:root {
  --bg: #f4f5f7; --card: #ffffff; --texto: #1d2129; --sutil: #6b7280; --borda: #e2e5ea;
  --primaria: #2563eb; --perigo: #dc2626; --ok: #16a34a; --alerta: #d97706;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111317; --card: #1b1e24; --texto: #e7e9ee; --sutil: #9aa1ad; --borda: #2c313a;
          --primaria: #3b82f6; --perigo: #ef4444; --ok: #22c55e; --alerta: #f59e0b; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--texto);
       font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
h1 { font-size: 1.15rem; margin: 0; }
h2 { font-size: .95rem; margin: 0 0 .75rem; text-transform: uppercase; letter-spacing: .04em; color: var(--sutil); }
h2 small { text-transform: none; letter-spacing: 0; }

.topo { display: flex; align-items: center; gap: .75rem; padding: .75rem 16px;
        background: var(--card); border-bottom: 1px solid var(--borda); position: sticky; top: 0; z-index: 2; }
.topo h1 { flex: 1; }

.grid { display: grid; gap: 16px; padding: 16px; max-width: 1200px; margin: 0 auto;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--borda); border-radius: 12px; padding: 16px; min-width: 0; }
.largo { grid-column: 1 / -1; }

.btn { font: inherit; padding: .5rem .9rem; border-radius: 8px; border: 1px solid var(--borda);
       background: var(--card); color: var(--texto); cursor: pointer; }
.btn:hover { filter: brightness(.96); }
.btn:disabled { opacity: .5; cursor: wait; }
.btn.primary { background: var(--primaria); border-color: var(--primaria); color: #fff; }
.btn.danger { background: var(--perigo); border-color: var(--perigo); color: #fff; }
.btn.ghost { background: transparent; }

.pill { font-size: .8rem; padding: .2rem .6rem; border-radius: 999px; border: 1px solid var(--borda); color: var(--sutil); }
.pill.on { color: var(--ok); border-color: var(--ok); }
.pill.off { color: var(--perigo); border-color: var(--perigo); }

.estado { display: flex; align-items: center; gap: .5rem; font-weight: 600; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--borda); }
.dot.live, .dot.rec { background: var(--perigo); box-shadow: 0 0 0 4px color-mix(in srgb, var(--perigo) 25%, transparent); }
.dot.warn { background: var(--alerta); }
.tempo { font: 600 2rem/1.2 ui-monospace, Consolas, monospace; margin: .4rem 0 .8rem; font-variant-numeric: tabular-nums; }
.acoes { display: flex; flex-wrap: wrap; gap: .5rem; }
.meta { color: var(--sutil); font-size: .85rem; margin: .6rem 0 0; }

.stats { display: grid; grid-template-columns: 1fr auto; gap: .35rem 1rem; margin: 0; }
.stats dt { color: var(--sutil); }
.stats dd { margin: 0; font-variant-numeric: tabular-nums; font-weight: 600; text-align: right; }

.cenas { display: grid; gap: .5rem; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.btn.cena { padding: .9rem .6rem; text-align: center; overflow-wrap: anywhere; }
.btn.cena.ativa { border-color: var(--perigo); box-shadow: inset 0 0 0 2px var(--perigo); font-weight: 600; }

.lista { list-style: none; margin: 0; padding: 0; display: grid; gap: .35rem; }
.linha { display: flex; align-items: center; gap: .6rem; justify-content: space-between; min-width: 0; }
.linha span, .linha strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
label.linha { justify-content: flex-start; cursor: pointer; }
.audio-item { padding: .5rem 0; border-bottom: 1px solid var(--borda); }
.audio-item:last-child { border-bottom: 0; }
.audio-item input[type=range] { flex: 1; min-width: 0; }
.db { font-variant-numeric: tabular-nums; color: var(--sutil); font-size: .85rem; min-width: 4.5rem; text-align: right; }
.btn.mute { padding: .25rem .6rem; font-size: .85rem; }
.btn.mute.mudo { background: var(--perigo); border-color: var(--perigo); color: #fff; }

.aviso { position: fixed; left: 50%; bottom: 16px; transform: translate(-50%, 150%); transition: transform .2s, visibility .2s; visibility: hidden;
         background: var(--texto); color: var(--bg); padding: .6rem 1rem; border-radius: 8px; max-width: calc(100% - 32px); }
.aviso.visivel { transform: translate(-50%, 0); visibility: visible; }
.aviso.erro { background: var(--perigo); color: #fff; }

.login-body { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.login-card { width: 100%; max-width: 360px; display: grid; gap: .9rem; }
.login-card label { display: grid; gap: .3rem; color: var(--sutil); font-size: .9rem; }
.login-card input { font: inherit; padding: .6rem; border-radius: 8px; border: 1px solid var(--borda);
                    background: var(--bg); color: var(--texto); }
.erro { color: var(--perigo); min-height: 1.2em; margin: 0; }