:root{--bg: #f1f5f9;--card: #ffffff;--ink: #0f172a;--muted: #64748b;--primary: #4f46e5;--primary-ink: #ffffff;--ok: #059669;--warn: #d97706;--danger: #dc2626;--border: #e2e8f0;--radius: 14px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}@media (prefers-color-scheme: dark){:root{--bg: #0b1120;--card: #111827;--ink: #e5e7eb;--muted: #94a3b8;--primary: #6366f1;--border: #1f2937}}*{box-sizing:border-box}.hidden{display:none!important}body{margin:0;min-height:100dvh;background:var(--bg);color:var(--ink);display:flex;flex-direction:column;align-items:center;padding:16px}.app{width:100%;max-width:560px;flex:1;display:flex;flex-direction:column;justify-content:flex-start}.footer{color:var(--muted);font-size:12px;text-align:center;padding:16px 0 4px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-top:24px;box-shadow:0 10px 30px #0206170f}h1{font-size:22px;margin:0 0 4px}h2{font-size:15px;margin:20px 0 8px;color:var(--muted)}.subtitle{color:var(--muted);margin:0 0 20px}.btn{appearance:none;border:1px solid var(--border);background:var(--card);color:var(--ink);border-radius:10px;padding:10px 16px;font-size:14px;font-weight:600;cursor:pointer;transition:transform .05s ease,background .2s ease,border-color .2s ease}.btn:hover{border-color:var(--primary)}.btn:active{transform:translateY(1px)}.btn.primary{background:var(--primary);color:var(--primary-ink);border-color:var(--primary);width:100%}.btn.ghost{background:transparent}.btn.small{padding:6px 12px;font-size:13px}.btn.tiny{padding:4px 10px;font-size:12px}.btn.danger{color:var(--danger);border-color:transparent}.btn.danger:hover{border-color:var(--danger)}.session-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.status{font-size:13px;font-weight:600;padding:4px 10px;border-radius:999px;background:#64748b1f;color:var(--muted);white-space:nowrap}.status[data-status=secured]{background:#05966926;color:var(--ok)}.status[data-status=paired]{background:#d9770626;color:var(--warn)}.status[data-status=error]{background:#dc262626;color:var(--danger)}.qr-section{text-align:center;margin:20px 0}.qr-hint{color:var(--muted);margin:0 0 12px}.qr-canvas{width:240px;height:240px;border-radius:12px;background:#fff;padding:8px}.qr-url{font-size:11px;color:var(--muted);word-break:break-all;margin:12px 0 0}.sas{text-align:center;margin:16px 0;padding:14px;border:1px dashed var(--border);border-radius:12px;background:#6366f10f}.sas-title{font-size:13px;color:var(--muted);margin-bottom:8px}.sas-emoji{font-size:30px;letter-spacing:6px}.sas-digits{font-size:16px;font-variant-numeric:tabular-nums;letter-spacing:3px;margin-top:6px;color:var(--muted)}.sas-hint{font-size:12px;color:var(--warn);margin:12px 0 0}.sas-actions{display:flex;gap:8px;margin-top:12px}.sas-actions .btn{flex:1}.composer-gate.locked{opacity:.5;pointer-events:none}.composer{margin-top:16px}.compose{width:100%;resize:vertical;border:1px solid var(--border);border-radius:10px;padding:12px;font-size:14px;font-family:inherit;background:var(--bg);color:var(--ink)}.composer-actions{margin-top:10px}.op-form{margin-top:14px;padding-top:14px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:8px}.op-label{font-size:13px;color:var(--muted)}.op-user,.op-input{width:100%;border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:14px;font-family:inherit;background:var(--bg);color:var(--ink)}.op-row{display:flex;gap:8px}.op-row .op-input{flex:1}.op-row .btn{white-space:nowrap}.drop-zone{display:block;margin-top:12px;padding:18px;border:2px dashed var(--border);border-radius:12px;text-align:center;color:var(--muted);font-size:13px;cursor:pointer}.drop-zone.dragging{border-color:var(--primary);background:#6366f10f}.file-input{display:none}.progress{font-size:13px;color:var(--primary);min-height:18px;margin-top:8px}.messages-title{margin-top:18px}.messages{display:flex;flex-direction:column;gap:10px}.empty{color:var(--muted);font-size:13px}.item{border:1px solid var(--border);border-radius:10px;padding:10px 12px}.item.out{background:#6366f10d}.item.secret{background:#eab3080f;border-color:#eab30866}.item-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px}.item-actions{display:flex;align-items:center;gap:8px}.item-dir{font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted)}.item-file{font-size:13px;font-weight:600}.item-text{margin:0;white-space:pre-wrap;word-break:break-word;font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.item-secret{display:flex;align-items:center;gap:10px}.item-secret-dots{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:3px;font-size:16px;color:var(--muted);user-select:none}.item-secret-label{font-size:12px;color:var(--muted)}.muted{color:var(--muted);font-size:13px}.toolbar{display:flex;gap:10px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}.toolbar .btn{flex:1}.bookmarks{margin-top:24px}.bookmark-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0;border-top:1px solid var(--border)}.bookmark-label{font-weight:600;font-size:14px}.bookmark-actions{display:flex;gap:6px}