/* 6 TABS TRÊN GÁY SỔ - TÊN ANH CHÍNH, TIẾNG VIỆT PHỤ ĐỀ */
    .journal-tabs {
      display: flex;
      gap: 4px;
      margin-left: 0;
      position: relative;
      z-index: 5;
      margin-bottom: -1px;
      flex-wrap: nowrap;
      overflow-x: auto;
      overflow-y: hidden;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }
    .journal-tabs::-webkit-scrollbar { display: none; }

    .j-tab {
      background: linear-gradient(180deg, #241c15 0%, #17120e 100%);
      border: 1px solid #483928;
      border-bottom: none;
      padding: 6px 10px 7px;
      border-radius: 8px 8px 0 0;
      color: #9c8975;
      cursor: pointer;
      transition: all 0.15s ease-out;
      position: relative;
      display: flex;
      align-items: center;
      gap: 6px;
      flex: 0 0 auto;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 -2px 6px rgba(0,0,0,0.5);
      user-select: none;
    }

    .j-tab:hover {
      background: linear-gradient(180deg, #33271d 0%, #1e1711 100%);
      color: #ded1c1;
      border-color: #665039;
      transform: translateY(-2px);
    }

    .j-tab.active {
      background: linear-gradient(180deg, #ebd8b6 0%, var(--paper-bg) 100%);
      border-color: #7d6545;
      border-bottom: 1px solid var(--paper-bg);
      color: #1b1915;
      padding-top: 7px;
      padding-bottom: 8px;
      margin-top: -2px;
      box-shadow: 0 -4px 10px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.6);
      z-index: 6;
    }

    .j-tab-badge {
      font-family: var(--font-hand);
      font-size: 0.92rem;
      font-weight: 700;
      color: #78644e;
      border: 1px solid #4a3a29;
      border-radius: 5px;
      padding: 1px 4px;
      line-height: 1;
      min-width: 20px;
      text-align: center;
    }

    .j-tab.active .j-tab-badge {
      color: #8f1d1d;
      border-color: #a82424;
      background: rgba(143, 29, 29, 0.08);
    }

    .j-tab-content {
      display: flex;
      flex-direction: column;
      line-height: 1.1;
    }

    .j-tab-title {
      font-size: 0.76rem;
      letter-spacing: 0.05em;
      font-weight: 700;
      color: inherit;
      white-space: nowrap;
    }

    .j-tab-sub {
      font-size: 0.66rem;
      color: #7a6a57;
      margin-top: 1px;
      white-space: nowrap;
    }

    .j-tab.active .j-tab-sub {
      color: #5a4b37;
      font-weight: 600;
    }

    /* TAB 08: MANUAL — badge màu đất riêng, viền giữ nguyên để không hở dash cạnh mép sổ */
    .j-tab-manual .j-tab-badge {
      color: #9f6b2a;
      border-color: #6b4a1d;
      background: rgba(159, 107, 42, 0.08);
    }
    .j-tab-manual.active .j-tab-badge {
      color: #8a5a12;
      border-color: #b58a3c;
      background: rgba(176, 128, 45, 0.14);
    }

    /* THE BOOK */
    .book {
      background: #211913;
      border: 6px solid #140f0c;
      border-radius: 12px;
      box-shadow: 
        0 18px 45px rgba(0,0,0,0.9),
        0 0 0 1px rgba(255,255,255,0.05);
      display: flex;
      min-height: 650px;
      position: relative;
      overflow: hidden;
    }

    .book::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      border-radius: 8px;
      box-shadow: inset 0 0 25px rgba(0,0,0,0.8);
      pointer-events: none;
      z-index: 10;
    }

    .page {
      flex: 1;
      background-color: var(--paper-bg);
      background-image: 
        radial-gradient(ellipse at center, var(--paper-texture) 0%, var(--paper-bg) 85%),
        repeating-linear-gradient(transparent, transparent 27px, var(--paper-line) 28px);
      padding: 24px 30px 40px;
      position: relative;
      display: flex;
      flex-direction: column;
      box-shadow: inset 0 0 60px rgba(130, 100, 60, 0.18);
    }

    .page.left-page {
      border-right: 1px solid rgba(0, 0, 0, 0.22);
      box-shadow: 
        inset -15px 0 25px rgba(0,0,0,0.2),
        inset 0 0 50px rgba(130, 100, 60, 0.15);
    }

    .page.right-page {
      border-left: 1px solid rgba(255, 255, 255, 0.12);
      box-shadow: 
        inset 15px 0 25px rgba(0,0,0,0.2),
        inset 0 0 50px rgba(130, 100, 60, 0.15);
    }