:root{
  --blue-900:#0D47A1; --blue-800:#1565C0; --blue-700:#1976D2; --blue-500:#2196F3;
  --blue-50:#E3F2FD; --gray-1:#F8F8F8; --gray-5:#f5f5f5; --gray-10:#e0e0e0;
  --gray-20:#bdbdbd; --gray-60:#757575; --ink:#323232; --white:#fff;
  --radius:8px; --shadow:0 1px 3px rgba(0,0,0,.12),0 1px 2px rgba(0,0,0,.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:Roboto,system-ui,sans-serif;color:var(--ink);background:var(--gray-5);}
a{color:inherit;text-decoration:none}

.topbar{background:linear-gradient(90deg,var(--blue-800),var(--blue-700));
  color:#fff;display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;height:56px;box-shadow:var(--shadow);position:sticky;top:0;z-index:10}
.brand{display:flex;align-items:center;gap:14px;font-size:18px}
.brand .mark{font-weight:700;letter-spacing:2px;font-size:20px}
.brand .divider{width:1px;height:24px;background:rgba(255,255,255,.4)}
.brand .title{font-weight:500}
.brand .title em{font-style:normal;font-weight:300;opacity:.8}
.meta{font-size:13px;opacity:.9;font-weight:300}

/* nav — segmented pill buttons (clear clickable affordance) */
.tabs{max-width:1080px;margin:0 auto;padding:16px 24px 0;display:flex;gap:8px}
.tabs a{padding:8px 18px;font-size:14px;font-weight:500;color:var(--blue-800);
  background:#fff;border:1px solid var(--gray-10);border-radius:22px;
  box-shadow:var(--shadow);cursor:pointer;transition:.12s;
  display:inline-flex;align-items:center;gap:7px}
.tabs a::before{content:"";width:6px;height:6px;border-radius:50%;
  background:var(--gray-20);transition:.12s}
.tabs a:hover{border-color:var(--blue-500);background:var(--blue-50)}
.tabs a:hover::before{background:var(--blue-500)}
.tabs a.active{background:var(--blue-700);border-color:var(--blue-700);color:#fff;
  box-shadow:0 2px 6px rgba(21,101,192,.3)}
.tabs a.active::before{background:#fff}

/* data tables (patient list + dictionary) */
.ptable,.dtable{width:100%;border-collapse:collapse;background:#fff;
  border:1px solid var(--gray-10);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);font-size:14px}
.ptable thead th,.dtable thead th{background:var(--gray-1);text-align:left;
  padding:11px 16px;font-size:12px;font-weight:700;text-transform:uppercase;
  letter-spacing:.4px;color:var(--gray-60);border-bottom:1px solid var(--gray-10)}
.ptable td,.dtable td{padding:11px 16px;border-top:1px solid var(--gray-5)}
.ptable tbody tr{cursor:pointer;transition:.1s}
.ptable tbody tr:hover{background:#fbfdff}
.ptable .pid a{color:var(--blue-800);font-weight:500;font-variant-numeric:tabular-nums}
.ptable tbody tr:hover .pid a{text-decoration:underline}
.num{text-align:right;font-variant-numeric:tabular-nums;color:var(--gray-60)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;color:var(--gray-60)}
.dtable .type{color:var(--blue-700);font-size:12.5px}
.dtable .choices{color:var(--gray-60);font-size:12.5px}
.dtable .secrow td{background:var(--gray-1);font-size:12px;font-weight:700;
  text-transform:uppercase;letter-spacing:.5px;color:var(--gray-20)}
.dtable .derived{color:var(--ink)}
.dtable .dtag{margin-left:8px;background:#FFF3E0;border:1px solid #FFE0B2;color:#E65100;
  border-radius:20px;padding:1px 8px;font-size:11px;font-weight:500}

.crumbs{max-width:1080px;margin:0 auto;padding:16px 24px 0;display:flex;gap:8px;
  align-items:center;font-size:14px;color:var(--gray-60);flex-wrap:wrap}
.crumbs a{color:var(--blue-700);font-weight:500}
.crumbs a:hover{text-decoration:underline}
.crumbs .sep{color:var(--gray-20)}
.crumbs .here{color:var(--ink);font-weight:500}

main{max-width:1080px;margin:0 auto;padding:20px 24px 60px}
.loading{padding:60px;text-align:center;color:var(--gray-60)}

.pagehead{margin:4px 0 18px}
.pagehead h1{font-size:22px;font-weight:500;margin:0 0 4px}
.pagehead .sub{color:var(--gray-60);font-size:14px}

/* patient grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.card{background:#fff;border:1px solid var(--gray-10);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:16px 18px;cursor:pointer;transition:.12s;
  display:block}
.card:hover{border-color:var(--blue-500);transform:translateY(-1px);
  box-shadow:0 4px 10px rgba(21,101,192,.15)}
.card .pid{font-size:18px;font-weight:500;color:var(--blue-800);font-variant-numeric:tabular-nums}
.card .row{display:flex;justify-content:space-between;margin-top:8px;font-size:13px;color:var(--gray-60)}
.pill{display:inline-block;background:var(--blue-50);color:var(--blue-800);
  border-radius:20px;padding:2px 10px;font-size:12px;font-weight:500}

