.writer-toolbar {
    background: #f1f5f9;
    padding: 12px;
    border-radius: 15px 15px 0 0;
    border: 1px solid #cbd5e1;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    position: sticky;
    top: 0;
    z-index: 100;
}
.writer-toolbar button, .writer-toolbar select, .toolbar-color-item {
    padding: 8px 12px;
    border: 1px solid #cbd5e1;
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}
.writer-toolbar button:hover, .toolbar-color-item:hover { background: #e0f2fe; color: #0284c7; }

.toolbar-color-item input[type='color'] {
    width: 18px;
    height: 18px;
    border: none;
    padding: 0;
    background: none;
    cursor: pointer;
}

.a4-container-wrapper {
    background: #64748b; /* Professional Dark Background for Focus */
    padding: 40px 10px;
    overflow-y: auto;
    max-height: 80vh;
    border: 1px solid #cbd5e1;
    border-top: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    scrollbar-width: thin;
}

/* Page Spacing Design */
.page-unit {
    position: relative;
    width: 210mm;
    min-height: 297mm;
    background: white;
    margin-bottom: 40px; 
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
    box-sizing: border-box;
    transition: 0.3s;
}
.page-body {
    width: 100%;
    min-height: 297mm;
    padding: 25mm 20mm;
    outline: none;
    font-family: 'SolaimanLipi', Arial, sans-serif !important;
    font-size: 18px;
    line-height: 1.6;
    color: #000;
    text-align: left;
    word-wrap: break-word;
    box-sizing: border-box;
}
  
.page-body:empty:before {
    content: attr(data-placeholder);
    color: #94a3b8;
    pointer-events: none;
    display: block; 
}

.del-page-icon {
    position: absolute;
    top: 10px;
    right: -50px; 
    background: #ef4444;
    color: #fff;
    border: none;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.add-page-btn {
    background: #0284c7;
    color: white;
    border: 2px solid rgba(255,255,255,0.2);
    padding: 12px 30px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 800;
    margin: 20px 0;
    transition: 0.3s;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}
.add-page-btn:hover { background: #0369a1; transform: translateY(-3px); }

/* --- Professional Mobile View --- */
@media (max-width: 850px) {
    .page-unit {
        width: 98%;
        margin-bottom: 20px;
        min-height: 400px;
    }
    .page-body {
        padding: 15mm 10mm;
        font-size: 16px;
    }
    .del-page-icon {
        right: 10px;
        top: 10px;
        width: 30px;
        height: 30px;
        font-size: 10px;
        opacity: 0.8;
    }
    .a4-container-wrapper { padding: 20px 5px; }
    .writer-toolbar { padding: 8px; gap: 5px; }
    .writer-toolbar button, .toolbar-color-item { padding: 6px 10px; font-size: 12px; }
    .writer-toolbar select { font-size: 12px; padding: 5px; }
}

/* Print CSS */
@media print {
    @page { size: A4; margin: 0; }
    body * { visibility: hidden; }
    #pages-list, #pages-list * { visibility: visible; }
    #pages-list { position: absolute; left: 0; top: 0; width: 100%; }
    .page-unit { box-shadow: none; margin: 0; padding: 0; page-break-after: always; }
    .del-page-icon, .add-page-btn { display: none !important; }
}