:root {
  --bg: #0b0e17;
  --bg-card: #121726;
  --bg-elev: #192036;
  --border: #26304d;
  --text: #eef1f8;
  --muted: #9aa5c4;
  --gold: #e5b869;
  --primary: #6366f1;
  --green: #34d399;
  --red: #f87171;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.5;
}

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  width: 100%;
  max-width: 420px;
}
.login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--gold);
  color: #0b0e17;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 18px;
}
.login-brand h2 { margin: 0; font-size: 19px; }

.admin-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
@media (max-width: 900px) {
  .admin-layout { grid-template-columns: 1fr; }
}

.sidebar {
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.side-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px 18px;
  border-bottom: 1px solid var(--border);
}
.side-brand strong { display: block; font-size: 16px; }
.side-brand small { color: var(--muted); font-size: 11.5px; }

.sidenav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 16px;
  flex: 1;
}
.sidenav-btn {
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
  border-radius: 9px;
  padding: 10px 12px;
  text-align: left;
  font-size: 13.5px;
  cursor: pointer;
}
.sidenav-btn:hover {
  background: var(--bg-elev);
  color: var(--text);
}
.sidenav-btn.active {
  background: var(--gold);
  color: #0b0e17;
  font-weight: 700;
}

.side-foot {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.content-area {
  padding: 26px 30px;
  overflow-y: auto;
}
.admin-sec { display: none; }
.admin-sec.active { display: block; }

.sec-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.sec-head h1 { margin: 0; font-size: 22px; }
.muted { color: var(--muted); font-size: 13px; margin: 2px 0 0; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 18px;
}
.card h3 { margin: 0 0 12px; font-size: 16px; }
.card h4 { margin: 8px 0 10px; font-size: 14px; color: var(--gold); }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(195px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}
.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 15px;
}
.kpi-card .lbl { font-size: 12px; color: var(--muted); }
.kpi-card .val { font-size: 24px; font-weight: 800; color: var(--gold); margin-top: 4px; }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 960px) {
  .grid-2 { grid-template-columns: 1fr; }
}

.filter-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.input {
  width: 100%;
  background: #0d1220;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13.5px;
}
.stack-form label { display: block; margin-bottom: 10px; }
.stack-form label span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }

.btn {
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.btn.small { padding: 5px 10px; font-size: 12px; }
.btn.full { width: 100%; }
.btn.primary { background: var(--primary); color: #fff; }
.btn.gold { background: var(--gold); color: #0b0e17; }
.btn.ghost { background: var(--bg-elev); color: var(--text); border-color: var(--border); }
.btn.danger { background: rgba(248,113,113,0.18); color: var(--red); border-color: rgba(248,113,113,0.4); }
.btn-row { display: flex; gap: 6px; flex-wrap: wrap; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th, .data-table td {
  padding: 9px 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.data-table th {
  color: var(--muted);
  font-size: 12px;
  background: var(--bg-elev);
}
.pill-status {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
}
.pill-status.ok { background: rgba(52,211,153,0.18); color: var(--green); }
.pill-status.warn { background: rgba(229,184,105,0.18); color: var(--gold); }
.pill-status.err { background: rgba(248,113,113,0.18); color: var(--red); }

.svg-chart-box {
  width: 100%;
  overflow-x: auto;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 12, 0.78);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 100%;
  max-width: 520px;
  padding: 22px;
}
.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.close-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 24px;
  cursor: pointer;
}
.err-msg { color: var(--red); font-size: 13px; margin-bottom: 8px; }