:root{--navy:#071e3d;--navy-2:#0b2a52;--cyan:#00b4d8;--cyan-soft:#90e0ef;--ink:#0a1628;--text:#e8f1fb;--text-dim:#8aa3c2;--line:rgba(0,180,216,.18);--ok:#2ecc71;--warn:#f1c40f;--danger:#e74c3c}*{box-sizing:border-box;margin:0;padding:0}body,html{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--navy);color:var(--text);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.app{min-height:100vh;background:radial-gradient(1200px 600px at 80% -10%,rgba(0,180,216,.1),transparent 60%),linear-gradient(160deg,#071e3d,#0a2444 60%,#061831)}.topbar{justify-content:space-between;padding:16px 28px;border-bottom:1px solid var(--line);background:rgba(7,30,61,.7);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:-webkit-sticky;position:sticky;top:0;z-index:10}.logo,.topbar{display:flex;align-items:center}.logo{gap:12px}.shield{width:38px;height:42px}.brand-name{font-size:19px;font-weight:700;letter-spacing:-.3px}.brand-name span{color:var(--cyan)}.brand-sub{font-size:11px;color:var(--text-dim);letter-spacing:.4px}.legal-badge{font-size:11px;color:var(--cyan-soft);border:1px solid var(--line);border-radius:20px;padding:6px 14px;background:rgba(0,180,216,.06)}.steps{display:flex;gap:6px}.step{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--text-dim);padding:6px 12px;border-radius:8px}.step-num{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700;background:hsla(0,0%,100%,.06);color:var(--text-dim)}.step.active{color:var(--text)}.step.active .step-num{background:var(--cyan);color:var(--navy)}.step.done .step-num{background:var(--ok);color:#fff}.content{max-width:820px;margin:0 auto;padding:32px 24px 80px}.card{background:hsla(0,0%,100%,.03);border:1px solid var(--line);border-radius:16px;padding:26px;margin-bottom:20px}.card-hdr{font-size:15px;font-weight:600;margin-bottom:18px;display:flex;align-items:center;gap:9px}.upload{display:block;width:100%;border:2px dashed var(--line);border-radius:14px;padding:48px 24px;text-align:center;cursor:pointer;transition:.18s;background:rgba(0,180,216,.03)}.upload.drag,.upload:hover{border-color:var(--cyan);background:rgba(0,180,216,.08)}.upload-icon{font-size:40px;margin-bottom:12px}.upload-title{font-size:16px;font-weight:600;margin-bottom:6px}.upload-sub{font-size:13px;color:var(--text-dim)}.field{margin-bottom:16px}.label{display:block;font-size:13px;color:var(--text-dim);margin-bottom:7px}.input{width:100%;padding:12px 14px;background:hsla(0,0%,100%,.04);border:1px solid var(--line);border-radius:10px;color:var(--text);font-size:14px}.input:focus{outline:none;border-color:var(--cyan)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--cyan);color:var(--navy);border:none;border-radius:10px;padding:13px 24px;font-size:14px;font-weight:700;cursor:pointer;transition:.15s}.btn:hover{filter:brightness(1.08)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-sec{background:transparent;color:var(--text);border:1px solid var(--line)}.btn-row{display:flex;gap:12px;justify-content:flex-end;margin-top:8px}.pdf-wrap{background:#1a1a1a;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;align-items:center;max-height:70vh;overflow-y:auto}.pdf-page-holder,.pdf-wrap{position:relative}.zona{position:absolute;border:2px dashed var(--cyan);background:rgba(0,180,216,.15);cursor:move;display:grid;place-items:center;font-size:11px;color:var(--cyan-soft);-webkit-user-select:none;-moz-user-select:none;user-select:none}.sig-tabs{display:flex;gap:6px;margin-bottom:16px}.sig-tab{flex:1 1;padding:10px;text-align:center;font-size:13px;border-radius:8px;cursor:pointer;border:1px solid var(--line);color:var(--text-dim);background:transparent}.sig-tab.active{background:var(--cyan);color:var(--navy);font-weight:600;border-color:var(--cyan)}.sig-pad{background:#fff;border-radius:10px;width:100%;height:180px;cursor:crosshair;touch-action:none}.cert-row{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}.cert-k{color:var(--text-dim)}.cert-v{color:var(--text);font-weight:500;word-break:break-all;text-align:right}.center{min-height:100vh;display:grid;place-items:center;padding:24px}.alert{padding:12px 16px;border-radius:10px;font-size:13px;margin-bottom:16px}.alert-err{background:rgba(231,76,60,.12);color:#ff9b8f;border:1px solid rgba(231,76,60,.3)}.muted{color:var(--text-dim);font-size:13px;line-height:1.6}.pdf-page-badge{position:absolute;top:8px;right:8px;background:rgba(7,30,61,.85);color:var(--cyan-soft);font-size:11px;padding:3px 9px;border-radius:6px;pointer-events:none}.zona-tirador{position:absolute;right:-7px;bottom:-7px;width:16px;height:16px;border-radius:50%;background:var(--cyan);border:2px solid #fff;cursor:nwse-resize}