*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg-deepest: #0a0a14;--bg-deep: #0f0f1e;--bg-surface: #161628;--bg-card: rgba(22, 22, 40, .65);--bg-glass: rgba(30, 30, 55, .45);--border-glass: rgba(99, 102, 241, .15);--border-subtle: rgba(255, 255, 255, .06);--text-primary: #e8e8f0;--text-secondary: #9d9db8;--text-muted: #6b6b8a;--accent-1: #6366f1;--accent-2: #a78bfa;--accent-3: #818cf8;--gradient-primary: linear-gradient(135deg, #6366f1 0%, #a78bfa 100%);--gradient-glow: linear-gradient(135deg, rgba(99, 102, 241, .25) 0%, rgba(167, 139, 250, .15) 100%);--success: #34d399;--danger: #f87171;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 20px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 40px rgba(0, 0, 0, .5);--shadow-glow: 0 0 30px rgba(99, 102, 241, .15);--font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--transition: .2s cubic-bezier(.4, 0, .2, 1)}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-body);background:var(--bg-deepest);color:var(--text-primary);min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}body:before{content:"";position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 30% 20%,rgba(99,102,241,.08) 0%,transparent 50%),radial-gradient(ellipse at 70% 80%,rgba(167,139,250,.06) 0%,transparent 50%);pointer-events:none;z-index:0}#app{position:relative;z-index:1}#app-header{position:sticky;top:0;z-index:100;background:#0a0a14cc;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-subtle)}.header-inner{max-width:1400px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:64px}.logo{display:flex;align-items:center;gap:10px}.logo-icon{width:32px;height:32px;color:var(--accent-3)}.logo-text{font-size:1.25rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em}.header-steps{display:flex;gap:8px}.header-steps .step{display:flex;align-items:center;gap:6px;padding:6px 16px;border-radius:100px;font-size:.8rem;font-weight:500;color:var(--text-muted);transition:var(--transition)}.header-steps .step.active{background:var(--gradient-glow);color:var(--text-primary);border:1px solid var(--border-glass)}.header-steps .step.completed{color:var(--success)}.step-num{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;font-size:.7rem;font-weight:600;background:#ffffff0f}.step.active .step-num{background:var(--gradient-primary);color:#fff}.step.completed .step-num{background:var(--success);color:var(--bg-deepest)}.header-badge{display:flex;align-items:center;gap:6px;padding:4px 12px;border-radius:100px;background:#34d3991a;border:1px solid rgba(52,211,153,.2);font-size:.7rem;font-weight:500;color:var(--success)}.section{display:none;min-height:calc(100vh - 64px)}.section.active{display:flex}#upload-section{align-items:center;justify-content:center;flex-direction:column;padding:40px 24px}.upload-container{width:100%;max-width:640px;display:flex;flex-direction:column;align-items:center;gap:32px}.upload-hero{text-align:center}.upload-hero h1{font-size:2.5rem;font-weight:700;letter-spacing:-.03em;line-height:1.2;margin-bottom:12px}.gradient-text{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subtitle{color:var(--text-secondary);font-size:1.05rem;line-height:1.6;max-width:480px;margin:0 auto}.upload-zone{width:100%;border:2px dashed var(--border-glass);border-radius:var(--radius-xl);background:var(--bg-glass);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}.upload-zone:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--gradient-glow);opacity:0;transition:opacity .3s}.upload-zone:hover,.upload-zone.drag-over{border-color:var(--accent-1);box-shadow:var(--shadow-glow)}.upload-zone:hover:before,.upload-zone.drag-over:before{opacity:1}.upload-zone-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:12px;padding:48px 32px}.upload-icon-wrap{animation:float 3s ease-in-out infinite}.upload-icon{width:64px;height:64px;color:var(--accent-3)}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.upload-text{font-size:1.1rem;font-weight:500}.upload-subtext{color:var(--text-muted);font-size:.85rem}.upload-formats{display:flex;gap:8px;margin-top:8px}.format-badge{padding:4px 10px;border-radius:6px;background:#6366f11a;border:1px solid rgba(99,102,241,.2);font-size:.7rem;font-weight:600;color:var(--accent-3);letter-spacing:.05em}.upload-file-info{width:100%;animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.file-info-card{display:flex;align-items:center;gap:12px;padding:16px 20px;background:var(--bg-glass);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border-glass);border-radius:var(--radius-md);margin-bottom:16px}.file-icon{width:36px;height:36px;color:var(--accent-3);flex-shrink:0}.file-details{flex:1;display:flex;flex-direction:column;gap:2px}.file-name{font-weight:600;font-size:.95rem}.file-size{font-size:.8rem;color:var(--text-muted)}.