:root {
  --bg: #0c1320;
  --bg-grad: radial-gradient(1200px 600px at 80% -10%, #13243c 0%, transparent 60%), #0c1320;
  --surface: #141d2c;
  --surface-2: #1a2536;
  --border: #25324a;
  --border-soft: #1e293b;
  --text: #e7eef8;
  --muted: #8595ab;
  --muted-2: #5e6c82;
  --accent: #3da5ff;
  --accent-soft: rgba(61,165,255,.14);
  --ok: #2dd4a7;
  --warn: #f0b429;
  --danger: #f3636f;
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 10px;
  --shadow: 0 8px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  background: var(--bg-grad);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
.mono { font-family: var(--mono); }

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border-soft);
  background: rgba(12,19,32,.7);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 600; letter-spacing: .2px; }
.brand .sig {
  width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), #7c5cff);
  display: grid; place-items: center; box-shadow: 0 0 0 1px rgba(61,165,255,.4), 0 4px 14px rgba(61,165,255,.3);
}
.brand .sig svg { width: 15px; height: 15px; }
.brand small { color: var(--muted-2); font-weight: 500; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; display:block; margin-top:-2px;}
.topbar .spacer { flex: 1; }
.topbar .who { color: var(--muted); font-size: 13px; }

/* ---------- layout ---------- */
.wrap { max-width: 1180px; margin: 0 auto; padding: 24px; }
.eyebrow { font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted-2); font-family: var(--mono); }

/* ---------- stat strip ---------- */
.stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin: 18px 0 26px; }
.stat {
  background: var(--surface); border: 1px solid var(--border-soft);
  border-radius: var(--radius); padding: 14px 16px;
}
.stat .n { font-size: 26px; font-weight: 650; font-family: var(--mono); letter-spacing: -.5px; }
.stat .l { color: var(--muted); font-size: 12px; margin-top: 2px; }
.stat.ok .n { color: var(--ok); }
.stat.warn .n { color: var(--warn); }
.stat.danger .n { color: var(--danger); }

/* ---------- section head ---------- */
.section-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.section-head h2 { font-size: 16px; margin: 0; font-weight: 600; }
.section-head .spacer { flex: 1; }

/* ---------- buttons ---------- */
.btn {
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  padding: 8px 14px; border-radius: 8px; font-size: 13px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 7px; transition: .12s;
}
.btn:hover { border-color: var(--accent); background: #1f2b3f; }
.btn svg { width: 15px; height: 15px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #07121f; font-weight: 600; }
.btn.primary:hover { background: #59b2ff; }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--danger); border-color: transparent; background: transparent; }
.btn.danger:hover { background: rgba(243,99,111,.12); border-color: rgba(243,99,111,.4); }
.btn.sm { padding: 5px 9px; font-size: 12px; }

/* ---------- table / cards ---------- */
.panel { background: var(--surface); border: 1px solid var(--border-soft); border-radius: 14px; overflow: hidden; }
table { width: 100%; border-collapse: collapse; }
thead th {
  text-align: left; font-size: 11px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted-2); font-weight: 600; padding: 12px 16px; border-bottom: 1px solid var(--border-soft);
  background: var(--surface-2);
}
tbody td { padding: 13px 16px; border-bottom: 1px solid var(--border-soft); vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: rgba(255,255,255,.015); }
.u-name { font-weight: 600; }
.u-remark { color: var(--muted); font-size: 12px; }
.u-label { font-family: var(--mono); font-size: 12px; color: var(--muted); }

/* ---------- traffic meter (signature) ---------- */
.meter { width: 150px; }
.meter .track { height: 6px; border-radius: 4px; background: #0e1726; overflow: hidden; border: 1px solid var(--border-soft); }
.meter .fill { height: 100%; background: linear-gradient(90deg, var(--accent), #6ea8ff); border-radius: 4px; transition: width .4s; }
.meter.warn .fill { background: linear-gradient(90deg, var(--warn), #f6c560); }
.meter.danger .fill { background: linear-gradient(90deg, var(--danger), #ff8088); }
.meter .nums { font-family: var(--mono); font-size: 11px; color: var(--muted); margin-top: 5px; display: flex; justify-content: space-between; }
.meter .nums b { color: var(--text); font-weight: 600; }

