:root{
  --bg:#0b0f17; --panel:#131926; --panel2:#0e1422; --border:#222b3d;
  --text:#e6e9ef; --muted:#9aa4b6; --accent:#4c7dff; --accent2:#3a66e0;
  --green:#1f6b43; --green-t:#7ee2a8; --red:#6b1f1f; --red-t:#f0a0a0;
  --radius:12px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--text);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.muted{color:var(--muted)}
.small{font-size:.85rem}

/* ---------- auth (centered card) ---------- */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem}
.auth-card{width:100%;max-width:420px;background:var(--panel);border:1px solid var(--border);
  border-radius:14px;padding:2rem;box-shadow:0 10px 40px rgba(0,0,0,.45)}
.brand{font-weight:800;letter-spacing:.5px;font-size:1.25rem}
.brand b{color:var(--accent)}
.auth-card h1{font-size:1.35rem;margin:1.2rem 0 .25rem}
.auth-sub{color:var(--muted);font-size:.9rem;margin:0 0 1.4rem}

/* ---------- app shell ---------- */
.topbar{display:flex;align-items:center;gap:1.5rem;padding:.9rem 1.5rem;border-bottom:1px solid var(--border);
  background:var(--panel2);position:sticky;top:0;z-index:10}
.topbar .nav{display:flex;gap:1.1rem;flex:1;flex-wrap:wrap}
.topbar .nav a{color:var(--muted);font-size:.92rem;padding:.2rem 0}
.topbar .nav a.active,.topbar .nav a:hover{color:var(--text);text-decoration:none}
.topbar .right{display:flex;align-items:center;gap:1rem}
.container{max-width:1040px;margin:0 auto;padding:1.8rem 1.5rem}

/* ---------- elements ---------- */
label{display:block;font-size:.8rem;color:#b8c0d0;margin:.9rem 0 .35rem}
input,select{width:100%;padding:.7rem .8rem;border-radius:8px;border:1px solid #2a3650;
  background:var(--panel2);color:var(--text);font-size:.95rem}
input:focus,select:focus{outline:none;border-color:var(--accent)}
.checkrow{display:flex;align-items:center;gap:.5rem;margin:.9rem 0}
.checkrow input{width:auto}
.btn{display:inline-block;border:0;border-radius:8px;background:var(--accent);color:#fff;
  font-size:.95rem;font-weight:600;padding:.7rem 1.1rem;cursor:pointer;text-align:center}
.btn:hover{background:var(--accent2);text-decoration:none}
.btn.block{width:100%}
.btn.sm{padding:.45rem .8rem;font-size:.85rem}
.btn.ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn.danger{background:#3a1414;border:1px solid var(--red);color:var(--red-t)}
.btn.green{background:#10271c;border:1px solid var(--green);color:var(--green-t)}
.btn:disabled{opacity:.55;cursor:not-allowed}

.grid{display:grid;gap:1rem}
.grid.cols-2{grid-template-columns:1fr 1fr}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
@media(max-width:720px){.grid.cols-2,.grid.cols-3{grid-template-columns:1fr}}

.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:1.3rem}
.card h2{margin:.1rem 0 1rem;font-size:1.05rem}
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.3rem;gap:1rem;flex-wrap:wrap}
.page-head h1{font-size:1.4rem;margin:0}

.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:1.4rem}
@media(max-width:720px){.stats{grid-template-columns:1fr}}
.stat{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem}
.stat .k{color:var(--muted);font-size:.8rem}
.stat .v{font-size:1.5rem;font-weight:700;margin-top:.3rem}

table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:.7rem .6rem;border-bottom:1px solid var(--border);font-size:.9rem}
th{color:var(--muted);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em}
tr:last-child td{border-bottom:0}

.badge{display:inline-block;padding:.2rem .55rem;border-radius:999px;font-size:.75rem;font-weight:600}
.badge.open,.badge.range{background:#10271c;color:var(--green-t)}
.badge.closed{background:#1d2533;color:var(--muted)}
.badge.error{background:#3a1414;color:var(--red-t)}
.badge.archive{background:#1d2533;color:var(--muted)}
.badge.monitoring{background:#2a2410;color:#e2cf7e}
.pos{color:var(--green-t)} .neg{color:var(--red-t)}

.alert{padding:.7rem .9rem;border-radius:8px;margin-bottom:1rem;font-size:.9rem}
.alert.ok{background:#10271c;border:1px solid var(--green);color:var(--green-t)}
.alert.err{background:#2a1414;border:1px solid var(--red);color:var(--red-t)}
.errors{margin:.4rem 0 0;padding-left:1.1rem;color:var(--red-t);font-size:.85rem}
.hint{color:var(--muted);font-size:.8rem;margin-top:.35rem}
.empty{text-align:center;color:var(--muted);padding:2.5rem 1rem}
.inline{display:inline}
.row-actions{display:flex;gap:.5rem;flex-wrap:wrap}

/* paper/live segmented toggle */
.mode-toggle{display:inline-flex;border:1px solid var(--border);border-radius:8px;overflow:hidden}
.mode-toggle .seg{background:transparent;border:0;color:var(--muted);padding:.4rem .8rem;font-size:.82rem;cursor:pointer}
.mode-toggle .seg.on{background:var(--accent);color:#fff}
.mode-toggle .seg.on.live{background:#7a1f1f;color:#fff}
.mode-banner{font-size:.8rem;padding:.5rem .9rem;border-radius:8px;margin-bottom:1rem}
.mode-banner.live{background:#2a1414;border:1px solid var(--red);color:var(--red-t)}
.mode-banner.paper{background:#10271c;border:1px solid var(--green);color:var(--green-t)}