:root {
  color-scheme: dark;
  --bg: #101218;
  --card: #1b1f2a;
  --line: #2c3344;
  --text: #f3f5f8;
  --muted: #a8b0c0;
  --accent: #c81e3a;
  --ok: #1f9d55;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 28px;
  background: #161922;
  border-bottom: 1px solid var(--line);
}
.brand { color: white; font-weight: 700; text-decoration: none; letter-spacing: 0.02em; }
nav a { color: var(--muted); margin-left: 18px; text-decoration: none; }
nav a:hover { color: white; }
main { max-width: 1080px; margin: 0 auto; padding: 28px; }
h1 { font-size: 1.6rem; margin: 0 0 8px; }
.muted { color: var(--muted); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  margin-top: 16px;
}
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 0.85rem; }
a { color: #8eb6ff; }
label { display: block; margin: 12px 0 6px; color: var(--muted); }
input, textarea, select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #12151c;
  color: var(--text);
}
textarea { min-height: 90px; }
button, .button {
  display: inline-block;
  margin-top: 14px;
  background: var(--accent);
  color: white;
  border: 0;
  border-radius: 8px;
  padding: 10px 16px;
  text-decoration: none;
  cursor: pointer;
}
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.danger { background: transparent; color: #ff8d8d; border: 1px solid #ff8d8d; }
.ok { color: var(--ok); }
@media (max-width: 800px) {
  .row { grid-template-columns: 1fr; }
  .top { padding: 14px; }
  main { padding: 16px; }
}