/* ========================================================================
   Sistema Central - estilo base (dark, moderno, compacto)
   ======================================================================== */

:root {
  --bg: #0f1115;
  --bg-2: #151923;
  --bg-3: #1c2230;
  --bg-4: #232b3d;
  --borda: #2a3349;
  --borda-suave: #222a3b;
  --txt: #e6e9f2;
  --txt-2: #a8b0c2;
  --txt-3: #6b7590;
  --azul: #4c82ff;
  --azul-2: #6a9bff;
  --verde: #22c55e;
  --verde-fraco: #166534;
  --amarelo: #eab308;
  --vermelho: #ef4444;
  --cinza: #64748b;
  --sombra: 0 6px 24px rgba(0, 0, 0, 0.35);
  --raio: 10px;
  --raio-sm: 6px;
  --sidebar-w: 280px;
  --topo-h: 92px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  height: 100%;
}

body { display: flex; min-height: 100vh; }

a { color: var(--azul-2); text-decoration: none; }
a:hover { color: var(--azul); }

/* ============================== SIDEBAR ============================== */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-2);
  border-right: 1px solid var(--borda);
  padding: 18px 12px 12px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  flex-shrink: 0;
}

.brand { padding: 0 6px 16px; border-bottom: 1px solid var(--borda-suave); margin-bottom: 12px; }
.brand-link { display: flex; gap: 10px; align-items: center; color: var(--txt); }
.brand-link:hover { color: var(--txt); }
.brand-mark {
  width: 36px; height: 36px; border-radius: 8px;
  background: linear-gradient(135deg, #4c82ff, #8b5cf6);
  display: grid; place-items: center;
  color: #fff; font-weight: 700; font-size: 13px; letter-spacing: .5px;
}
.brand-title { font-weight: 700; font-size: 14px; }
.brand-sub { color: var(--txt-3); font-size: 11px; text-transform: uppercase; letter-spacing: .6px; }

.nav { flex: 1; overflow-y: auto; padding-right: 2px; }
.nav::-webkit-scrollbar { width: 6px; }
.nav::-webkit-scrollbar-thumb { background: #2a3349; border-radius: 3px; }

.nav-area { margin: 14px 0 6px; }
.nav-area-titulo {
  padding: 4px 10px; color: var(--txt-3);
  font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .8px;
}

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; margin: 1px 0;
  color: var(--txt-2); border-radius: 7px;
  font-size: 13px; transition: background .12s, color .12s;
  position: relative;
}
.nav-item:hover { background: var(--bg-3); color: var(--txt); }
.nav-item--ativo {
  background: var(--bg-4); color: var(--txt);
  box-shadow: inset 2px 0 0 var(--azul);
}
.nav-item-icone {
  width: 28px; height: 22px; display: grid; place-items: center;
  background: var(--bg-3); border-radius: 5px;
  font-size: 10px; font-weight: 700; color: var(--txt-2);
  letter-spacing: .4px;
}
.nav-item--ativo .nav-item-icone { background: var(--azul); color: #fff; }
.nav-item-label { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav-item-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--cinza); flex-shrink: 0;
  box-shadow: 0 0 0 2px rgba(100, 116, 139, .15);
}
.nav-item-dot.dot-on { background: var(--verde); box-shadow: 0 0 0 2px rgba(34, 197, 94, .2); }
.nav-item-dot.dot-off { background: var(--cinza); }
.nav-item-dot.dot-warn { background: var(--amarelo); box-shadow: 0 0 0 2px rgba(234, 179, 8, .2); }

.sidebar-rodape {
  border-top: 1px solid var(--borda-suave);
  padding-top: 10px; margin-top: 10px;
  display: flex; flex-direction: column; gap: 8px;
}
.versao { color: var(--txt-3); font-size: 11px; text-align: center; }

/* ============================== MAIN ============================== */
.main {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column;
}

/* ============================== INICIO (cards) ============================== */
.pagina-inicio { padding: 32px 40px 60px; max-width: 1280px; width: 100%; }
.inicio-cabecalho { margin-bottom: 28px; }
.inicio-cabecalho h1 { margin: 0 0 6px; font-size: 26px; }
.subtitulo { color: var(--txt-2); margin: 0; max-width: 720px; }