/* ---------- badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; font-weight: 600;
  padding: 3px 9px; border-radius: 999px; letter-spacing: .02em;
}
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.active { color: var(--ok); background: rgba(45,212,167,.12); }
.badge.disabled { color: var(--muted); background: rgba(133,149,171,.12); }
.badge.expired { color: var(--warn); background: rgba(240,180,41,.12); }
.badge.over_limit { color: var(--danger); background: rgba(243,99,111,.12); }
.expiry { font-family: var(--mono); font-size: 12px; }
.expiry .soon { color: var(--warn); }
.expiry .past { color: var(--danger); }
.expiry .none { color: var(--muted-2); }

.row-actions { display: flex; gap: 4px; justify-content: flex-end; }
.icon-btn {
  width: 30px; height: 30px; display: grid; place-items: center; border-radius: 7px;
  background: transparent; border: 1px solid transparent; color: var(--muted);
}
.icon-btn:hover { background: var(--surface-2); border-color: var(--border); color: var(--text); }
.icon-btn svg { width: 15px; height: 15px; }
.icon-btn.danger:hover { color: var(--danger); border-color: rgba(243,99,111,.4); }

.empty { padding: 56px 20px; text-align: center; color: var(--muted); }
.empty h3 { color: var(--text); margin: 0 0 6px; font-weight: 600; }

/* ---------- modal ---------- */
.modal-bg {
  position: fixed; inset: 0; background: rgba(5,9,16,.66); backdrop-filter: blur(3px);
  display: none; align-items: flex-start; justify-content: center; z-index: 50; padding: 60px 16px;
  overflow-y: auto;
}
.modal-bg.open { display: flex; }
.modal {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
  width: 100%; max-width: 520px; box-shadow: var(--shadow); animation: pop .16s ease;
}
@keyframes pop { from { transform: translateY(8px) scale(.98); opacity: 0; } }
.modal header { padding: 18px 22px; border-bottom: 1px solid var(--border-soft); display:flex; align-items:center; }
.modal header h3 { margin: 0; font-size: 16px; }
.modal header .spacer { flex: 1; }
.modal .body { padding: 22px; }
.modal .foot { padding: 16px 22px; border-top: 1px solid var(--border-soft); display: flex; gap: 10px; justify-content: flex-end; }

label.field { display: block; margin-bottom: 16px; }
label.field .lbl { font-size: 12.5px; color: var(--muted); margin-bottom: 6px; display: flex; gap: 8px; align-items:baseline; }
label.field .lbl .hint { color: var(--muted-2); font-size: 11px; }
input, select {
  width: 100%; padding: 9px 12px; border-radius: 8px; background: #0e1726;
  border: 1px solid var(--border); color: var(--text); font-size: 14px; font-family: inherit;
}
input.mono { font-family: var(--mono); }
input:focus, select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.switch-row { display: flex; align-items: center; gap: 10px; }
.switch-row input { width: auto; }
.form-err { color: var(--danger); font-size: 13px; margin-bottom: 12px; min-height: 0; }

/* link box */
.linkbox { background: #0e1726; border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-bottom: 10px; }
.linkbox .k { font-size: 11px; color: var(--muted-2); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 4px; }
.linkbox .v { font-family: var(--mono); font-size: 12px; word-break: break-all; color: var(--text); display:flex; gap:8px; align-items:flex-start;}
.linkbox .v span { flex: 1; }

/* toast */
#toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text);
  padding: 11px 18px; border-radius: 10px; box-shadow: var(--shadow); opacity: 0; transition: .2s; z-index: 100; font-size: 13px; }
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.err { border-color: var(--danger); }
#toast.ok { border-color: var(--ok); }

.toolbar { display: flex; gap: 8px; align-items: center; }
.search { position: relative; }
.search input { padding-left: 32px; width: 220px; }
.search svg { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); width: 15px; height: 15px; color: var(--muted-2); }

.tab-row { display: flex; gap: 4px; margin-bottom: 18px; border-bottom: 1px solid var(--border-soft); }
.tab { padding: 10px 14px; color: var(--muted); border-bottom: 2px solid transparent; font-weight: 500; font-size: 13.5px; }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

.settings-card { max-width: 620px; }
.kv-note { color: var(--muted); font-size: 12.5px; margin-top: -6px; margin-bottom: 16px; }
.danger-zone { border: 1px solid rgba(243,99,111,.3); border-radius: 12px; padding: 18px; margin-top: 20px; }
.danger-zone h3 { margin: 0 0 4px; font-size: 14px; color: var(--danger); }

@media (max-width: 820px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .wrap { padding: 16px; }
  .meter { width: 110px; }
  .hide-sm { display: none; }
}