:root {
  color-scheme: dark;
  --bg: #070b14;
  --bg-elevated: #0e1526;
  --panel: #121c31;
  --panel-hover: #162038;
  --border: #24304d;
  --text: #e8eefc;
  --muted: #8fa3c7;
  --accent: #5b8cff;
  --accent-dim: rgba(91, 140, 255, 0.15);
  --dns: #34d399;
  --dns-dim: rgba(52, 211, 153, 0.12);
  --conn: #38bdf8;
  --conn-dim: rgba(56, 189, 248, 0.12);
  --warn: #fbbf24;
  --radius: 14px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #0e1526 0%, var(--bg) 100%);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
}
.brand h1 { margin: 0; font-size: 1.15rem; font-weight: 700; letter-spacing: -0.02em; }
.brand p { margin: .15rem 0 0; color: var(--muted); font-size: .82rem; }
.nav { display: flex; gap: .35rem; }
.nav a {
  padding: .45rem .85rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: .88rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}
.nav a.active {
  color: var(--text);
  background: var(--accent-dim);
  border-color: rgba(91, 140, 255, 0.35);
}
.nav a:hover:not(.active) { background: var(--panel); color: var(--text); text-decoration: none; }

main { max-width: 1280px; margin: 0 auto; padding: 1.25rem 1.5rem 2.5rem; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: .75rem;
  margin-bottom: 1rem;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .95rem 1.05rem;
  box-shadow: var(--shadow);
}
.card .label { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
.card .value { font-size: 1.65rem; font-weight: 800; margin-top: .15rem; letter-spacing: -0.03em; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: end;
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.toolbar label {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  font-size: .78rem;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
}
input, select, button {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .55rem .75rem;
  font: inherit;
}
input:focus, select:focus { outline: 2px solid rgba(91, 140, 255, 0.45); border-color: var(--accent); }
button {
  cursor: pointer;
  background: var(--accent);
  border-color: transparent;
  color: #fff;
  font-weight: 700;
  padding: .6rem 1rem;
}
button.secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
button.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
  font-weight: 600;
}
button:hover { filter: brightness(1.08); }

.filter-bar { padding: 1rem; margin-bottom: .85rem; }
.filter-row.primary {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: end;
}
.filter-row label { flex: 1 1 140px; min-width: 120px; }
.filter-actions { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.preset-row { margin-top: .85rem; display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.preset-label { font-size: .78rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: .65rem;
  margin-top: .85rem;
}
.advanced-panel { border-top: 1px solid var(--border); margin-top: .85rem; padding-top: .85rem; }
.filter-hint { margin: .65rem 0 0; font-size: .8rem; color: var(--muted); }
.filter-hint code { background: var(--bg-elevated); padding: .1rem .35rem; border-radius: 4px; }
.loading {
  text-align: center;
  color: var(--muted);
  padding: .5rem;
  font-size: .85rem;
}
.chip.preset.active { background: var(--conn-dim); border-color: rgba(56,189,248,.4); color: var(--conn); }

.chips { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: 1rem; }
.chip {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--muted);
  border-radius: 999px;
  padding: .35rem .75rem;
  font-size: .82rem;
  cursor: pointer;
  font-weight: 600;
}
.chip.active { background: var(--accent-dim); color: var(--text); border-color: rgba(91,140,255,.4); }

.tabs { display: flex; gap: .5rem; margin-bottom: 1rem; }
.tab {
  padding: .55rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-weight: 700;
  cursor: pointer;
}
.tab.active { background: var(--panel); color: var(--text); border-color: rgba(91,140,255,.35); }

.flow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: .85rem;
}
.flow-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.05rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: .85rem;
  align-items: start;
  transition: border-color .15s, background .15s;
}
.flow-card:hover { background: var(--panel-hover); border-color: rgba(91,140, 255, 0.35); }
.flow-flag { font-size: 1.75rem; line-height: 1; margin-top: .1rem; }
.flow-main h3 {
  margin: 0 0 .25rem;
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
}
.flow-main .dest { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .92rem; }
.flow-meta { color: var(--muted); font-size: .82rem; margin-top: .35rem; }
.flow-meta div { margin-top: .15rem; }
.flow-side { text-align: right; min-width: 72px; }
.flow-side .hits { font-size: 1.25rem; font-weight: 800; color: var(--conn); }
.flow-side .time { font-size: .75rem; color: var(--muted); margin-top: .2rem; }

.badge {
  display: inline-flex;
  align-items: center;
  padding: .18rem .5rem;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .03em;
}
.badge.service { background: var(--conn-dim); color: var(--conn); }
.badge.peer { background: var(--accent-dim); color: var(--accent); }
.badge.dns { background: var(--dns-dim); color: var(--dns); }
.badge.asn { background: rgba(251, 191, 36, 0.12); color: var(--warn); }

.dns-list { display: flex; flex-direction: column; gap: .65rem; }
.dns-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .75rem;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: .85rem 1rem;
}
.dns-row:hover { border-color: rgba(52, 211, 153, 0.35); }
.dns-domain { font-weight: 700; font-size: .95rem; word-break: break-all; }
.dns-sub { color: var(--muted); font-size: .8rem; margin-top: .25rem; }
.dns-sub span { margin-right: .75rem; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
th, td {
  padding: .65rem .75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  font-size: .88rem;
}
th { color: var(--muted); font-weight: 700; background: var(--bg-elevated); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,.02); }

.empty {
  color: var(--muted);
  padding: 2.5rem 1rem;
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  grid-column: 1 / -1;
}
footer.meta { color: var(--muted); font-size: .82rem; margin-top: 1rem; }
.hidden { display: none !important; }

@media (max-width: 720px) {
  .flow-card { grid-template-columns: 1fr; }
  .flow-side { text-align: left; display: flex; gap: .75rem; align-items: center; }
  .topbar { flex-direction: column; align-items: flex-start; }
}