:root {
  --bg: #0f1219;
  --panel: #171c27;
  --line: #2a3348;
  --text: #e8ecf5;
  --muted: #8b95ab;
  --accent: #6c5ce7;
  --ok: #3dd68c;
  --bad: #ff6b6b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: #9ec1ff; text-decoration: none; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: #12161f;
}
.topbar nav a { margin-left: 14px; color: var(--muted); }
.topbar nav a.active { color: #fff; }
.brand { font-weight: 700; }
.main { padding: 16px; max-width: 1200px; margin: 0 auto; }
.page-head { display: flex; align-items: center; gap: 12px; }
.muted { color: var(--muted); font-size: 0.9rem; }
.flash {
  background: #2a2140;
  border: 1px solid #5b4a8a;
  padding: 8px 12px;
  border-radius: 8px;
  margin-bottom: 12px;
}
.login-card {
  max-width: 360px;
  margin: 10vh auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
}
.stack label, .form-grid label { display: block; margin: 8px 0; }
input[type="text"], input[type="password"], input:not([type]) {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #0d1017;
  color: var(--text);
}
button, .btn {
  display: inline-block;
  margin-top: 8px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 0;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
.btn-danger { background: #8b3a3a; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  margin: 14px 0;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
  align-items: end;
}
.check { display: flex !important; align-items: center; gap: 8px; }
.inst-row { margin: 10px 0; border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
}
.card .status-on { color: var(--ok); }
.card .status-off { color: var(--bad); }
.card table { width: 100%; font-size: 0.8rem; border-collapse: collapse; }
.card td, .card th { border-bottom: 1px solid var(--line); padding: 4px 2px; text-align: left; }
.desk { display: grid; grid-template-columns: 200px 1fr; gap: 12px; min-height: 70vh; max-width: none; }
.desk-side {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
}
.desk-list { list-style: none; padding: 0; margin: 0; }
.desk-list li { margin: 6px 0; }
.desk-list li.active a { color: #fff; font-weight: 600; }
.desk-main { display: flex; flex-direction: column; min-height: 70vh; }
.desk-toolbar {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  margin-bottom: 8px;
}
.desk-frame {
  flex: 1;
  width: 100%;
  min-height: 65vh;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #000;
}
.empty { padding: 40px; color: var(--muted); }
@media (max-width: 800px) {
  .desk { grid-template-columns: 1fr; }
}