.area-bloco { margin-bottom: 36px; }
.area-cabecalho {
  display: flex; gap: 14px; align-items: center;
  margin-bottom: 14px;
}
.area-icone {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--bg-3); color: var(--txt);
  display: grid; place-items: center;
  font-weight: 700; font-size: 11px; letter-spacing: .5px;
}
.area-cabecalho h2 { margin: 0 0 2px; font-size: 18px; }
.area-cabecalho p { margin: 0; color: var(--txt-2); font-size: 13px; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}
.card {
  background: var(--bg-2); border: 1px solid var(--borda-suave);
  border-radius: var(--raio);
  padding: 16px; display: flex; flex-direction: column; gap: 10px;
  color: var(--txt); transition: transform .1s, border-color .15s, background .15s;
}
.card:hover {
  background: var(--bg-3);
  border-color: var(--borda);
  transform: translateY(-1px);
  color: var(--txt);
}
.card-topo { display: flex; justify-content: space-between; align-items: center; }
.card-icone {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--bg-3); color: var(--txt);
  display: grid; place-items: center;
  font-weight: 700; font-size: 11px; letter-spacing: .4px;
}
.card-corpo h3 { margin: 4px 0 4px; font-size: 15px; }
.card-corpo p { margin: 0; color: var(--txt-2); font-size: 12.5px; }
.card-rodape {
  display: flex; justify-content: space-between;
  margin-top: auto; padding-top: 6px;
  color: var(--txt-3); font-size: 12px;
}
.card-abrir { color: var(--azul-2); }

/* ============================== STATUS PILL ============================== */
.status-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px; border-radius: 999px;
  background: var(--bg-3); border: 1px solid var(--borda-suave);
  color: var(--txt-2); font-size: 11px;
}
.status-pill-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cinza);
}
.status-pill.on { color: var(--verde); }
.status-pill.on .status-pill-dot { background: var(--verde); }
.status-pill.off { color: var(--txt-3); }
.status-pill.off .status-pill-dot { background: var(--cinza); }
.status-pill.warn { color: var(--amarelo); }
.status-pill.warn .status-pill-dot { background: var(--amarelo); }

/* ============================== MODULO (iframe) ============================== */
body.pagina-modulo .main { height: 100vh; overflow: hidden; }

.modulo-topo {
  padding: 14px 22px;
  border-bottom: 1px solid var(--borda);
  background: var(--bg-2);
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.modulo-topo h1 { margin: 2px 0 0; font-size: 16px; }
.modulo-topo .subtitulo { font-size: 12px; margin-top: 2px; max-width: 820px; }
.breadcrumb { color: var(--txt-3); font-size: 11.5px; display: flex; gap: 6px; align-items: center; }
.breadcrumb a { color: var(--txt-3); }
.breadcrumb strong { color: var(--txt-2); font-weight: 600; }
.modulo-topo-acoes { display: flex; gap: 8px; align-items: center; }

.modulo-corpo {
  flex: 1;
  position: relative;
  background: var(--bg);
  display: flex;
}
.modulo-frame {
  flex: 1;
  width: 100%; height: 100%;
  border: 0;
  background: #fff;
}

.modulo-carregando, .modulo-erro {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  gap: 16px; background: var(--bg);
  padding: 40px;
  z-index: 2;
}
.modulo-carregando { flex-direction: row; }
.modulo-erro { flex-direction: row; }

/* Respeita o atributo `hidden` (o display: flex acima o sobrescrevia). */
.modulo-carregando[hidden], .modulo-erro[hidden], .modulo-frame[hidden] {
  display: none !important;
}
.carregando-texto strong, .modulo-erro strong { display: block; font-size: 15px; }
.carregando-texto p, .modulo-erro p { margin: 4px 0 10px; color: var(--txt-2); max-width: 420px; }

.spinner {
  width: 28px; height: 28px; border-radius: 50%;
  border: 3px solid var(--borda);
  border-top-color: var(--azul);
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.erro-icone {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(239, 68, 68, .15);
  color: var(--vermelho);
  font-weight: 900; font-size: 20px;
  display: grid; place-items: center;
}

/* ============================== BOTOES ============================== */
.btn {
  background: var(--azul); color: #fff; border: 0;
  padding: 7px 14px; border-radius: var(--raio-sm);
  font-size: 12.5px; font-weight: 600; cursor: pointer;
  transition: background .12s;
  text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
}
.btn:hover { background: var(--azul-2); color: #fff; }
.btn-sutil {
  background: var(--bg-3); color: var(--txt-2);
  border: 1px solid var(--borda-suave);
}
.btn-sutil:hover { background: var(--bg-4); color: var(--txt); }
.btn-perigo { background: rgba(239, 68, 68, .12); color: var(--vermelho); border: 1px solid rgba(239, 68, 68, .25); }
.btn-perigo:hover { background: rgba(239, 68, 68, .25); color: var(--vermelho); }
.btn-bloco { width: 100%; justify-content: center; }

/* ============================== RESPONSIVO ============================== */
@media (max-width: 900px) {
  :root { --sidebar-w: 72px; }
  .brand-text, .nav-area-titulo, .nav-item-label { display: none; }
  .nav-item { justify-content: center; padding: 10px 6px; }
  .nav-item-dot { position: absolute; top: 6px; right: 6px; }
  .sidebar-rodape .btn { font-size: 10px; padding: 6px 4px; }
  .versao { display: none; }
  .pagina-inicio { padding: 22px; }
  .modulo-topo { padding: 12px 16px; flex-direction: column; align-items: flex-start; }
}