:root{--bg:#f3f4f6;--card:#fff;--ink:#111827;--muted:#6b7280;--line:#e5e7eb;--acc:#2563eb;--ok:#16a34a;--warn:#d97706;--bad:#dc2626}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--acc)}
header.top{background:#1e293b;color:#fff;padding:10px 16px;display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:20}
header.top .brand{font-weight:700;font-size:17px;color:#fff;text-decoration:none}
header.top nav{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}
header.top nav a,header.top nav button{color:#e2e8f0;text-decoration:none;font-size:14px;background:none;border:0;cursor:pointer}
main{max-width:1100px;margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:14px}
h1{font-size:22px;margin:0 0 12px}h2{font-size:16px;margin:0 0 10px}
.btn{display:inline-block;background:var(--acc);color:#fff;border:0;border-radius:8px;padding:9px 14px;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none;line-height:1.2}
.btn.sec{background:#e5e7eb;color:var(--ink)}.btn.ok{background:var(--ok)}.btn.warn{background:var(--warn)}.btn.bad{background:var(--bad)}
.btn.sm{padding:6px 10px;font-size:13px}.btn:disabled{opacity:.5;cursor:default}
.btn.on{outline:3px solid #93c5fd}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=url],textarea,select{width:100%;padding:8px 10px;border:1px solid #d1d5db;border-radius:8px;font:inherit;background:#fff}
label.lbl{display:block;font-size:13px;color:var(--muted);margin:8px 0 4px}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.muted{color:var(--muted);font-size:13px}
.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;background:#e5e7eb}
.badge.draft{background:#e5e7eb}.badge.sent{background:#fef3c7;color:#92400e}.badge.completed{background:#dcfce7;color:#166534}.badge.declined{background:#fee2e2;color:#991b1b}
.badge.pending{background:#fef3c7;color:#92400e}.badge.signed{background:#dcfce7;color:#166534}
table.list{width:100%;border-collapse:collapse}table.list td,table.list th{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:14px}
.drop{border:2px dashed #cbd5e1;border-radius:12px;padding:22px;text-align:center;color:var(--muted);cursor:pointer}
.drop.over{border-color:var(--acc);background:#eff6ff}
.note{background:#fffbeb;border:1px solid #fcd34d;color:#78350f;padding:8px 12px;border-radius:8px;font-size:13px}
.note.red{background:#fef2f2;border-color:#fca5a5;color:#7f1d1d}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#111827;color:#fff;padding:10px 16px;border-radius:10px;font-size:14px;display:none;z-index:50;max-width:90vw}

/* editor */
.editor{display:grid;grid-template-columns:200px 1fr 300px;gap:14px;align-items:start}
@media(max-width:980px){.editor{grid-template-columns:1fr}.side{order:2}}
.side{position:sticky;top:60px}
.tools .btn{display:block;width:100%;margin:6px 0;text-align:left}
.pages{display:flex;flex-direction:column;gap:18px;align-items:center}
.page{position:relative;background:#fff;box-shadow:0 2px 10px #0002;width:100%;max-width:900px;user-select:none;-webkit-user-select:none}
.page img{display:block;width:100%;height:auto;pointer-events:none}
.page .pno{position:absolute;right:6px;top:6px;font-size:11px;color:#9ca3af;background:#fff8;padding:1px 5px;border-radius:4px}
.field{position:absolute;border:2px solid var(--fc,#2563eb);background:color-mix(in srgb,var(--fc,#2563eb) 12%,transparent);border-radius:4px;font-size:12px;overflow:hidden;cursor:move;touch-action:none}
.field.sel{box-shadow:0 0 0 3px #93c5fd}
.field .tag{position:absolute;left:0;top:0;background:var(--fc,#2563eb);color:#fff;font-size:10px;padding:0 5px;border-radius:0 0 4px 0;white-space:nowrap;pointer-events:none;line-height:14px}
