.merge-tool-container{padding-bottom:4rem;animation:fadeIn .5s ease-out}.merge-header{text-align:center;margin-bottom:3rem}.merge-header h1{font-size:2.5rem;font-weight:800;margin-bottom:1rem;background:linear-gradient(135deg,var(--foreground) 0%,#444 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.merge-card{background:var(--card);border:1px solid var(--border);border-radius:1.5rem;padding:2rem;box-shadow:0 4px 20px -2px #0000000d}.merge-layout{display:grid;grid-template-columns:1fr;gap:2.5rem}@media (min-width: 1024px){.merge-layout{grid-template-columns:350px 1fr}}.paste-drop-zone{border:2px dashed var(--border);border-radius:1rem;padding:2rem;text-align:center;cursor:pointer;background:#f8fafc;transition:all .2s;margin-bottom:1.5rem}.paste-drop-zone:hover,.paste-drop-zone.active{border-color:var(--primary);background:#6366f10d}.paste-drop-zone p{color:#64748b;margin-top:1rem;font-size:.95rem}.image-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:1rem;margin-bottom:2rem}.image-thumb{position:relative;aspect-ratio:1;border-radius:.5rem;overflow:hidden;border:1px solid var(--border)}.image-thumb img{width:100%;height:100%;object-fit:cover}.remove-thumb{position:absolute;top:2px;right:2px;background:#ef4444e6;color:#fff;border:none;border-radius:50%;width:20px;height:20px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:12px}.options-panel{display:flex;flex-direction:column;gap:1.5rem}.option-group{display:flex;flex-direction:column;gap:.75rem}.option-group label{font-size:.875rem;font-weight:600;color:#475569}.btn-toggle-group{display:flex;gap:.5rem;background:#f1f5f9;padding:.25rem;border-radius:.75rem}.toggle-btn{flex:1;padding:.5rem;border:none;border-radius:.5rem;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s;background:transparent;color:#64748b}.toggle-btn.active{background:#fff;color:var(--primary);box-shadow:0 2px 4px #0000000d}.select-input{width:100%;padding:.625rem;border-radius:.5rem;border:1px solid var(--border);font-size:.875rem}.select-input:focus-visible{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f126}.range-with-val{display:flex;align-items:center;gap:1rem}.range-with-val input[type=range]{flex:1}.range-val{font-size:.875rem;font-weight:600;color:var(--primary);min-width:2.5rem}.switch-group{display:flex;justify-content:space-between;align-items:center}.preview-container{background:#f1f5f9;border-radius:1rem;padding:2rem;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;position:relative;overflow:auto}.preview-canvas-wrapper{max-width:100%;max-height:700px;display:flex;align-items:center;justify-content:center}.merged-image-preview{max-width:100%;height:auto;object-fit:contain}.download-section{position:sticky;bottom:2rem;width:100%;max-width:400px;margin:2rem auto 0}.merge-download-btn{width:100%;padding:1rem;background:var(--primary);color:#fff;border:none;border-radius:99px;font-weight:600;font-size:1.125rem;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.75rem;box-shadow:0 10px 15px -3px #6366f14d;transition:all .2s}.merge-download-btn:hover{transform:translateY(-2px);box-shadow:0 20px 25px -5px #6366f166}.empty-preview{color:#94a3b8;display:flex;flex-direction:column;align-items:center;gap:1rem}.merge-clear-btn{width:100%;padding:.75rem;background:#fef2f2;color:#ef4444;border:1px solid #fecaca;border-radius:.75rem;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.5rem;transition:all .2s;margin-top:1rem}.merge-clear-btn:hover{background:#fee2e2;border-color:#fca5a5;transform:translateY(-1px)}