:root{--bg-primary:#0b0f19;--bg-secondary:#111827;--bg-card:#111827bf;--bg-card-border:#ffffff14;--bg-hover:#ffffff0d;--text-main:#f9fafb;--text-muted:#9ca3af;--text-sub:#6b7280;--accent-primary:#3b82f6;--accent-hover:#2563eb;--accent-glow:#3b82f64d;--accent-success:#10b981;--accent-warning:#f59e0b;--accent-danger:#ef4444;--font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--radius-xl:24px;--shadow-card:0 10px 30px -5px #0006, 0 0 1px 1px #ffffff0d}body.light-theme{--bg-primary:#f3f4f6;--bg-secondary:#fff;--bg-card:#ffffffd9;--bg-card-border:#00000014;--bg-hover:#0000000a;--text-main:#111827;--text-muted:#4b5563;--text-sub:#9ca3af;--shadow-card:0 10px 25px -5px #00000014, 0 0 1px 1px #0000000d}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-primary);color:var(--text-main);min-height:100vh;line-height:1.5;transition:background-color .3s,color .3s;overflow-x:hidden}#app{max-width:1280px;margin:0 auto;padding:20px 24px 60px}.app-header{background:var(--bg-card);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--bg-card-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);justify-content:space-between;align-items:center;margin-bottom:24px;padding:16px 24px;display:flex}.brand{align-items:center;gap:16px;display:flex}.brand-logo{color:#fff;border-radius:var(--radius-md);width:48px;height:48px;box-shadow:0 4px 14px var(--accent-glow);background:linear-gradient(135deg,#3b82f6 0%,#8b5cf6 100%);justify-content:center;align-items:center;display:flex}.brand-title{letter-spacing:-.02em;font-size:1.35rem;font-weight:700}.brand-subtitle{color:var(--text-muted);font-size:.82rem}.header-actions{align-items:center;gap:14px;display:flex}.privacy-badge{color:var(--accent-success);background:#10b9811f;border:1px solid #10b9814d;border-radius:20px;align-items:center;gap:6px;padding:6px 12px;font-size:.78rem;font-weight:600;display:flex}.icon-btn{background:var(--bg-hover);border:1px solid var(--bg-card-border);color:var(--text-main);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;transition:all .2s;display:flex}.icon-btn:hover{background:var(--accent-primary);color:#fff;transform:translateY(-1px)}.tab-nav{background:var(--bg-secondary);border-radius:var(--radius-md);border:1px solid var(--bg-card-border);gap:8px;margin-bottom:24px;padding:6px;display:flex;overflow-x:auto}.tab-btn{color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;background:0 0;border:none;align-items:center;gap:8px;padding:10px 18px;font-size:.9rem;font-weight:600;transition:all .2s;display:flex}.tab-btn:hover{color:var(--text-main);background:var(--bg-hover)}.tab-btn.active{background:var(--accent-primary);color:#fff;box-shadow:0 4px 12px var(--accent-glow)}.tab-content{animation:.25s ease-in-out fadeIn;display:none}.tab-content.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.grid-layout{grid-template-columns:1fr 1fr;gap:24px;display:grid}@media (width<=900px){.grid-layout{grid-template-columns:1fr}}.card{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--bg-card-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:24px}.card-header{border-bottom:1px solid var(--bg-card-border);justify-content:space-between;align-items:center;margin-bottom:18px;padding-bottom:14px;display:flex}.card-header h2{font-size:1.15rem;font-weight:700}.card-desc{color:var(--text-muted);margin-top:2px;font-size:.85rem}.status-tag{color:var(--accent-primary);background:#3b82f626;border:1px solid #3b82f64d;border-radius:12px;padding:4px 10px;font-size:.75rem;font-weight:600}.pulse-tag:before{content:"";background-color:var(--accent-success);width:6px;height:6px;box-shadow:0 