.field .val{position:absolute;inset:0;display:flex;align-items:center;justify-content:flex-start;padding:2px 4px;font-size:13px;color:#1f2937;pointer-events:none;overflow:hidden;white-space:nowrap}
.field .val img{max-width:100%;max-height:100%;object-fit:contain}
.field .rs{position:absolute;right:-6px;bottom:-6px;width:14px;height:14px;background:var(--fc,#2563eb);border-radius:50%;cursor:nwse-resize;touch-action:none}
.field .del{position:absolute;right:-8px;top:-8px;width:18px;height:18px;border-radius:50%;background:#dc2626;color:#fff;border:0;font-size:12px;line-height:18px;text-align:center;cursor:pointer;display:none;padding:0}
.field.sel .del{display:block}
.field.other{opacity:.45;cursor:default}
.field.sign-me{cursor:pointer;border-style:dashed}
.field.sign-me.filled{border-style:solid;background:#fff}
.signer-row{display:grid;grid-template-columns:1fr 1fr auto;gap:6px;margin-bottom:6px;align-items:center}
.swatch{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:6px;vertical-align:middle}
.links .lnk{border-top:1px solid var(--line);padding:8px 0;font-size:13px;word-break:break-all}

/* signer page */
.signhead{background:#fff;border-bottom:1px solid var(--line);padding:14px 16px}
.signhead h1{font-size:18px;margin:0 0 4px}
.signmain{max-width:860px;margin:0 auto;padding:12px}
.consent{background:#eff6ff;border:1px solid #bfdbfe;border-radius:12px;padding:14px;margin-bottom:14px}
.consent label{display:flex;gap:10px;align-items:flex-start;font-size:14px}
.consent input{width:22px;height:22px;flex:0 0 auto;margin-top:1px}
.sfield{position:absolute;border:2px dashed var(--fc,#2563eb);background:color-mix(in srgb,var(--fc,#2563eb) 14%,transparent);border-radius:4px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;color:var(--fc,#2563eb);overflow:hidden;touch-action:manipulation}
.sfield.filled{border-style:solid;background:#fff;color:#1f2937;font-weight:400;justify-content:flex-start;padding:2px 4px;white-space:nowrap}
.sfield.filled img{max-width:100%;max-height:100%;object-fit:contain}
.sfield.other{border-style:dotted;opacity:.35;cursor:default}
.sfield.missing{animation:pulse 1.2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 #f59e0b88}50%{box-shadow:0 0 0 6px #f59e0b00}}
.sbar{position:sticky;bottom:0;background:#fff;border-top:1px solid var(--line);padding:10px 12px calc(env(safe-area-inset-bottom) + 10px);display:flex;gap:8px;align-items:center;z-index:10}
.sbar .prog{flex:1;font-size:14px;color:var(--muted)}

/* signature pad modal */
.modal{position:fixed;inset:0;background:#0007;display:none;align-items:center;justify-content:center;z-index:40;padding:12px}
.modal.show{display:flex}
.modal .box{background:#fff;border-radius:14px;width:min(96vw,560px);max-height:92vh;overflow:auto;padding:14px}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:10px}
.tabs button{background:none;border:0;padding:8px 12px;font:inherit;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;cursor:pointer}
.tabs button.on{color:var(--acc);border-bottom-color:var(--acc)}
.padwrap{border:1px solid #d1d5db;border-radius:10px;background:#fff;position:relative;touch-action:none}
.padwrap canvas{display:block;width:100%;height:200px;touch-action:none}
.padwrap .base{position:absolute;left:14px;right:14px;bottom:44px;border-top:1px solid #cbd5e1;pointer-events:none}
.padwrap .x{position:absolute;left:14px;bottom:46px;color:#94a3b8;font-size:16px;pointer-events:none}
.typedprev{height:110px;display:flex;align-items:center;justify-content:center;border:1px solid #d1d5db;border-radius:10px;background:#fff;margin-top:8px}
