.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}.merge-page{min-height:100vh;display:flex;flex-direction:column;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed}.merge-header{background:hsla(0,0%,100%,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,0,0,.1);padding:2rem 0;box-shadow:0 1px 3px rgba(0,0,0,.1)}.back-link{display:inline-flex;align-items:center;color:#667eea;font-weight:600;margin-bottom:1rem;transition:all .2s;text-decoration:none}.back-link:hover{color:#764ba2;transform:translateX(-4px)}.merge-title{font-size:2.75rem;font-weight:800;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem}.merge-subtitle{color:#64748b;font-size:1.125rem}.merge-main{flex:1 1;padding:3rem 0}.merge-container{max-width:1000px;margin:0 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1.5rem;border-radius:.75rem;margin-bottom:1.5rem;font-weight:500}.files-section{background:hsla(0,0%,100%,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid hsla(0,0%,100%,.2);border-radius:1.5rem;padding:2.5rem;box-shadow:0 8px 16px rgba(0,0,0,.1)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.section-title{font-size:1.75rem;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.add-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:.625rem 1.25rem;border-radius:.75rem;font-weight:600;transition:all .3s;box-shadow:0 4px 6px rgba(102,126,234,.3)}.add-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 12px rgba(102,126,234,.4)}.add-button:disabled{opacity:.5;cursor:not-allowed}.files-list{flex-direction:column;margin-bottom:2rem}.file-item,.files-list{display:flex;gap:1.5rem}.file-item{align-items:center;padding:1.5rem;background:#f8fafc;border:2px solid #e2e8f0;border-radius:1rem;transition:all .3s;cursor:move;position:relative}.file-item:hover{border-color:#667eea;box-shadow:0 4px 12px rgba(102,126,234,.15);transform:translateY(-2px)}.file-item.dragging{opacity:.5;border-style:dashed}.file-item.drag-over{border-color:#667eea;background:rgba(102,126,234,.1);transform:scale(1.02)}.file-preview-container{display:flex;flex-direction:column;gap:.5rem;flex-shrink:0}.file-preview{width:120px;height:160px;border-radius:.5rem;overflow:hidden;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.1);border:1px solid #e2e8f0}.pdf-preview{width:100%;height:100%;border:none;pointer-events:none}.pdf-preview-fallback{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#94a3b8;font-size:.875rem;background:#f1f5f9}.pdf-icon{font-size:2rem;margin-bottom:.5rem}.preview-button{background:#667eea;color:#fff;border:none;padding:.375rem .75rem;border-radius:.5rem;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s;width:100%}.preview-button:hover:not(:disabled){background:#5568d3;transform:translateY(-1px)}.preview-button:disabled{opacity:.5;cursor:not-allowed}.file-info{flex:1 1;min-width:0}.file-name{font-weight:600;color:#1e293b;margin-bottom:.5rem;word-break:break-word;font-size:1.125rem}.file-details{font-size:.9375rem;color:#64748b;margin-bottom:.5rem}.drag-hint{font-size:.75rem;color:#94a3b8;font-style:italic}.remove-button{background:#ef4444;color:#fff;border:none;width:2.5rem;height:2.5rem;border-radius:.5rem;font-size:1.25rem;cursor:pointer;transition:all .2s;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-weight:600}.remove-button:hover:not(:disabled){background:#dc2626;transform:scale(1.1)}.remove-button:disabled{opacity:.5;cursor:not-allowed}.progress-section{margin-bottom:2rem}.progress-root{position:relative;overflow:hidden;background:#e2e8f0;border-radius:9999px;width:100%;height:.75rem;margin-bottom:.5rem}.progress-indicator{background:linear-gradient(90deg,#667eea,#764ba2);height:100%;border-radius:9999px;transition:width .3s ease}.progress-text{text-align:center;color:#64748b;font-size:.9375rem;font-weight:500}.merge-button{width:100%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:1.25rem;border-radius:.75rem;font-size:1.25rem;font-weight:700;transition:all .3s;box-shadow:0 4px 6px rgba(102,126,234,.3)}.merge-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 16px rgba(102,126,234,.4)}.merge-button:disabled{opacity:.5;cursor:not-allowed}.pdf-viewer-dialog{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#fff;border-radius:1rem;padding:0;box-shadow:0 25px 50px -12px rgba(0,0,0,.25);z-index:51;width:90vw;max-width:900px;height:85vh;max-height:800px;display:flex;flex-direction:column;animation:contentShow .15s cubic-bezier(.16,1,.3,1)}.pdf-viewer-title{padding:1.5rem;font-size:1.25rem;font-weight:700;color:#1e293b;border-bottom:1px solid #e2e8f0;margin:0}.pdf-viewer-container{flex:1 1;overflow:hidden;padding:1.5rem;background:#f8fafc}.pdf-viewer-iframe{width:100%;height:100%;border:none;border-radius:.5rem;background:#fff;box-shadow:0 4px 6px rgba(0,0,0,.1)}.dialog-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:50;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.dialog-content{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#fff;border-radius:1rem;padding:2rem;box-shadow:0 25px 50px -12px rgba(0,0,0,.25);z-index:51;width:90vw;max-width:400px;animation:contentShow .15s cubic-bezier(.16,1,.3,1)}.dialog-title{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem}.dialog-description{color:#64748b;line-height:1.6}.dialog-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:.625rem 1.5rem;border-radius:.5rem;font-weight:600;transition:all .2s}.dialog-button:hover{transform:translateY(-1px);box-shadow:0 4px 6px rgba(102,126,234,.3)}@media (max-width:768px){.merge-title{font-size:2rem}.files-section{padding:1.5rem}.file-item{flex-direction:column;align-items:flex-start}.file-preview-container{width:100%}.file-preview{width:100%;height:200px}.section-header{flex-direction:column;align-items:flex-start;gap:1rem}.add-button{width:100%}.pdf-viewer-dialog{width:95vw;height:90vh;max-height:none}}