:root {
  --bg: #0f1419;
  --panel: #1a222c;
  --text: #e8eef4;
  --muted: #9aabbc;
  --accent: #2f9e6b;
  --warn: #c45c26;
  --line: #2a3542;
  --font: "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1e3a2f 0%, transparent 50%),
              radial-gradient(900px 500px at 100% 0%, #1a2a3a 0%, transparent 45%),
              var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { color: #7ec8a8; }
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: rgba(15, 20, 25, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
}
.brand { font-weight: 700; text-decoration: none; color: var(--text); letter-spacing: 0.02em; }
nav a { margin-left: 1rem; text-decoration: none; color: var(--muted); }
nav a:hover { color: var(--text); }
.wrap { max-width: 960px; margin: 0 auto; padding: 1.5rem; }
h1 { font-size: 1.75rem; margin: 0 0 0.35rem; }
h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }
.sub { color: var(--muted); margin-top: 0; }
.grid.status {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}
.grid.status > div,
.login-box,
.note {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.25rem;
}
.big { font-size: 2.5rem; font-weight: 700; margin: 0; color: var(--accent); }
.checks { list-style: none; padding: 0; margin: 0; }
.checks li { padding: 0.35rem 0; border-bottom: 1px solid var(--line); }
.checks li.ok::before { content: "● "; color: var(--accent); }
.checks li.no::before { content: "● "; color: var(--warn); }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
th, td {
  text-align: left;
  padding: 0.55rem 0.4rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { color: var(--muted); font-weight: 600; }
label { display: block; margin-bottom: 0.85rem; color: var(--muted); }
input {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #12181f;
  color: var(--text);
}
button {
  background: var(--accent);
  color: #04140c;
  border: 0;
  padding: 0.7rem 1.1rem;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
}
.flash { padding: 0.75rem 1rem; border-radius: 8px; }
.flash.ok { background: #163528; }
.flash.error { background: #3a2218; }
.login-box { max-width: 380px; margin: 4rem auto; }
code { font-size: 0.85em; color: #b7d4c4; }
@media (max-width: 720px) {
  .grid.status { grid-template-columns: 1fr; }
  .top { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  nav a { margin-left: 0; margin-right: 0.75rem; }
}