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;background:var(--gradient-primary);color:#fff;font-family:var(--font-body);font-size:.9rem;font-weight:600;border:none;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}.btn-primary:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:#fff0;transition:var(--transition)}.btn-primary:hover:after{background:#ffffff1a}.btn-primary:active{transform:scale(.97)}.btn-primary.btn-lg{padding:14px 32px;font-size:1rem}.btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;background:var(--bg-glass);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:var(--text-primary);font-family:var(--font-body);font-size:.9rem;font-weight:500;border:1px solid var(--border-glass);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition)}.btn-secondary:hover{background:#6366f11a;border-color:var(--accent-1)}.btn-icon{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:var(--transition)}.btn-icon:hover{background:#ffffff0f;color:var(--text-primary)}.btn-icon svg{width:18px;height:18px}.btn-sm{padding:6px 14px;font-size:.8rem;font-weight:500;font-family:var(--font-body);background:var(--bg-glass);border:1px solid var(--border-glass);color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition)}.btn-sm:hover{background:#6366f11a;border-color:var(--accent-1);color:var(--text-primary)}#sign-section{flex-direction:column}.sign-layout{display:flex;flex-direction:column;height:calc(100vh - 64px)}.sign-toolbar{display:flex;align-items:center;gap:6px;padding:10px 20px;background:#0a0a14d9;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid var(--border-subtle);flex-shrink:0}.btn-tool{display:flex;align-items:center;gap:6px;padding:8px 14px;background:transparent;border:1px solid transparent;border-radius:var(--radius-sm);color:var(--text-secondary);font-family:var(--font-body);font-size:.8rem;font-weight:500;cursor:pointer;transition:var(--transition)}.btn-tool svg{width:18px;height:18px}.btn-tool:hover{background:#6366f114;color:var(--text-primary)}.btn-tool.active{background:#6366f11f;border-color:var(--border-glass);color:var(--accent-3)}.toolbar-divider{width:1px;height:24px;background:var(--border-subtle);margin:0 4px}.toolbar-spacer{flex:1}.tool-ready-dot{width:7px;height:7px;border-radius:50%;background:var(--success);display:inline-block;margin-left:2px;animation:fadeIn .3s ease}.sign-content{flex:1;display:flex;overflow:hidden}.page-nav{width:160px;background:var(--bg-deep);border-right:1px solid var(--border-subtle);overflow-y:auto;padding:12px 8px;flex-shrink:0}.page-nav::-webkit-scrollbar{width:4px}.page-nav::-webkit-scrollbar-thumb{background:var(--border-glass);border-radius:4px}.page-thumbnails{display:flex;flex-direction:column;gap:8px}.thumb-wrap{cursor:pointer;border-radius:var(--radius-sm);overflow:hidden;border:2px solid transparent;transition:var(--transition);position:relative}.thumb-wrap:hover{border-color:#6366f14d}.thumb-wrap.active{border-color:var(--accent-1);box-shadow:var(--shadow-glow)}.thumb-wrap canvas,.thumb-wrap img{width:100%;display:block;border-radius:4px}.thumb-label{position:absolute;bottom:4px;left:50%;transform:translate(-50%);font-size:.65rem;font-weight:600;background:#000000b3;padding:1px 6px;border-radius:4px;color:var(--text-secondary)}.document-viewer{flex:1;overflow:auto;padding:24px;display:flex;justify-content:center;background:var(--bg-deepest)}.document-viewer::-webkit-scrollbar{width:8px}.document-viewer::-webkit-scrollbar-thumb{background:#6366f133;border-radius:4px}.page-container{display:flex;flex-direction:column;align-items:center;gap:24px}.page-wrapper{position:relative;background:#fff;box-shadow:var(--shadow-lg);border-radius:4px}.page-wrapper canvas,.page-wrapper img{display:block;max-width:100%}.sig-overlay{position:absolute;cursor:grab;-webkit-user-select:none;user-select:none;border:2px dashed transparent;padding:2px;transition:border-color .15s;z-index:10}.sig-overlay:hover,.sig-overlay.selected{border-color:var(--accent-1)}.sig-overlay img{max-height:100%;max-width:100%;pointer-events:none}.sig-overlay .sig-delete{position:absolute;top:-12px;right:-12px;width:24px;height:24px;border-radius:50%;background:var(--danger);border:2px solid white;color:#fff;display:none;align-items:center;justify-content:center;cursor:pointer;font-size:12px;line-height:1;z-index:11}.sig-overlay:hover .sig-delete,.sig-overlay.selected .sig-delete{display:flex}.sig-overlay .sig-resize{position:absolute;bottom:-6px;right:-6px;width:12px;height:12px;background:var(--accent-1);border:2px solid white;border-radius:2px;cursor:nwse-resize;display:none;z-index:11}.sig-overlay:hover .sig-resize,.sig-overlay.selected .sig-resize{display:block}@media (hover: none),(pointer: coarse){.sig-overlay .sig-delete{display:flex;width:28px;height:28px;top:-14px;right:-14px;font-size:14px}.sig-overlay .sig-resize{display:block;width:24px;height:24px;bottom:-10px;right:-10px;border-radius:4px}}.date-overlay-text{font-family:var(--font-body);font-size:14px;font-weight:500;color:#1a1a2e;white-space:nowrap;padding:2px 4px}#download-section{align-items:center;justify-content:center;flex-direction:column}.download-container{text-align:center;max-width:520px;padding:40px 24px}.success-icon-wrap{margin-bottom:24px;animation:scaleIn .5s cubic-bezier(.34,1.56,.64,1)}@keyframes scaleIn{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}.success-icon{width:80px;height:80px}.download-container h2{font-size:2rem;font-weight:700;margin-bottom:8px;letter-spacing:-.02em}.download-subtitle{color:var(--text-secondary);margin-bottom:32px}.download-actions{display:flex;flex-direction:column;align-items:center;gap:12px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:200;display:flex;align-items:center;justify-content:center;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{width:90%;max-width:620px;background:var(--bg-surface);border:1px solid var(--border-glass);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);animation:modalSlide .3s cubic-bezier(.34,1.56,.64,1);overflow:hidden}@keyframes modalSlide{0%{transform:translateY(20px) scale(.97);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border-subtle)}.modal-header h3{font-size:1.1rem;font-weight:600}.modal-tabs{display:flex;padding:0 24px;border-bottom:1px solid var(--border-subtle)}.tab{padding:12px 20px;background:transparent;border:none;border-bottom:2px solid transparent;color:var(--text-muted);font-family:var(--font-body);font-size:.85rem;font-weight:500;cursor:pointer;transition:var(--transition)}.tab:hover{color:var(--text-primary)}.tab.active{color:var(--accent-3);border-bottom-color:var(--accent-1)}.modal-body{padding:20px 24px}.tab-content{display:none}.tab-content.active{display:block}.sig-input{width:100%;padding:12px 16px;background:var(--bg-deep);border:1px solid var(--border-glass);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-body);font-size:1rem;outline:none;transition:var(--transition);margin-bottom:16px}.sig-input:focus{border-color:var(--accent-1);box-shadow:0 0 0 3px #6366f126}.sig-input::placeholder{color:var(--text-muted)}.font-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.font-option{padding:14px 12px;background:var(--bg-deep);border:2px solid var(--border-subtle);border-radius:var(--radius-sm);text-align:center;cursor:pointer;transition:var(--transition);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.font-option:hover{border-color:#6366f14d}.font-option.selected{border-color:var(--accent-1);background:#6366f114;box-shadow:0 0 0 2px #6366f126}.font-option .font-preview{font-size:1.5rem;color:#1a1a2e;margin-bottom:4px;min-height:36px;display:flex;align-items:center;justify-content:center;background:#fff;border-radius:4px;padding:6px}.font-option .font-name{font-size:.65rem;color:var(--text-muted);font-family:var(--font-body)}.draw-controls{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.color-options{display:flex;gap:8px}.color-btn{width:28px;height:28px;border-radius:50%;border:2px solid