:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --accent: #0071e3;
  --accent-press: #0064c8;
  --border: #d2d2d7;
  --hairline: #e8e8ed;
  --green: #34c759;
  --gray: #8e8e93;
  --orange: #ff9500;
  --red: #ff3b30;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 1px rgba(0, 0, 0, 0.04);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --text: #f5f5f7;
    --muted: #98989d;
    --border: #38383a;
    --hairline: #2c2c2e;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
  line-height: 1.5;
}

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

/* Top bar ---------------------------------------------------------------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 52px;
  padding: 0 24px;
  background: color-mix(in srgb, var(--card) 80%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 10;
}
.wordmark { font-weight: 600; letter-spacing: -0.01em; font-size: 17px; }
.wordmark .peak { color: var(--accent); }
.topbar nav { display: flex; gap: 20px; }
.topbar nav a { color: var(--muted); font-weight: 500; }
.topbar nav a.active, .topbar nav a:hover { color: var(--text); text-decoration: none; }
.topbar .spacer { flex: 1; }
.topbar .user { color: var(--muted); font-size: 13px; display: flex; align-items: center; gap: 12px; }

/* Layout ----------------------------------------------------------------- */
main { max-width: 960px; margin: 0 auto; padding: 32px 24px 64px; }
h1 { font-size: 28px; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 24px; }
h2 { font-size: 19px; font-weight: 600; margin: 32px 0 12px; }

/* Cards & stats ---------------------------------------------------------- */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--hairline);
}
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.stat { padding: 20px 22px; }
.stat .num { font-size: 34px; font-weight: 600; letter-spacing: -0.02em; }
.stat .label { color: var(--muted); font-size: 13px; margin-top: 2px; }

.callout {
  margin-top: 24px; padding: 16px 20px; display: flex; align-items: center; gap: 14px;
}
.callout .url { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; color: var(--text); }

/* Tables ----------------------------------------------------------------- */
table { width: 100%; border-collapse: collapse; }
.card table { border-radius: var(--radius); overflow: hidden; }
th {
  text-align: left; font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.03em; color: var(--muted); padding: 12px 20px; border-bottom: 1px solid var(--hairline);
}
td { padding: 14px 20px; border-bottom: 1px solid var(--hairline); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
td .sub { color: var(--muted); font-size: 13px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }

.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 7px; vertical-align: middle; }
.dot.on { background: var(--green); }
.dot.off { background: var(--gray); }
.dot.wait { background: var(--orange); }

.empty { padding: 48px; text-align: center; color: var(--muted); }

.tag {
  display: inline-block; font-size: 11px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--muted); background: color-mix(in srgb, var(--gray) 14%, transparent);
  padding: 2px 8px; border-radius: 6px; margin: 1px 0;
}

.callout.error { color: var(--red); }

/* Buttons ---------------------------------------------------------------- */
.btn {
  display: inline-block; border: none; cursor: pointer; font: inherit; font-weight: 500;
  background: var(--accent); color: #fff; padding: 8px 16px; border-radius: 980px;
}
.btn:hover { background: var(--accent-press); text-decoration: none; }
.btn.link { background: none; color: var(--muted); padding: 0; }
.btn.link:hover { color: var(--text); }
.btn.danger { background: var(--red); }
.btn.danger:hover { background: color-mix(in srgb, var(--red) 85%, black); }

/* Login ------------------------------------------------------------------ */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: 100%; max-width: 360px; padding: 36px 32px; text-align: center; }
.login-card .wordmark { font-size: 24px; margin-bottom: 4px; display: block; }
.login-card .tagline { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.login-card label { display: block; text-align: left; font-size: 13px; color: var(--muted); margin: 14px 0 6px; }
.login-card input {
  width: 100%; padding: 11px 13px; font: inherit; border: 1px solid var(--border);
  border-radius: 10px; background: var(--card); color: var(--text);
}
.login-card input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
.login-card .btn { width: 100%; margin-top: 22px; padding: 11px; }
.form-error { background: color-mix(in srgb, #ff3b30 12%, transparent); color: #d70015; border-radius: 10px; padding: 10px 12px; font-size: 13px; margin-bottom: 8px; }