:root {
  color-scheme: dark;
  --bg: #101214;
  --panel: #181d22;
  --panel-2: #20262d;
  --text: #eef3f8;
  --muted: #9aa8b7;
  --line: #303945;
  --accent: #35d0a2;
  --warn: #e4b33d;
  --danger: #f06b6b;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: inherit; text-decoration: none; }
button, input, select {
  font: inherit;
  border-radius: 6px;
  border: 1px solid var(--line);
}
button {
  background: var(--accent);
  color: #07110e;
  border: 0;
  padding: 9px 12px;
  cursor: pointer;
  font-weight: 700;
}
button.secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--line); }
button.danger { background: var(--danger); color: #180606; }
input, select {
  width: 100%;
  background: #0c0f12;
  color: var(--text);
  padding: 9px 10px;
}
label { display: grid; gap: 6px; color: var(--muted); }
.topbar {
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  border-bottom: 1px solid var(--line);
  background: #0d1013;
}
.brand { font-weight: 800; letter-spacing: .04em; text-transform: uppercase; font-size: 13px; }
.topbar nav { display: flex; gap: 16px; color: var(--muted); }
.shell { max-width: 1500px; margin: 0 auto; padding: 24px; }
.dashboard-head { display: flex; align-items: end; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
h1 { margin: 0 0 4px; font-size: 26px; }
p { margin: 0; color: var(--muted); }
.stats { display: flex; gap: 10px; }
.stats span, .toolbar, .panel, .note {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}
.stats strong { color: var(--accent); font-size: 22px; margin-left: 6px; }
.toolbar { margin-bottom: 16px; max-width: 220px; }
.device-grid {
  --columns: auto-fit;
  display: grid;
  grid-template-columns: repeat(var(--columns), minmax(280px, 1fr));
  gap: 14px;
}
.device-grid[data-density="auto"] { --columns: auto-fit; }
.device-grid[data-density="2"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.device-grid[data-density="3"] { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.device-grid[data-density="4"] { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.device-card {
  min-width: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.device-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px;
}
.device-name { font-weight: 800; overflow-wrap: anywhere; }
.status { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); white-space: nowrap; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--danger); }
.online .dot { background: var(--accent); }
.connecting .dot { background: var(--warn); }
.video-wrap {
  position: relative;
  background: #07090b;
  aspect-ratio: 16 / 9;
}
.video-wrap video { width: 100%; height: 100%; object-fit: contain; display: block; }
.placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
}
.card-actions { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px; }
.meta { padding: 0 12px 12px; color: var(--muted); font-size: 13px; }
.fullscreen {
  position: fixed;
  inset: 0;
  z-index: 10;
  background: #020303;
  display: grid;
  grid-template-rows: auto 1fr;
}
.fullscreen.hidden { display: none; }
.fullscreen-bar { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; background: #0d1013; }
.fullscreen video { width: 100%; height: 100%; object-fit: contain; }
.login-body { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-panel, .panel { width: min(420px, 100%); display: grid; gap: 14px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 20px; }
.error { color: var(--danger); }
.data-table { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: 8px; overflow: hidden; }
.data-table th, .data-table td { padding: 11px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.data-table th { color: var(--muted); font-weight: 700; }

@media (max-width: 840px) {
  .topbar, .dashboard-head { align-items: flex-start; flex-direction: column; height: auto; }
  .topbar { padding: 14px; }
  .shell { padding: 14px; }
  .device-grid, .device-grid[data-density] { grid-template-columns: 1fr; }
}