.typedprev img{max-height:100px;max-width:100%}
.lib{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px}
.lib .it{border:1px solid #d1d5db;border-radius:8px;padding:6px;cursor:pointer;text-align:center;background:#fff}
.lib .it img{max-width:100%;max-height:60px}.lib .it.on{outline:3px solid #93c5fd}
.lib .it small{display:block;color:var(--muted);font-size:11px}

/* tabs: pages / edit / sign */
.tabbar{display:flex;gap:2px;background:#0f172a;border-radius:8px;padding:2px}
.tabbar button{background:none;border:0;color:#cbd5e1;font:inherit;font-size:13px;font-weight:600;padding:5px 10px;border-radius:6px;cursor:pointer;white-space:nowrap}
.tabbar button.on{background:#2563eb;color:#fff}
.only-sign,.only-edit,.only-pages{display:none}
body.tab-sign .only-sign,body.tab-edit .only-edit,body.tab-pages .only-pages{display:block}
body.tab-pages .not-pages{display:none}
body.tab-sign .not-sign{display:none}
body:not(.tab-sign) .field{opacity:.35;pointer-events:none}
body:not(.tab-edit) .edit{pointer-events:none}
body.tab-pages #pagegrid{display:grid}
.pagegrid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.thumb{background:#fff;border:2px solid var(--line);border-radius:10px;padding:6px;cursor:pointer;user-select:none;position:relative}
.thumb.sel{border-color:var(--acc);box-shadow:0 0 0 3px #bfdbfe}
.thumb.over{border-style:dashed;border-color:var(--acc)}
.thumb.del{opacity:.4}.thumb.del .img::after{content:'deleted';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#dc2626;font-weight:700;font-size:14px;background:#fff6}
.thumb .img{position:relative;aspect-ratio:1/1.2;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#f8fafc;border-radius:6px}
.thumb .img img{max-width:100%;max-height:100%;box-shadow:0 1px 4px #0003;transition:transform .15s}
.thumb .cap{font-size:12px;text-align:center;margin-top:6px}
.thumb .ops{display:flex;justify-content:space-between;gap:2px;margin-top:4px}
.thumb .ops button{flex:1;border:1px solid var(--line);background:#fff;border-radius:6px;font-size:13px;padding:3px 0;cursor:pointer}
.thumb .ops button:hover{background:#eff6ff}
.edit{position:absolute;border:1px dashed #94a3b8;border-radius:2px;overflow:hidden;cursor:move;touch-action:none;box-sizing:border-box}
.edit .tag{position:absolute;left:0;top:-14px;background:#475569;color:#fff;font-size:9px;padding:0 4px;border-radius:3px 3px 0 0;white-space:nowrap;pointer-events:none;line-height:13px;display:none}
.edit.sel{border:2px solid var(--acc);box-shadow:0 0 0 3px #93c5fd;overflow:visible}.edit.sel .tag{display:block}
.edit .txt{position:absolute;inset:0;padding:0 2px;white-space:pre-wrap;line-height:1.15;overflow:hidden;pointer-events:none}
.edit.e-whiteout{background:#fff;border-color:#cbd5e1}
.edit.e-highlight{background:rgba(253,224,71,.45);border-color:#eab308}
.edit.e-redact{background:#000;border-color:#000}
.edit.e-replace{background:#fff}
.edit.e-text{background:transparent}
.edit.e-check .txt{display:flex;align-items:center;justify-content:center}
.edit.e-image img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;pointer-events:none}
.edit .rs{position:absolute;right:-6px;bottom:-6px;width:14px;height:14px;background:var(--acc);border-radius:50%;cursor:nwse-resize;touch-action:none;display:none}
.edit .del{position:absolute;right:-8px;top:-8px;width:18px;height:18px;border-radius:50%;background:#dc2626;color:#fff;border:0;font-size:12px;line-height:18px;text-align:center;cursor:pointer;display:none;padding:0}
.edit.sel .rs,.edit.sel .del{display:block}
@media(max-width:980px){.tabbar{order:3;width:100%}.tabbar button{flex:1}}