.6s ease-out, margin 0.6s ease-out, height 0.6s ease-out;
        transform-origin: right top;
    }
    .swipe-hint.hsk-hint { margin-bottom: 5px; text-align: center; } 
    .swipe-hint.table-hint { margin-bottom: 10px; }
    .swipe-hint i { -webkit-text-fill-color: #ff007f; display: inline-block; animation: swipeLeftRight 1.5s infinite; }
    
    @keyframes magicShimmer { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
    @keyframes swipeLeftRight { 0% { transform: translateX(0); } 50% { transform: translateX(5px); } 100% { transform: translateX(0); } }
    
    .fade-out { opacity: 0; transform: scale(0.8) translateY(-10px); margin-bottom: 0 !important; pointer-events: none; height: 0; overflow: hidden; }
    .hidden-by-js { display: none !important; }

    /* ==================== 7. RESPONSIVE ==================== */
    @media screen and (max-width: 1600px) { .top-wrapper, .animation-wrapper, .search-wrapper.fixed { width: 95%; } .sentenceHeader, .sentenceRow { grid-template-columns: 50px 140px 140px 100px 150px 200px 170px 220px 70px; } }
    @media screen and (max-width: 1200px) { .sentenceHeader, .sentenceRow { grid-template-columns: 40px 120px 120px 80px 120px 160px 140px 180px 60px; } }
    @media screen and (max-width: 768px) {
        h1.app-title { font-size: 28px; margin: 10px; }
        .fb-icon-btn { width: 38px; height: 38px; font-size: 20px; top: 10px; left: 15px; } .back-to-top { width: 40px; height: 40px; font-size: 16px; }
        
        .swipe-hint { display: block; }

        .search-wrapper { flex-direction: column; gap: 15px; padding: 15px 10px; } 
        .search-wrapper.fixed { position: static; transform: none; width: 100%; } 
        .hsk-container { width: 100%; }
        .search-box { width: 100%; text-align: center; } 

        .hsk-buttons { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 5px; scrollbar-width: none; -ms-overflow-style: none; }
        .hsk-buttons::-webkit-scrollbar { display: none; }
        .hskRow { display: flex; flex-wrap: nowrap; width: max-content; margin: 0 0 8px 0; } 
        .hskBtn { padding: 6px 12px; font-size: 13px; margin: 0 8px 0 0; border-radius: 12px; flex-shrink: 0; }

        .hide-btn { display: none !important; }
        .animation-wrapper { position: relative; top: 0; left: 0; transform: none; width: 100%; opacity: 1; pointer-events: auto; overflow-x: auto; overflow-y: hidden; white-space: nowrap; padding: 10px 0; margin-top: 10px; }
        .animation-area { display: flex; flex-wrap: nowrap; gap: 8px; padding: 0 10px; height: 135px; }
        .charBox { display: inline-flex; align-items: center; flex: 0 0 auto; width: auto; min-width: 160px; margin: 0 5px; padding: 8px 12px; text-align: left; }
        .char-info { display: flex; flex-direction: column; justify-content: center; margin-right: 10px; min-width: 50px; }
        .writer { width: 70px !important; height: 70px !important; flex-shrink: 0; }
        .pinyin { font-size: 26px; } .meaningChar { font-size: 14px; } .playChar { font-size: 10px; padding: 2px 5px; margin-top: 5px; }
        .sentence-section { margin: 10px 0; padding: 10px; } .sentenceRow { padding: 8px 5px; } .sentenceRow div:nth-child(2) { margin-left: 0; }
        .sentenceHeader, .sentenceRow { min-width: 1100px; font-size: 12px; grid-template-columns: 40px 120px 120px 80px 120px 200px 160px 200px 60px; }
    }
    
    /* ==================== 8. MINI MODE ==================== */
    .mini-toggle-btn {
        position: fixed;
        bottom: 20px;
        left: 20px; /* Đặt ở góc dưới bên trái */
        padding: 12px 24px;
        background: linear-gradient(90deg, #ff8a00, #e52e71);
        color: white;
        border: none;
        border-radius: 30px;
        font-weight: 800;
        cursor: pointer;
        z-index: 10000;
        box-shadow: 0 4px 12px rgba(0,0,0,0.3);
        transition: all 0.3s ease;
    }

    .mini-toggle-btn:hover {
        transform: scale(1.05);
    }

    /* Khi kích hoạt mini-mode: Ẩn phần tìm kiếm/HSK */
    body.mini-mode .top-wrapper {
        display: none !important;
    }

    /* Desktop: Hiển thị tối đa 2 dòng, dư thì cuộn dọc như cũ */
    body.mini-mode .animation-area {
        display: flex;
        flex-wrap: wrap; 
        max-height: 320px; /* Chiều cao vừa đủ 2 dòng charBox (140px/dòng + padding) */
        height: auto;
        overflow-y: auto;  /* Cuộn dọc nếu dư */
        overflow-x: hidden;
        align-content: flex-start;
    }

    /* Mobile: Hiển thị 2 dòng, dư thì cuộn ngang như cũ */
@media screen and (max-width: 768px) {
        body.mini-mode .animation-area {
            display: flex !important;
            flex-wrap: nowrap; /* Ép về 1 hàng duy nhất */
            overflow-x: auto;  /* Vẫn cho vuốt ngang */
            overflow-y: hidden;
            height: 300px; /* Giữ nguyên chiều cao khung như bạn muốn */
            align-items: center; /* Đẩy các thẻ ra chính giữa khung theo chiều dọc */
            padding: 10px 20px;
        }
        
        body.mini-mode .charBox {
            min-width: 240px; /* Phóng to toàn bộ thẻ chứa chữ */
            padding: 15px 20px;
            margin: 0 10px;
        }

        body.mini-mode .char-info {
            min-width: 70px;
            margin-right: 15px;
        }

        body.mini-mode .pinyin {
            font-size: 34px; /* Phóng to phiên âm pinyin */
        }

        body.mini-mode .meaningChar {
            font-size: 16px; /* Phóng to nghĩa của từ */
        }

        body.mini-mode .writer {
            width: 120px !important;  /* Phóng to khung vẽ chữ */
            height: 120px !important;
        }

        /* Giúp nét vẽ HanziWriter (bản chất là SVG) tự động phóng to theo khung chứa */
        body.mini-mode .writer svg {
            width: 100%; 
            height: 100%;
        }
    }