/* instrument list */
.ilist{display:flex;flex-direction:column;gap:10px}
.irow{background:#fff;border:1px solid var(--gray-10);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:14px 18px;cursor:pointer;display:flex;
  align-items:center;justify-content:space-between;transition:.12s}
.irow:hover{border-color:var(--blue-500);background:#fbfdff}
.irow .lbl{font-weight:500;font-size:15px}
.irow .chev{color:var(--blue-500);font-size:20px}
.badge{background:var(--gray-5);border:1px solid var(--gray-10);border-radius:20px;
  padding:2px 10px;font-size:12px;color:var(--gray-60);margin-left:10px}
.badge.rep{background:#FFF3E0;border-color:#FFE0B2;color:#E65100}

/* instrument detail — fields */
.instance{background:#fff;border:1px solid var(--gray-10);border-radius:var(--radius);
  box-shadow:var(--shadow);margin-bottom:16px;overflow:hidden}
.instance .ihead{background:var(--gray-1);border-bottom:1px solid var(--gray-10);
  padding:10px 18px;font-weight:500;font-size:14px;color:var(--blue-800)}
.section{padding:6px 18px;margin-top:6px;font-size:12px;font-weight:700;
  text-transform:uppercase;letter-spacing:.5px;color:var(--gray-20)}
.field{display:grid;grid-template-columns:minmax(220px,42%) 1fr;gap:16px;
  padding:9px 18px;border-top:1px solid var(--gray-5);font-size:14px}
.field:first-of-type{border-top:none}
.field .k{color:var(--gray-60)}
.field .v{color:var(--ink);white-space:pre-wrap}
.field .v.empty{color:var(--gray-20)}
.field .v .code{color:var(--gray-20);font-size:12px;margin-left:6px}

.foot{max-width:1080px;margin:0 auto;padding:16px 24px 40px;display:flex;
  justify-content:space-between;font-size:12px;color:var(--gray-20)}
.foot .ro{font-style:italic}
.empty-note{color:var(--gray-20);padding:30px;text-align:center}

/* ---- topbar right + user box --------------------------------------------- */
.topright{display:flex;align-items:center;gap:16px}
.brand .mark{cursor:pointer}
.userbox{display:flex;align-items:center;gap:10px;font-size:13px}
.userbox .ub-user{opacity:.9;font-weight:400}
.userbox .ub-logout{background:rgba(255,255,255,.15);color:#fff;border:1px solid rgba(255,255,255,.35);
  border-radius:20px;padding:4px 12px;font-size:12px;font-weight:500;cursor:pointer;transition:.12s;font-family:inherit}
.userbox .ub-logout:hover{background:rgba(255,255,255,.28)}

/* ---- pagehead with right-aligned actions (export) ------------------------ */
.pagehead{margin:4px 0 18px;display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}
.pagehead .ph-text{min-width:0}
.pagehead .ph-actions{flex-shrink:0}
.btn-export{background:#fff;color:var(--blue-800);border:1px solid var(--gray-10);border-radius:22px;
  padding:8px 16px;font-size:13px;font-weight:500;cursor:pointer;box-shadow:var(--shadow);
  transition:.12s;font-family:inherit;display:inline-flex;align-items:center;gap:7px}
.btn-export::before{content:"↓";font-weight:700;color:var(--blue-500)}
.btn-export:hover{border-color:var(--blue-500);background:var(--blue-50)}

/* ---- projects landing ---------------------------------------------------- */
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.pcard{background:#fff;border:1px solid var(--gray-10);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:18px 20px;cursor:pointer;transition:.12s;display:block}
.pcard:hover{border-color:var(--blue-500);transform:translateY(-1px);box-shadow:0 4px 12px rgba(21,101,192,.15)}
.pcard-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.pcard-id{font-size:18px;font-weight:500;color:var(--blue-800)}
.pcard-pi{margin-top:5px;font-size:13px;color:var(--gray-60)}
.pcard-counts{display:flex;gap:18px;margin-top:14px;font-size:13px;color:var(--gray-60)}
.pcard-counts b{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}
.pcard-foot{margin-top:14px;padding-top:12px;border-top:1px solid var(--gray-5);
  font-size:12px;color:var(--gray-20);display:flex;justify-content:space-between;align-items:center}
.pcard-foot .chev{color:var(--blue-500);font-size:18px}

/* ---- login gate ---------------------------------------------------------- */
body.gated{overflow:hidden}
#gate{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--blue-800),var(--blue-900));padding:24px}
.login-card{background:#fff;border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,.3);
  padding:32px 30px;width:100%;max-width:380px;display:flex;flex-direction:column;gap:14px}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:2px}
.login-brand .mark{font-weight:700;letter-spacing:2px;font-size:22px;color:var(--blue-800)}
.login-brand .lg-sub{font-size:14px;color:var(--gray-60);font-weight:300}
.login-card h2{margin:0;font-size:19px;font-weight:500;color:var(--ink)}
.login-card label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--gray-60);font-weight:500}
.login-card input{padding:10px 12px;border:1px solid var(--gray-10);border-radius:8px;
  font-size:15px;font-family:inherit;color:var(--ink)}
.login-card input:focus{outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px var(--blue-50)}
.lg-btn{margin-top:6px;background:var(--blue-700);color:#fff;border:none;border-radius:8px;
  padding:11px;font-size:15px;font-weight:500;cursor:pointer;font-family:inherit;transition:.12s}
.lg-btn:hover{background:var(--blue-800)}
.lg-btn:disabled{opacity:.6;cursor:default}
.login-err{background:#FDECEA;border:1px solid #F5C6C0;color:#B71C1C;border-radius:8px;
  padding:9px 12px;font-size:13px}