0 8px var(--accent-success);border-radius:50%;margin-right:6px;display:inline-block}.badge{border-radius:6px;padding:3px 8px;font-size:.72rem;font-weight:600}.badge-info{color:var(--accent-primary);background:#3b82f626}.signature-component-wrapper{background:var(--bg-secondary);border:1px solid var(--bg-card-border);border-radius:var(--radius-md);margin-bottom:16px;padding:16px}.type-selector-bar{gap:8px;margin-bottom:14px;display:flex}.mode-btn{border:1px solid var(--bg-card-border);background:var(--bg-primary);color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;text-align:center;flex:1;padding:8px 12px;font-size:.85rem;font-weight:600;transition:all .2s}.mode-btn:hover{color:var(--text-main);background:var(--bg-hover)}.mode-btn-active{background:var(--accent-primary)!important;color:#fff!important;border-color:var(--accent-primary)!important}.custom-text-input{color:#111827;border:1px solid var(--bg-card-border);border-radius:var(--radius-sm);background:#fff;outline:none;width:100%;margin-bottom:14px;padding:12px 14px;font-size:1.1rem}.custom-signature-canvas{cursor:crosshair;width:100%;height:220px;margin-bottom:14px;border-radius:var(--radius-sm)!important;background:#fff!important;border:2px dashed #00000026!important}.ctrl-btn{border-radius:var(--radius-sm);cursor:pointer;border:1px solid var(--bg-card-border);background:var(--bg-hover);color:var(--text-main);margin-right:8px;padding:8px 14px;font-size:.82rem;font-weight:600;transition:all .2s}.ctrl-btn:hover{color:var(--accent-danger);background:#ef444426;border-color:#ef44444d}.primary-save-btn{color:#fff;border-radius:var(--radius-sm);cursor:pointer;background:linear-gradient(135deg,#10b981 0%,#059669 100%);border:none;width:100%;margin-top:14px;padding:12px 16px;font-size:.95rem;font-weight:700;transition:all .2s;display:block;box-shadow:0 4px 14px #10b9814d}.primary-save-btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px #10b98166}.quick-color-toolbar{background:var(--bg-secondary);border-radius:var(--radius-sm);border:1px solid var(--bg-card-border);align-items:center;gap:10px;padding:10px 14px;display:flex}.toolbar-label{color:var(--text-muted);margin-right:4px;font-size:.8rem}.color-preset-btn{cursor:pointer;border:2px solid #0000;border-radius:50%;width:24px;height:24px;transition:transform .15s}.color-preset-btn:hover{transform:scale(1.2)}.color-preset-btn.active{box-shadow:0 0 0 2px var(--accent-primary);border-color:#fff}.color-input{cursor:pointer;background:0 0;border:none;width:28px;height:28px}.preview-box{background:var(--bg-secondary);border-radius:var(--radius-md);border:1px solid var(--bg-card-border);margin-bottom:16px;padding:16px}.info-label{color:var(--text-muted);margin-bottom:8px;font-size:.8rem;font-weight:600;display:block}.preview-canvas-wrapper{border-radius:var(--radius-sm);background:#fff;border:1px solid #0000001a;justify-content:center;align-items:center;min-height:120px;padding:12px;display:flex}.placeholder-text{color:#6b7280;text-align:center;font-size:.82rem}.hidden-preview{object-fit:contain;max-width:100%;max-height:100px;display:none}.metadata-grid{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px;display:grid}.meta-item{background:var(--bg-secondary);border-radius:var(--radius-sm);border:1px solid var(--bg-card-border);padding:10px 12px}.meta-title{color:var(--text-sub);margin-bottom:2px;font-size:.72rem;display:block}.meta-value{color:var(--text-main);word-break:break-all;font-size:.85rem;font-weight:600}.hash-code{color:var(--accent-primary);font-family:monospace;font-size:.75rem}.action-buttons-group{flex-direction:column;gap:10px;display:flex}.button-row{gap:10px;display:flex}.button-row