:root {
  --bg: #f4f5f7; --card: #ffffff; --text: #1b1f24; --text2: #6b7280;
  --border: #e2e4e8; --primary: #2563eb; --primary-d: #1d4ed8;
  --danger: #dc2626; --success: #16a34a; --warn-bg: #fff7ed; --warn-text: #9a3412;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a; --card: #1d2025; --text: #e5e7eb; --text2: #9aa0a8;
    --border: #2b2f36; --primary: #3b82f6; --primary-d: #60a5fa;
    --danger: #f87171; --success: #4ade80; --warn-bg: #2a1f14; --warn-text: #fbbf24;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--card); }
.brand { font-weight: 700; }
.wrap { max-width: 720px; margin: 32px auto; padding: 0 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; margin-bottom: 16px; overflow: hidden; }
.card-hd { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.card-title { font-weight: 600; }
.card-body { padding: 16px 18px; }
.auth-card { max-width: 380px; margin: 60px auto; padding: 24px; }
.auth-card h1 { font-size: 1.3rem; margin: 0 0 16px; }
.fg { margin-bottom: 14px; }
.lbl { display: block; font-size: .8rem; color: var(--text2); margin-bottom: 4px; }
.inp { width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 7px; background: transparent; color: var(--text); font-size: .92rem; }
.btn { border: none; border-radius: 7px; padding: 9px 14px; font-size: .88rem; cursor: pointer; text-decoration: none; display: inline-block; }
.btn-sm { padding: 6px 10px; font-size: .78rem; }
.bp { background: var(--primary); color: #fff; }
.bp:hover { background: var(--primary-d); }
.bg { background: var(--border); color: var(--text); }
.bd { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-row { display: flex; gap: 8px; margin-top: 4px; }
.status { margin-top: 10px; font-size: .82rem; min-height: 1.1em; }
.status.error { color: var(--danger); }
.muted { color: var(--text2); font-size: .85rem; }
.muted a { color: var(--primary); }
.empty { color: var(--text2); font-size: .88rem; padding: 8px 0; }
.empty.error { color: var(--danger); }
.warn-box { background: var(--warn-bg); color: var(--warn-text); border-radius: 7px; padding: 10px 12px; font-size: .82rem; margin-bottom: 14px; }

.device-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); gap: 12px; flex-wrap: wrap; }
.device-row:last-child { border-bottom: none; }
.device-info { display: flex; align-items: center; gap: 10px; }
.device-name { font-weight: 600; font-size: .92rem; }
.device-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.dot-on { background: var(--success); }
.dot-off { background: var(--text2); }

.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: flex; align-items: center; justify-content: center; z-index: 10; }
.modal { background: var(--card); border-radius: 10px; padding: 22px; width: 90%; max-width: 420px; border: 1px solid var(--border); }
.modal h2 { margin: 0 0 16px; font-size: 1.1rem; }