:root{
  --bg:#f4f6fa; --card:#fff; --ink:#1a2233; --muted:#667085; --line:#e3e8f0;
  --primary:#1d4ed8; --primary-d:#1e40af; --ok:#067647; --ok-bg:#ecfdf3;
  --err:#b42318; --err-bg:#fef3f2; --warn:#b54708; --warn-bg:#fffaeb;
  --radius:10px; --shadow:0 1px 3px rgba(16,24,40,.08),0 1px 2px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.5 -apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}

/* ---------- login ---------- */
.login-body{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(160deg,#0f2a5c,#1d4ed8)}
.login-card{background:var(--card);width:380px;max-width:92vw;padding:32px;border-radius:14px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.login-card h1{margin:0 0 4px;font-size:22px}
.login-card .muted{margin-top:0}

/* ---------- layout ---------- */
.topnav{display:flex;align-items:center;gap:18px;background:#0f2a5c;color:#fff;padding:12px 22px;position:sticky;top:0;z-index:5}
.topnav a{color:#cdd8ee}.topnav a:hover{color:#fff}
.topnav .brand{font-weight:700;font-size:17px;margin-right:12px;color:#fff}
.topnav .navlinks{display:flex;align-items:center;gap:16px;margin-left:auto;font-size:14px}
.whoami{color:#9db4dd;font-size:13px}
.container{max-width:1100px;margin:26px auto;padding:0 18px}

/* ---------- cards / forms ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:20px}
.card h2{margin:0 0 16px;font-size:18px}
.muted{color:var(--muted)}
label{display:block;font-weight:600;font-size:13px;margin:12px 0 4px;color:#344054}
input,select,textarea{width:100%;padding:9px 11px;border:1px solid #cbd5e1;border-radius:7px;font:inherit;background:#fff}
input:focus,select:focus{outline:2px solid #bfdbfe;border-color:var(--primary)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:0 16px}
fieldset{border:1px solid var(--line);border-radius:8px;margin:14px 0;padding:6px 16px 16px}
legend{font-weight:700;font-size:14px;padding:0 6px}
.checkrow{display:flex;align-items:center;gap:8px;margin-top:12px}
.checkrow input{width:auto}
.checkrow label{margin:0;font-weight:500}
.inline{display:flex;gap:10px;align-items:center}
.inline input{flex:1}

/* ---------- buttons / badges / alerts / tables ---------- */
.btn{display:inline-block;border:0;border-radius:7px;padding:9px 16px;font:inherit;font-weight:600;cursor:pointer;background:#e5e9f2;color:var(--ink)}
.btn:hover{text-decoration:none;filter:brightness(.96)}
.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-d)}
.btn.block{width:100%;margin-top:16px}
.btn.small{padding:5px 12px;font-size:13px}
.btn.ok{background:var(--ok);color:#fff}
.badge{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:700}
.badge.sent{background:var(--warn-bg);color:var(--warn)}
.badge.viewed{background:#eff4ff;color:#3538cd}
.badge.signed{background:var(--ok-bg);color:var(--ok)}
.alert{padding:11px 14px;border-radius:8px;margin:10px 0;font-size:14px}
.alert.error{background:var(--err-bg);color:var(--err)}
.alert.success{background:var(--ok-bg);color:var(--ok)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
tr:hover td{background:#f8fafc}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.stat .num{font-size:30px;font-weight:800}.stat .lbl{color:var(--muted);font-size:13px}
.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.copybox{background:#f1f5f9;border:1px dashed #94a3b8;border-radius:8px;padding:10px 12px;word-break:break-all;font-size:13px}

/* ---------- signature pad ---------- */
.sig-wrap{background:#fff;border:2px dashed #94a3b8;border-radius:10px;touch-action:none}
canvas.sig{width:100%;height:200px;display:block;cursor:crosshair;border-radius:8px}
@media(max-width:720px){.grid2,.grid3{grid-template-columns:1fr}}