:root {
  --bg: #0f1720;
  --panel: #161f2b;
  --panel-2: #1d2836;
  --border: #2a3746;
  --text: #e7edf3;
  --muted: #8ea0b3;
  --accent: #4f8cff;
  --danger: #ff5d6c;
  --ok: #3ecf8e;
  font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

button, input, select {
  font: inherit;
  color: inherit;
}

button {
  background: var(--accent);
  border: none;
  color: white;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
}
button.secondary { background: var(--panel-2); border: 1px solid var(--border); }
button.danger { background: var(--danger); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

input, select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  padding: 7px 10px;
  border-radius: 6px;
}

.center-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px;
  width: 340px;
}
.auth-card h1 { margin-top: 0; font-size: 20px; }
.auth-card form { display: flex; flex-direction: column; gap: 10px; }
.auth-card .error { color: var(--danger); font-size: 13px; min-height: 16px; }
.auth-card .switch { margin-top: 14px; font-size: 13px; color: var(--muted); cursor: pointer; }

.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 16px;
  display: flex;
  flex-direction: column;
}
.sidebar h2 { font-size: 16px; margin: 0 0 16px; }
.device-item {
  padding: 10px;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.device-item:hover { background: var(--panel-2); }
.device-item.active { background: var(--panel-2); border: 1px solid var(--accent); }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 6px; }
.dot.online { background: var(--ok); }
.dot.offline { background: var(--muted); }
.sidebar .spacer { flex: 1; }

.main { flex: 1; padding: 24px; overflow-y: auto; }
.main h1 { margin-top: 0; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab {
  padding: 10px 16px;
  cursor: pointer;
  color: var(--muted);
  border-bottom: 2px solid transparent;
}
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  margin-bottom: 16px;
}
.card h3 { margin-top: 0; }

.stat-row { display: flex; gap: 16px; flex-wrap: wrap; }
.stat {
  background: var(--panel-2);
  border-radius: 8px;
  padding: 14px 18px;
  min-width: 140px;
}
.stat .value { font-size: 24px; font-weight: 600; }
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }

.form-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 10px; }
.day-toggle { display: flex; gap: 4px; }
.day-toggle span {
  width: 28px; height: 28px; display: flex; align-items: center; justify-content: center;
  border-radius: 5px; background: var(--panel-2); border: 1px solid var(--border); cursor: pointer; font-size: 12px;
}
.day-toggle span.selected { background: var(--accent); border-color: var(--accent); }

.bar-chart { display: flex; align-items: flex-end; gap: 6px; height: 120px; }
.bar-chart .bar { flex: 1; background: var(--accent); border-radius: 3px 3px 0 0; position: relative; }
.bar-chart .bar span { position: absolute; bottom: -18px; left: 0; right: 0; text-align: center; font-size: 10px; color: var(--muted); }

.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; }
.pill.block { background: rgba(255,93,108,0.2); color: var(--danger); }
.pill.allow { background: rgba(62,207,142,0.2); color: var(--ok); }

.muted { color: var(--muted); }
.pairing-code { font-size: 28px; letter-spacing: 4px; font-weight: 700; color: var(--accent); }
.toast {
  position: fixed; bottom: 20px; right: 20px; background: var(--panel-2); border: 1px solid var(--border);
  padding: 10px 16px; border-radius: 8px; font-size: 13px;
}