:root{--primary:#4f46e5;--primary-hover:#4338ca;--secondary:#e0e7f5;--text:#111827;--text-light:#6b7280;--border:#bdc9e1;--bg-light:#f9fafb;--error:#ef4444;--success:#10b981;--warning:#f59e0b;--card-shadow:0 4px 6px #0000000d;--page-shadow:0 2px 4px #0000001a}
.containert{max-width:94%;margin:100px auto;background:#fff;border-radius:12px;box-shadow:var(--card-shadow);overflow:hidden}
.main-content{padding:6px}
.upload-section{text-align:center;padding:48px;border:2px dashed var(--border);border-radius:12px;background-color:var(--bg-light);transition:all .3s ease;margin-bottom:24px;position:relative}
.upload-section.active{border-color:var(--primary);background-color:#4f46e50d}
.upload-icon{font-size:56px;color:var(--primary);margin-bottom:20px}
.upload-text{font-size:18px;color:var(--text);margin-bottom:12px;font-weight:500}
.upload-hint{font-size:14px;color:var(--text-light);margin-bottom:24px}
.main-content .btn-upload{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s ease;background-color:var(--primary);color:#fff;border:none;outline:none;font-size:15px;gap:10px}
.main-content .btn-upload:hover{background-color:var(--primary-hover)}
#pdf-upload{display:none}
.pages-container{display:none;margin-bottom:24px}
.pages-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-top:16px}
.page-card{background:#fff;border-radius:8px;box-shadow:var(--page-shadow);overflow:hidden;transition:all .2s;border:1px solid var(--border);position:relative}
.page-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}
.page-card.selected{border:2px solid var(--primary)}
.page-card.dragging{opacity:.5;border:2px dashed var(--primary)}
.page-number{position:absolute;top:8px;left:8px;background-color:var(--primary);color:#fff;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;z-index:2}
.page-canvas{width:100%;height:auto;display:block;background-color:var(--bg-light)}
.page-actions{display:flex;justify-content:space-between;padding:8px;background-color:#fff;border-top:1px solid var(--border)}
.page-btn{background:none;border:none;cursor:pointer;color:var(--text-light);transition:color .2s;padding:4px}
.page-btn:hover{color:var(--primary)}
.toolbar{display:none;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:12px}
.toolbar-group{display:flex;gap:8px;flex-wrap:wrap}
.btn-toolbar{display:inline-flex;align-items:center;justify-content:center;padding:8px 16px;border-radius:6px;font-weight:500;cursor:pointer;transition:all .2s ease;border:none;outline:none;font-size:14px;gap:6px;background-color:var(--secondary);color:var(--text)}
.btn-toolbar:hover{background-color:#e5e7eb}
.btn-toolbar.primary{background-color:var(--primary);color:#fff}
.btn-toolbar.primary:hover{background-color:var(--primary-hover)}
.btn-toolbar.danger{background-color:var(--error);color:#fff}
.btn-toolbar.danger:hover{background-color:#dc2626}
.action-buttons{display:none;justify-content:center;gap:16px;margin-top:24px;flex-wrap:wrap}
.btn-primary{background-color:var(--primary);color:#fff}
.btn-primary:hover{background-color:var(--primary-hover)}
.btn-secondary{background-color:#495057;color:#fff}
.btn-secondary:hover{background-color:#e5e7eb}
.loading{display:none;margin:20px 0;text-align:center;color:var(--primary)}
.loading i{animation:spin 1s linear infinite}
@keyframes spin {
0%{transform:rotate(0deg)}
100%{transform:rotate(360deg)}
}
@keyframes fadeIn {
from{opacity:0;transform:translateY(10px)}
to{opacity:1;transform:translateY(0)}
}
@media (max-width: 768px) {
.pages-list{grid-template-columns:1fr 1fr}
.toolbar{flex-direction:column}
.toolbar-group{justify-content:center}
.action-buttons{flex-direction:column;gap:12px}
.btn{width:100%}
}
.dropzone{border:2px dashed var(--primary);background-color:#4f46e50d;border-radius:8px;min-height:20px;margin:4px 0}
.selection-counter{background-color:#85a417;color:#fff;padding:4px 16px;border-radius:5px;font-size:14px;margin-left:8px;line-height: 24px;}
#downloadBtn{display:none}
#extractBtn{background:#44CF8E;color:#fff;}