var(--border-subtle);cursor:pointer;transition:var(--transition)}.color-btn:hover{transform:scale(1.1)}.color-btn.active{border-color:var(--accent-1);box-shadow:0 0 0 2px #6366f14d}.draw-actions{display:flex;gap:6px}#draw-canvas{width:100%;height:200px;background:#fff;border-radius:var(--radius-sm);cursor:crosshair;touch-action:none}.modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:16px 24px;border-top:1px solid var(--border-subtle)}.loading-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:300;display:flex;align-items:center;justify-content:center}.loading-spinner{text-align:center}.spinner{width:48px;height:48px;border:3px solid var(--border-glass);border-top-color:var(--accent-1);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 16px}@keyframes spin{to{transform:rotate(360deg)}}#loading-text{color:var(--text-secondary);font-size:.9rem}@media (max-width: 768px){.header-inner{flex-wrap:wrap;height:auto;padding:10px 12px;gap:6px}.logo{order:1}.lang-selector{order:2;margin-left:auto;font-size:.7rem;padding:4px 22px 4px 8px}.header-badge{display:none}.header-steps{order:3;width:100%;justify-content:center;gap:4px}.header-steps .step{padding:4px 10px;font-size:.7rem;gap:4px}.step-num{width:16px;height:16px;font-size:.6rem}#upload-section{padding:20px 12px}.upload-container{gap:20px}.upload-hero h1{font-size:1.6rem}.subtitle{font-size:.9rem}.upload-zone-inner{padding:24px 16px}.upload-icon-wrap svg{width:48px;height:48px}.upload-text{font-size:.9rem}.file-info-card{padding:12px}#proceed-to-sign{width:100%;justify-content:center}.ad-leaderboard{margin-top:16px}.ad-leaderboard .ad-slot{max-width:100%}.ad-placeholder{width:100%;max-width:100%;height:60px;font-size:.65rem}.ad-sidebar{display:none}.sign-toolbar{flex-wrap:wrap;padding:8px;gap:4px}.btn-tool{padding:8px}.btn-tool span,.toolbar-divider{display:none}.toolbar-spacer{flex-basis:100%;height:0}#btn-finish-signing{width:100%;justify-content:center}#btn-finish-signing span{display:inline}.page-nav{width:60px}.sign-content{flex-direction:column}.page-nav{width:100%;max-height:80px;flex-direction:row;border-right:none;border-bottom:1px solid var(--border-subtle)}.page-thumbnails{display:flex;flex-direction:row;overflow-x:auto;overflow-y:hidden;gap:8px;padding:8px}.thumb-wrap{min-width:50px;width:50px}.document-viewer{overflow-x:auto}.page-wrapper{transform-origin:top left}.page-wrapper img{width:100%!important;max-width:816px}.download-container{padding:24px 16px}.download-success h2{font-size:1.4rem}.download-actions{flex-direction:column;gap:10px}.download-actions button{width:100%;justify-content:center}.modal{width:95%;max-height:90vh;overflow-y:auto}.font-grid{grid-template-columns:repeat(2,1fr)}#draw-canvas{width:100%!important;height:150px}.modal-body{padding:12px}}@media (max-width: 480px){.upload-hero h1{font-size:1.3rem}.subtitle{font-size:.82rem}.header-steps .step{padding:3px 6px;font-size:.65rem}.logo-text{font-size:1rem}.format-badge{font-size:.65rem;padding:3px 8px}.sign-toolbar,.btn-tool{padding:6px}}.ad-banner{display:flex;flex-direction:column;align-items:center;gap:4px}.ad-label{font-size:.6rem;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em;opacity:.6}.ad-leaderboard{margin-top:32px;width:100%}.ad-inner{display:flex;flex-direction:column;align-items:center;gap:4px}.ad-slot{border:none;border-radius:var(--radius-sm);background:transparent;overflow:hidden}.ad-placeholder{width:728px;max-width:100%;height:90px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:.75rem;font-weight:500;letter-spacing:.05em;opacity:.5}.ad-placeholder-tall{width:130px;height:400px}.ad-sidebar{margin-top:16px;padding:0 4px}.ad-sidebar .ad-slot{width:100%}.ad-sidebar .ad-label{font-size:.55rem;align-self:center}.lang-selector{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:#ffffff0f;border:1px solid var(--border-glass);border-radius:var(--radius-sm);color:var(--text-secondary);font-family:var(--font-sans);font-size:.75rem;padding:6px 28px 6px 10px;cursor:pointer;transition:all .2s ease;outline:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center}.lang-selector:hover{background:#ffffff1a;border-color:var(--primary);color:var(--text-primary)}.lang-selector:focus{border-color:var(--primary);box-shadow:0 0 0 2px #6366f133}.lang-selector option{background:var(--bg-deep);color:var(--text-primary)}