:root {
  --bg: #0d1117;
  --card: #161b22;
  --card-hover: #1c232c;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --danger: #f85149;
  --ok: #3fb950;
}
* , *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg); color: var(--text); min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 40px 24px 80px; }

/* login */
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card {
  width: 100%; max-width: 360px; background: var(--card);
  border: 1px solid var(--border); border-radius: 12px; padding: 28px;
}
.login-card h1 { font-size: 20px; margin: 0 0 4px; }
.login-card p.sub { color: var(--muted); margin: 0 0 20px; font-size: 13px; }
label { display: block; font-size: 13px; color: var(--muted); margin: 14px 0 6px; }
input[type=text], input[type=password], input[type=search], select {
  width: 100%; padding: 9px 11px; background: #0d1117; color: var(--text);
  border: 1px solid var(--border); border-radius: 7px; font-size: 14px;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }
button, .btn {
  display: inline-block; margin-top: 18px; padding: 9px 16px; font-size: 14px;
  font-weight: 600; color: #fff; background: #238636; border: 1px solid #2ea043;
  border-radius: 7px; cursor: pointer;
}
button:hover, .btn:hover { background: #2ea043; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--card-hover); }
.btn-danger { background: #b62324; border-color: var(--danger); }
.btn-sm { padding: 4px 10px; font-size: 12px; margin-top: 0; }
.err { color: var(--danger); font-size: 13px; margin: 12px 0 0; }
.ok  { color: var(--ok); font-size: 13px; margin: 12px 0 0; }

/* admin */
header.topbar {
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border); padding-bottom: 14px; margin-bottom: 24px;
}
header.topbar h1 { font-size: 20px; margin: 0; }
header.topbar nav a { margin-left: 16px; font-size: 14px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
tr:hover td { background: var(--card); }
.tag { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px;
  border: 1px solid var(--border); color: var(--muted); }
.tag.admin { color: #d2a8ff; border-color: #6e40c9; }
.tag.on  { color: var(--ok);     border-color: #238636; }
.tag.off { color: var(--danger); border-color: #b62324; }
.grid-form { display: grid; grid-template-columns: 180px 1fr; gap: 12px 18px; align-items: center; }
.matrix th, .matrix td { text-align: center; }
.matrix td:first-child, .matrix th:first-child { text-align: left; }
.muted { color: var(--muted); }
.section { margin: 28px 0; }
.section h2 { font-size: 14px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted);
  border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 18px; font-size: 14px; }
.flash.ok  { background: rgba(63,185,80,.12);  border: 1px solid #238636; color: #aff5b4; }
.flash.err { background: rgba(248,81,73,.12);  border: 1px solid #b62324; color: #ffb8b0; }