button{flex:1}.primary-btn,.secondary-btn,.primary-btn-accent,.danger-btn,.text-btn{border-radius:var(--radius-sm);cursor:pointer;border:none;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-size:.85rem;font-weight:600;transition:all .2s;display:inline-flex}.primary-btn{background:var(--accent-primary);color:#fff}.primary-btn:hover:not(:disabled){background:var(--accent-hover)}.secondary-btn{background:var(--bg-hover);border:1px solid var(--bg-card-border);color:var(--text-main)}.secondary-btn:hover:not(:disabled){background:var(--bg-secondary);border-color:var(--accent-primary)}.secondary-btn:disabled,.primary-btn:disabled,.primary-btn-accent:disabled{opacity:.4;cursor:not-allowed}.primary-btn-accent{color:#fff;background:linear-gradient(135deg,#8b5cf6 0%,#6d28d9 100%)}.primary-btn-accent:hover:not(:disabled){opacity:.95}.danger-btn{color:var(--accent-danger);background:#ef444426;border:1px solid #ef44444d}.danger-btn:hover{background:var(--accent-danger);color:#fff}.text-btn{color:var(--accent-primary);background:0 0}.text-btn:hover{text-decoration:underline}.file-dropzone{border:2px dashed var(--accent-primary);border-radius:var(--radius-md);text-align:center;cursor:pointer;background:#3b82f60a;margin-bottom:20px;padding:24px;transition:all .2s}.file-dropzone:hover{border-color:var(--accent-hover);background:#3b82f614}.file-dropzone p{color:var(--text-main);margin-top:8px;font-size:.9rem;font-weight:600}.drop-subtext{color:var(--text-muted);margin-top:4px;font-size:.75rem;display:block}.hidden-file-input{display:none}.controls-form-group{flex-direction:column;gap:16px;display:flex}.slider-group{flex-direction:column;gap:6px;display:flex}.slider-header{justify-content:space-between;align-items:center;font-size:.82rem;font-weight:600;display:flex}.slider-val{color:var(--accent-primary);font-family:monospace}.range-slider{width:100%;accent-color:var(--accent-primary);cursor:pointer}.slider-hint{color:var(--text-sub);font-size:.72rem}.comparison-grid{grid-template-columns:1fr 1fr;gap:16px;margin-bottom:20px;display:grid}@media (width<=600px){.comparison-grid{grid-template-columns:1fr}}.comp-box{flex-direction:column;gap:8px;display:flex}.comp-label{color:var(--text-muted);font-size:.78rem;font-weight:600}.comp-canvas-container{border:1px solid var(--bg-card-border);border-radius:var(--radius-sm);background:#fff;justify-content:center;align-items:center;min-height:180px;padding:10px;display:flex;position:relative;overflow:hidden}.comp-canvas-container.checkerboard{background-color:#fff;background-image:linear-gradient(45deg,#e5e7eb 25%,#0000 25%),linear-gradient(-45deg,#e5e7eb 25%,#0000 25%),linear-gradient(45deg,#0000 75%,#e5e7eb 75%),linear-gradient(-45deg,#0000 75%,#e5e7eb 75%);background-position:0 0,0 8px,8px -8px,-8px 0;background-size:16px 16px}.comp-canvas-container canvas{object-fit:contain;max-width:100%;max-height:160px}.doc-signer-card{overflow:hidden}.doc-controls{gap:12px;display:flex}.form-select,.form-input{background:var(--bg-secondary);color:var(--text-main);border:1px solid var(--bg-card-border);border-radius:var(--radius-sm);outline:none;padding:8px 12px;font-size:.85rem}.document-paper-container{color:#1f2937;border-radius:var(--radius-sm);background:#fff;min-height:520px;margin-top:10px;padding:40px;position:relative;box-shadow:0 4px 20px #00000026}.document-header-stamp{border-bottom:2px solid #e5e7eb;justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:14px;display:flex}.stamp-badge{color:#dc2626;letter-spacing:.05em;border:2px