:root {
  --bg: #0e1116;
  --card: #161b22;
  --card2: #1c2129;
  --text: #e6edf3;
  --muted: #7d8590;
  --ok: #3fb950;
  --warn: #d29922;
  --err: #f85149;
  --acc: #58a6ff;
  --border: #222;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 14px/1.5 -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--acc); text-decoration: none; }
a:hover { text-decoration: underline; }

.topnav {
  display: flex;
  gap: 1rem;
  padding: .75rem 1.5rem;
  background: #0a0d12;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.topnav a { color: var(--text); padding: .25rem .6rem; border-radius: 4px; }
.topnav a:hover { background: var(--card); text-decoration: none; }
.topnav a.active { background: var(--card2); color: var(--acc); }
.topnav .brand { font-weight: 700; color: var(--acc); margin-right: 1rem; }
.topnav .user { color: var(--muted); margin-left: auto; margin-right: .75rem; font-size: .85rem; }
.topnav form { display: inline; }
.topnav button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: .25rem .75rem;
  border-radius: 4px;
  cursor: pointer;
}

main { padding: 1.5rem; max-width: 1280px; margin: 0 auto; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; font-weight: 600; }
h2 { font-size: 1.1rem; margin: 1.5rem 0 .75rem; color: var(--muted); font-weight: 500; }

.hoststats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat {
  background: var(--card);
  padding: 1rem;
  border-radius: 8px;
  text-align: center;
  border: 1px solid var(--border);
}
.stat .label { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; }
.stat .val { display: block; font-size: 1.6rem; font-weight: 600; margin-top: .25rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--card);
  padding: 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--muted);
}
.card.up { border-left-color: var(--ok); }
.card.down { border-left-color: var(--err); }
.card .name { font-weight: 600; font-size: 1.05rem; }
.card .url { font-size: .8rem; word-break: break-all; margin-top: .15rem; }
.card .meta { color: var(--muted); font-size: .8rem; margin-top: .5rem; }
.card .badge {
  display: inline-block;
  padding: .1rem .5rem;
  border-radius: 4px;
  font-size: .75rem;
  margin-left: .5rem;
  background: var(--card2);
  color: var(--muted);
}
.card .badge.up { background: rgba(63,185,80,.15); color: var(--ok); }
.card .badge.down { background: rgba(248,81,73,.15); color: var(--err); }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}
th, td { padding: .65rem .85rem; text-align: left; border-bottom: 1px solid var(--border); }
th { background: #0a0d12; color: var(--muted); font-weight: 500; font-size: .8rem; text-transform: uppercase; }
tr:last-child td { border-bottom: none; }
tr:hover { background: var(--card2); }

.btn {
  background: var(--acc);
  color: #0a0d12;
  border: 0;
  padding: .35rem .85rem;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
  font-size: .85rem;
}
.btn:hover { filter: brightness(1.1); }
.btn.danger { background: var(--err); color: #fff; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }

button.reveal {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--acc);
  padding: .15rem .55rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: .8rem;
}
button.reveal:hover { background: var(--card2); }

.form-row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; margin: .5rem 0; }
input, select, textarea {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  padding: .35rem .65rem;
  border-radius: 4px;
  font: inherit;
}
input:focus, select:focus { outline: 1px solid var(--acc); }

.empty { color: var(--muted); padding: 1rem; text-align: center; }
.err { color: var(--err); }
.ok { color: var(--ok); }

.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 2rem;
  border-radius: 8px;
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.login-card h1 { text-align: center; margin: 0 0 .5rem; color: var(--acc); }
.login-card input { padding: .55rem .75rem; }

footer {
  text-align: center;
  color: var(--muted);
  font-size: .8rem;
  padding: 2rem 1rem 1rem;
}

.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  padding: .75rem 1rem;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,.4);
  z-index: 100;
}
.toast.err { border-left: 4px solid var(--err); }
.toast.ok { border-left: 4px solid var(--ok); }

.muted { color: var(--muted); font-size: .85rem; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }