:root {
  --bg: #f4f5f7; --surface: #ffffff; --text: #16181d; --muted: #5d6470; --line: #dfe2e7;
  --ok: #1f8a4c; --ok-bg: #e6f4ec; --warn: #9a6200; --warn-bg: #fdf1dc;
  --down: #c62828; --down-bg: #fde8e8; --nodata: #5d6470; --nodata-bg: #eceef1;
  --accent: #2856d6; --radius: 10px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --surface: #181b21; --text: #e8eaee; --muted: #9aa1ad; --line: #2a2f38;
    --ok: #4cc37f; --ok-bg: #12261b; --warn: #f0b545; --warn-bg: #2b2210;
    --down: #ff6b6b; --down-bg: #331516; --nodata: #9aa1ad; --nodata-bg: #22262e;
    --accent: #7aa2ff; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.45; }
a { color: var(--accent); }
main { max-width: 1200px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.4rem; margin: .5rem 0 1rem; }
h2 { font-size: 1rem; margin: 1.5rem 0 .6rem; color: var(--muted); font-weight: 600; letter-spacing: .02em; }
code { font-size: .85em; color: var(--muted); }
button, input { font: inherit; }
button { background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: .5rem .9rem; cursor: pointer; min-height: 40px; }
button.secundario { background: transparent; color: var(--text); border: 1px solid var(--line); }
button.perigo { background: transparent; color: var(--down); border: 1px solid var(--down); }
input:not([type=checkbox]) { background: var(--surface); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: .5rem .7rem; min-height: 40px; width: 100%; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.top { display: flex; align-items: center; gap: 12px; padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
.top nav { display: flex; gap: 14px; flex: 1; overflow-x: auto; }
.top nav a { color: var(--muted); text-decoration: none; white-space: nowrap; }
.top nav a:hover { color: var(--text); }
.logout button { background: none; color: var(--muted); padding: 0; min-height: 0; }

.center main { min-height: 100vh; display: grid; place-items: center; }
.login { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; width: min(360px, 100%); display: grid; gap: 14px; }
.login h1 { margin: 0; }
label { display: grid; gap: 4px; color: var(--muted); font-size: .9rem; }
label.check, .grupos label, .som { display: flex; align-items: center; gap: 8px; color: var(--text); }
.erro { color: var(--down); margin: 0; }
.aviso { background: var(--warn-bg); border-radius: var(--radius); padding: 10px 14px; }
.vazio { color: var(--muted); }

.barra { display: flex; justify-content: flex-end; margin-bottom: 8px; }
.som { font-size: .9rem; color: var(--muted); }
.resumo { border-radius: var(--radius); padding: 12px 16px; display: flex; gap: 16px; flex-wrap: wrap; font-weight: 600; }
.resumo.tudo-ok { background: var(--ok-bg); color: var(--ok); }
.resumo.tem-atencao { background: var(--warn-bg); color: var(--warn); }
.resumo.tem-fora { background: var(--down); color: #fff; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 10px; }
.card { display: grid; gap: 2px; padding: 12px 14px; background: var(--surface); border: 1px solid var(--line); border-left: 5px solid var(--nodata); border-radius: var(--radius); color: var(--text); text-decoration: none; min-height: 84px; }
.card:hover { border-color: var(--muted); }
.card .nome { font-weight: 600; }
.card .estado { font-size: .85rem; font-weight: 700; }
.card .resumo-item, .card .desde { font-size: .8rem; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card.st-ok { border-left-color: var(--ok); } .card.st-ok .estado { color: var(--ok); }
.card.st-warn { border-left-color: var(--warn); background: var(--warn-bg); } .card.st-warn .estado { color: var(--warn); }
.card.st-down { border-left-color: var(--down); background: var(--down-bg); } .card.st-down .estado { color: var(--down); }
.card.st-nodata .estado { color: var(--nodata); }

.pill { font-size: .8rem; padding: 2px 10px; border-radius: 99px; vertical-align: middle; }
.pill.st-ok { background: var(--ok-bg); color: var(--ok); }
.pill.st-warn { background: var(--warn-bg); color: var(--warn); }
.pill.st-down { background: var(--down); color: #fff; }
.pill.st-nodata { background: var(--nodata-bg); color: var(--nodata); }
.sub { color: var(--muted); margin-top: -.5rem; }
.voltar { margin: 0; }
.faixa { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin: 8px 0; }
.faixa button { background: transparent; color: var(--muted); border-radius: 0; min-height: 34px; }
.faixa button.ativo { background: var(--accent); color: #fff; }
.grafico { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px; height: 260px; }
.tabela { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: var(--radius); overflow: hidden; }
.tabela th, .tabela td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tabela th { color: var(--muted); font-weight: 600; font-size: .85rem; }
pre { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 10px; overflow-x: auto; font-size: .8rem; }
pre.token { user-select: all; word-break: break-all; white-space: pre-wrap; }
details { margin-top: 1.5rem; }

.admin-nav { display: flex; gap: 14px; margin-bottom: 8px; }
.usuario { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 14px 14px; margin-bottom: 12px; }
.usuario h2 { color: var(--text); }
.usuario small { color: var(--muted); font-weight: 400; margin-left: 6px; }
.grupos { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 6px 14px; }
.grupos button { grid-column: 1 / -1; justify-self: start; margin-top: 6px; }
.acoes { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.acoes form { display: flex; gap: 8px; }
.novo { display: grid; gap: 10px; max-width: 420px; }
.inativo { opacity: .55; }

/* Modo TV (Raspberry): só os cards, grandes */
.tv main { max-width: none; padding: 12px; }
.tv .top { display: none; }
.tv .resumo { font-size: 1.6rem; }
.tv .cards { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.tv .card { min-height: 110px; }
.tv .card .nome { font-size: 1.3rem; }
.tv .card .estado { font-size: 1.1rem; }
.relogio { color: var(--muted); text-align: right; margin: 8px 0 0; }

@media (max-width: 600px) {
  .top nav { order: 3; flex-basis: 100%; }
  .logout { margin-left: auto; }
}
@media (max-width: 480px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .card { min-height: 76px; padding: 10px; }
  .acoes form { flex-wrap: wrap; }
}