solid #dc2626;border-radius:4px;padding:2px 8px;font-size:.72rem;font-weight:700}.doc-meta-right{color:#6b7280;font-family:monospace;font-size:.78rem}.doc-body-content{margin-bottom:40px;font-size:.92rem;line-height:1.7}.doc-body-content h3{color:#111827;margin-bottom:12px;font-size:1.25rem}.doc-body-content p{margin-bottom:14px}.document-signatures-area{border-top:1px dashed #d1d5db;justify-content:space-between;margin-top:40px;padding-top:20px;display:flex}.sig-box-left,.sig-box-right{width:45%}.sig-role{color:#4b5563;margin-bottom:10px;font-size:.8rem;font-weight:600}.signer-name{color:#111827;margin-top:10px;font-size:.85rem;font-weight:700}.dummy-signature{flex-direction:column;justify-content:center;min-height:80px;display:flex}.digital-stamp-approved{color:#059669;background:#0596691a;border-radius:4px;padding:4px 10px;font-size:.75rem;font-weight:700;display:inline-block}.placed-sig-container{border-radius:var(--radius-sm);background:#f9fafb;border:2px dashed #9ca3af;justify-content:center;align-items:center;min-height:100px;padding:10px;display:flex;position:relative}.sig-placeholder{color:#6b7280;flex-direction:column;align-items:center;gap:6px;font-size:.78rem;display:flex}.placed-sig-wrapper{flex-direction:column;align-items:center;display:flex;position:relative}.placed-sig-wrapper img{max-width:100%;max-height:75px}.placed-sig-stamp{color:#2563eb;text-align:center;margin-top:4px;font-size:.65rem;font-weight:600}.signer-name-field{text-align:center;color:#374151;margin-top:6px;font-size:.85rem}.gallery-toolbar{gap:12px;display:flex}.gallery-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;margin-top:16px;display:grid}.gallery-item-card{background:var(--bg-secondary);border:1px solid var(--bg-card-border);border-radius:var(--radius-md);flex-direction:column;justify-content:space-between;padding:14px;display:flex}.gallery-img-container{border-radius:var(--radius-sm);background-color:#fff;background-image:linear-gradient(45deg,#e5e7eb 25%,#0000 25%),linear-gradient(-45deg,#e5e7eb 25%,#0000 25%),linear-gradient(45deg,#0000 75%,#e5e7eb 75%),linear-gradient(-45deg,#0000 75%,#e5e7eb 75%);background-size:12px 12px;justify-content:center;align-items:center;min-height:100px;margin-bottom:12px;padding:12px;display:flex}.gallery-img-container img{max-width:100%;max-height:80px}.gallery-meta{color:var(--text-muted);margin-bottom:12px;font-size:.75rem}.gallery-actions{gap:6px;display:flex}.empty-gallery{text-align:center;color:var(--text-muted);grid-column:1/-1;padding:40px;font-size:.9rem}.config-form{flex-direction:column;gap:16px;display:flex}.form-group-toggle{justify-content:space-between;align-items:center;font-size:.88rem;display:flex}.form-group{flex-direction:column;gap:6px;font-size:.85rem;display:flex}.logs-console{background:var(--bg-secondary);border:1px solid var(--bg-card-border);border-radius:var(--radius-sm);height:340px;padding:12px;font-family:monospace;font-size:.78rem;overflow-y:auto}.log-entry{margin-bottom:8px;line-height:1.4}.log-time{color:var(--text-sub);margin-right:6px}.log-system{color:#60a5fa}.log-event{color:#34d399}.log-error{color:#f87171}.toast-container{z-index:9999;flex-direction:column;gap:10px;display:flex;position:fixed;bottom:24px;right:24px}.toast{background:var(--bg-secondary);color:var(--text-main);border:1px solid var(--accent-primary);border-radius:var(--radius-sm);padding:12px 18px;font-size:.85rem;font-weight:600;animation:.2s cubic-bezier(.1,.9,.2,1) slideIn;box-shadow:0 10px 25px #0000004d}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}