:root {
  --bg: #0b1220;
  --panel: #111b2d;
  --line: #21314f;
  --text: #e9efff;
  --accent: #22d3ee;
  --topbar-h: 72px;
  --nav-h: 54px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(circle at top, #12213f, var(--bg));
  color: var(--text);
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(11,18,32,.85);
  backdrop-filter: blur(6px);
}
.topbar h1 { margin: 0; font-size: 20px; }
.filters { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.filters label { font-size: 13px; color: #b6c5e5; }
.main-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 10px 20px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 14, 25, 0.95);
  position: sticky;
  top: var(--topbar-h);
  z-index: 25;
  backdrop-filter: blur(6px);
}
.main-nav a {
  text-decoration: none;
  color: #c9d7f3;
  border: 1px solid #2a3f62;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
}
.main-nav a:hover {
  color: #fff;
  border-color: #4d74b7;
  background: #122849;
}
input, button {
  background: #0e1728;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 10px;
}
button { cursor: pointer; border-color: #2a4e86; }
button:hover { background: #13305f; }
.container { padding: 16px; max-width: 1200px; margin: 0 auto; }
.container section { scroll-margin-top: calc(var(--topbar-h) + var(--nav-h) + 16px); }
.grid { display: grid; gap: 12px; }
.kpi-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.two-col { grid-template-columns: repeat(2, minmax(0,1fr)); margin-top: 12px; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}
.card h3 { margin: 0 0 10px; font-size: 15px; color: #b8c8e9; }
.card p { margin: 0; font-size: 24px; font-weight: 700; color: var(--accent); }
.section-placeholder { margin-top: 12px; }
.section-placeholder p { font-size: 14px; font-weight: 400; color: #9db4df; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); }
pre { white-space: pre-wrap; margin: 0; color: #9db4df; }
.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
#trackSelect {
  min-width: 260px;
}
#dailySeriesChart {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0d1524;
}
#chartStatus {
  margin-top: 8px;
  font-size: 12px;
}
.admin-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 8px;
}
.admin-grid label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: #b6c5e5;
}
.admin-grid input,
.admin-grid select {
  width: 100%;
}
.admin-actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
}
#adminStatus {
  margin-top: 10px;
  font-size: 12px;
}
@media (max-width: 920px) {
  .kpi-grid, .two-col { grid-template-columns: 1fr; }
  #trackSelect { min-width: 0; width: 100%; }
  .admin-grid { grid-template-columns: 1fr; }
}