:root {
  --bg: #0b1020;
  --panel: #141a2e;
  --panel-2: #1b2340;
  --border: #2a3358;
  --text: #e7ecf7;
  --muted: #8d9ab5;
  --ok: #32c48d;
  --bad: #ff5d6b;
  --warn: #ffb347;
  --accent: #6aa7ff;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #0f1530, #0b1020);
}
header.topbar .brand { font-weight: 700; letter-spacing: 1px; }
header.topbar .brand small { color: var(--muted); font-weight: 400; margin-left: 10px; }
header.topbar nav a { margin-right: 16px; color: var(--muted); }
header.topbar nav a.active, header.topbar nav a:hover { color: var(--text); }
header.topbar .user { color: var(--muted); }
header.topbar form.logout { display: inline; margin-left: 12px; }
header.topbar form.logout button {
  background: transparent; color: var(--muted); border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 6px; cursor: pointer;
}

main { padding: 20px; max-width: 1200px; margin: 0 auto; }

h1 { font-size: 20px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 24px 0 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .08em; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}
.tile {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  display: block;
  color: inherit;
}
.tile:hover { border-color: var(--accent); text-decoration: none; }
.tile .row { display: flex; justify-content: space-between; align-items: center; }
.tile .label { font-weight: 600; font-size: 15px; }
.tile .url { color: var(--muted); font-size: 12px; margin-top: 2px; word-break: break-all; }
.tile .dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-right: 8px; }
.tile .dot.ok  { background: var(--ok);  box-shadow: 0 0 10px rgba(50,196,141,.6); }
.tile .dot.bad { background: var(--bad); box-shadow: 0 0 10px rgba(255,93,107,.6); }
.tile .dot.unk { background: var(--muted); }
.tile .meta { display: flex; justify-content: space-between; margin-top: 10px; font-size: 12px; color: var(--muted); }
.tile .meta b { color: var(--text); font-weight: 600; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}
.panel h3 { margin: 0 0 10px; font-size: 14px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; text-transform: uppercase; font-size: 11px; letter-spacing: .08em; }
tr:last-child td { border-bottom: none; }

.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.pill.ok   { background: rgba(50,196,141,.15); color: var(--ok); }
.pill.bad  { background: rgba(255,93,107,.15); color: var(--bad); }
.pill.warn { background: rgba(255,179,71,.15); color: var(--warn); }
.pill.muted{ background: rgba(141,154,181,.15); color: var(--muted); }

.chart-wrap { position: relative; height: 220px; }
.range-tabs { display: flex; gap: 6px; margin-bottom: 10px; }
.range-tabs button {
  background: var(--panel-2); color: var(--muted); border: 1px solid var(--border);
  padding: 5px 12px; border-radius: 6px; cursor: pointer; font-size: 12px;
}
.range-tabs button.active { background: var(--accent); color: #0b1020; border-color: var(--accent); }

/* Login */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  width: 360px;
}
.login-card h1 { font-size: 22px; margin-bottom: 6px; }
.login-card p.sub { color: var(--muted); margin: 0 0 18px; font-size: 13px; }
.login-card label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; margin-top: 10px; }
.login-card input {
  width: 100%; padding: 10px 12px; border-radius: 8px;
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--border); font-size: 14px;
}
.login-card button {
  width: 100%; margin-top: 16px; padding: 10px; border-radius: 8px;
  background: var(--accent); color: #0b1020; border: none; font-weight: 700; cursor: pointer;
}
.login-card .err { color: var(--bad); font-size: 12px; margin-top: 8px; }