:root {
  --fundo: #f3f6f9;
  --cartao: #ffffff;
  --texto: #1d2733;
  --suave: #5f6f80;
  --borda: #dde4ec;
  --primaria: #1b5e8c;
  --primaria-escura: #134566;
  --ok: #1e8449;
  --atencao: #d68910;
  --alerta: #c0392b;
  --info: #2471a3;
  --raio: 10px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--fundo);
  color: var(--texto);
  line-height: 1.45;
}
a { color: var(--primaria); }
h1 { font-size: 1.5rem; margin: 0 0 .25rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 .75rem; }
.sub { color: var(--suave); margin: 0 0 1rem; font-size: .92rem; }

/* Topo */
.topo {
  display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1.5rem;
  background: var(--primaria-escura); color: #fff; padding: .7rem 16px;
}
.topo a { color: #fff; text-decoration: none; }
.marca { font-weight: 700; font-size: 1.15rem; }
.topo nav { display: flex; flex-wrap: wrap; gap: .25rem; flex: 1; }
.topo nav a { padding: .35rem .7rem; border-radius: 6px; opacity: .85; }
.topo nav a:hover, .topo nav a.ativo { background: rgba(255,255,255,.15); opacity: 1; }
.usuario { font-size: .9rem; opacity: .9; }
.badge { background: var(--alerta); color: #fff; border-radius: 999px; padding: 0 .45rem; font-size: .75rem; font-weight: 700; }

.conteudo { max-width: 1180px; margin: 0 auto; padding: 1.25rem 16px 2rem; }
.rodape { text-align: center; color: var(--suave); font-size: .8rem; padding: 1rem 16px 2rem; }

/* Seletor de estação */
.seletor { margin-bottom: 1rem; }
.seletor label { font-size: .85rem; color: var(--suave); display: inline-flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
select, input, textarea, button { font: inherit; }
select, input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], input[type=file], textarea {
  padding: .5rem .6rem; border: 1px solid var(--borda); border-radius: 8px; background: #fff; color: var(--texto); max-width: 100%;
}
.seletor select { min-width: 240px; font-weight: 600; color: var(--texto); }

/* Cartões e grades */
.grade { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.grade-2 { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.cartao { background: var(--cartao); border: 1px solid var(--borda); border-radius: var(--raio); padding: 1rem; min-width: 0; }
.cartao h3 { margin: 0 0 .5rem; font-size: .95rem; color: var(--suave); font-weight: 600; }
.metrica .rotulo { color: var(--suave); font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
.metrica .valor { font-size: 1.8rem; font-weight: 700; margin-top: .15rem; font-variant-numeric: tabular-nums; }
.metrica .valor small { font-size: .9rem; font-weight: 500; color: var(--suave); }
.metrica .extra { font-size: .82rem; color: var(--suave); }
.grafico { position: relative; height: 280px; }

/* Previsão diária */
.dias { display: grid; gap: .6rem; grid-template-columns: repeat(auto-fit, minmax(128px, 1fr)); }
.dia { text-align: center; background: var(--cartao); border: 1px solid var(--borda); border-radius: var(--raio); padding: .8rem .5rem; }
.dia .icone { font-size: 2rem; }
.dia .data { font-weight: 600; font-size: .9rem; }
.dia .temps { font-variant-numeric: tabular-nums; }
.dia .tmax { color: var(--alerta); font-weight: 700; }
.dia .tmin { color: var(--info); font-weight: 700; }
.dia .det { font-size: .8rem; color: var(--suave); }

/* Tabelas */
.tabela-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; background: var(--cartao); }
th, td { padding: .5rem .6rem; border-bottom: 1px solid var(--borda); text-align: left; white-space: nowrap; }
th { background: #eef2f6; font-weight: 600; font-size: .82rem; color: var(--suave); }
td.num { text-align: right; font-variant-numeric: tabular-nums; }

/* Alertas */
.alerta-item { border-left: 4px solid var(--info); background: var(--cartao); padding: .7rem 1rem; border-radius: 0 var(--raio) var(--raio) 0; margin-bottom: .6rem; display: flex; gap: 1rem; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.alerta-item.alerta { border-color: var(--alerta); }
.alerta-item.atencao { border-color: var(--atencao); }
.alerta-item .quando { font-size: .8rem; color: var(--suave); }
.alerta-item.visto { opacity: .6; }

/* Selos, avisos, botões */
.selo { display: inline-block; font-size: .72rem; padding: .1rem .5rem; border-radius: 999px; font-weight: 600; vertical-align: middle; }
.selo.modelo { background: #fdf2e0; color: #9a6400; }
.selo.medido { background: #e3f4ea; color: var(--ok); }
.selo.off { background: #f9e3e1; color: var(--alerta); }
.aviso { padding: .7rem 1rem; border-radius: 8px; margin-bottom: 1rem; background: #e3f4ea; color: #145a32; }
.aviso.erro { background: #f9e3e1; color: #7b241c; }
.aviso.info { background: #e4eef7; color: #1b4f72; }
.btn, button { display: inline-block; background: var(--primaria); color: #fff; border: 0; border-radius: 8px; padding: .5rem 1rem; cursor: pointer; text-decoration: none; font-weight: 600; }
.btn:hover, button:hover { background: var(--primaria-escura); }
.btn.sec, button.sec { background: #e6edf3; color: var(--texto); }
.btn.peq, button.peq { padding: .25rem .6rem; font-size: .82rem; }
.form-linha { display: flex; flex-wrap: wrap; gap: .75rem; align-items: end; margin-bottom: 1rem; }
.form-linha label { display: flex; flex-direction: column; font-size: .82rem; color: var(--suave); gap: .2rem; }
.abas { display: flex; flex-wrap: wrap; gap: .25rem; border-bottom: 1px solid var(--borda); margin-bottom: 1rem; }
.abas a { padding: .5rem .9rem; text-decoration: none; color: var(--suave); border-bottom: 2px solid transparent; }
.abas a.ativo { color: var(--primaria); border-color: var(--primaria); font-weight: 600; }
#mapa { height: 420px; border-radius: var(--raio); border: 1px solid var(--borda); }

/* Login */
.login { max-width: 380px; margin: 8vh auto; }
.login .cartao { padding: 1.5rem; }
.login label { display: block; margin-bottom: .8rem; font-size: .85rem; color: var(--suave); }
.login input { width: 100%; margin-top: .25rem; }
.login button { width: 100%; padding: .7rem; }

@media (max-width: 600px) {
  .metrica .valor { font-size: 1.5rem; }
  .grafico { height: 230px; }
  .seletor select { min-width: 0; width: 100%; }
  .seletor label { width: 100%; }
}