/* Hub — Urgência Automóvel
   Ideia: o painel de instrumentos de um carro. Luzes apagadas = tudo bem;
   acendem a âmbar/vermelho só quando algo pede atenção. O resto é calmo:
   aço claro, grafite, uma família tipográfica (Barlow) em duas larguras. */

:root {
  --steel: #E4E8EB;
  --panel: #F7F8F9;
  --graphite: #1F252B;
  --graphite-2: #2B333B;
  --slate: #5D6873;
  --rule: #C9D0D6;
  --amber: #F2B705;
  --red: #C8372D;
  --green: #2F7D52;
  --lamp-off: #3A444E;
  --text: #1F252B;
  --link: #1B5E8C;
  --radius-s: 4px;
  --radius-m: 8px;
  --font: "Barlow", system-ui, sans-serif;
  --font-cond: "Barlow Condensed", "Barlow", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--steel);
  color: var(--text);
  font: 400 16px/1.45 var(--font);
  font-variant-numeric: tabular-nums;
}
a { color: var(--link); }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
button, input, select { font: inherit; }
.boot { padding: 2rem; color: var(--slate); }

/* ---------- Estrutura ---------- */
.shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.shell > * { min-width: 0; }
.rail {
  background: var(--graphite);
  color: #DCE2E7;
  padding: 1.25rem 0.75rem;
  display: flex; flex-direction: column; gap: 1.5rem;
  position: sticky; top: 0; height: 100vh;
}
.brand { font: 700 1.25rem/1.1 var(--font-cond); color: #fff; padding: 0 0.5rem; letter-spacing: 0.01em; }
.brand small { display: block; font: 500 0.85rem/1.3 var(--font); color: #9AA6B1; letter-spacing: 0; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav a {
  display: flex; justify-content: space-between; align-items: center;
  color: #DCE2E7; text-decoration: none;
  padding: 0.55rem 0.6rem; border-radius: var(--radius-s);
  font-weight: 500;
}
.nav a:hover { background: var(--graphite-2); }
.nav a[aria-current="page"] { background: var(--graphite-2); color: #fff; box-shadow: inset 3px 0 0 var(--amber); }
.nav .count { font: 600 0.8rem/1 var(--font); background: var(--amber); color: var(--graphite); padding: 3px 7px; border-radius: 10px; }
.rail-foot { margin-top: auto; font-size: 0.85rem; color: #9AA6B1; padding: 0 0.5rem; display: grid; gap: 0.4rem; }
.rail-foot a { color: #C4CDD5; }
.rail-foot button { background: none; border: 1px solid #4A545E; color: #DCE2E7; border-radius: var(--radius-s); padding: 0.35rem 0.6rem; cursor: pointer; justify-self: start; }

main { padding: 1.75rem clamp(1rem, 3vw, 2.5rem) 3rem; max-width: 1200px; width: 100%; }
.page-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
h1 { font: 700 2rem/1.1 var(--font-cond); margin: 0; }
h2 { font: 600 1.35rem/1.2 var(--font-cond); margin: 2rem 0 0.75rem; }
.muted { color: var(--slate); }
.small { font-size: 0.875rem; }
.flush { margin: 0; }
.lead { margin-top: -0.4rem; }
.refresh { font-size: 0.875rem; color: var(--slate); display: flex; gap: 0.6rem; align-items: center; }
.btn {
  background: var(--graphite); color: #fff; border: 0; border-radius: var(--radius-s);
  padding: 0.5rem 0.9rem; font-weight: 600; cursor: pointer;
}
.btn.ghost { background: transparent; color: var(--graphite); border: 1px solid var(--rule); }

/* ---------- Quadro de instrumentos (o elemento marcante) ---------- */
.cluster {
  background: var(--graphite);
  color: #fff;
  border-radius: var(--radius-m);
  padding: 1.25rem 1.5rem 1.4rem;
}
.cluster-msg { font: 600 1.6rem/1.2 var(--font-cond); margin: 0 0 1.1rem; }
.cluster-msg span { display: block; font: 400 0.95rem/1.4 var(--font); color: #AEB8C2; margin-top: 0.3rem; }
.lamps { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 0.75rem; }
.lamp { display: grid; justify-items: center; gap: 0.45rem; text-align: center; text-decoration: none; color: #AEB8C2; font-size: 0.85rem; line-height: 1.2; }
.lamp svg { width: 40px; height: 40px; color: var(--lamp-off); transition: color 0.2s, filter 0.2s; }
.lamp[data-state="warn"] svg { color: var(--amber); filter: drop-shadow(0 0 6px rgba(242, 183, 5, 0.65)); }
.lamp[data-state="fault"] svg { color: #FF5A4B; filter: drop-shadow(0 0 6px rgba(255, 90, 75, 0.6)); }
.lamp[data-state="warn"], .lamp[data-state="fault"] { color: #fff; font-weight: 600; }
.lamp:hover { color: #fff; }

/* ---------- Números ---------- */
.gauges { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0; background: var(--panel); border: 1px solid var(--rule); border-radius: var(--radius-m); overflow: hidden; margin-top: 1.25rem; }
.gauge { padding: 0.9rem 1rem; box-shadow: 1px 0 0 var(--rule), 0 1px 0 var(--rule); }
.gauge b { display: block; font: 600 2rem/1 var(--font-cond); }
.gauge span { font-size: 0.875rem; color: var(--slate); }

/* ---------- Tabelas ---------- */
.table-wrap { background: var(--panel); border: 1px solid var(--rule); border-radius: var(--radius-m); overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.925rem; }
th { text-align: left; font-weight: 600; color: var(--slate); padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--rule); white-space: nowrap; background: #EEF1F3; }
td { padding: 0.6rem 0.8rem; border-bottom: 1px solid #E2E6E9; vertical-align: top; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; }
.sku { font-weight: 600; white-space: nowrap; }
.thumb { width: 44px; height: 44px; object-fit: cover; border-radius: var(--radius-s); background: var(--steel); display: block; }
.thumb.empty { display: grid; place-items: center; color: var(--slate); font-size: 0.7rem; }
.empty-state { padding: 1.5rem; color: var(--slate); }

.tag { display: inline-block; font-size: 0.8rem; font-weight: 600; padding: 2px 8px; border-radius: 10px; white-space: nowrap; border: 1px solid transparent; }
.tag.ok { background: #DDEFE4; color: #1F5A3A; }
.tag.warn { background: #FCEFC2; color: #6B5100; }
.tag.fault { background: #F6D9D6; color: #8A231B; }
.tag.neutral { background: #E6EAED; color: #3C464F; }

/* ---------- Alertas ---------- */
.alerts { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.alert { background: var(--panel); border: 1px solid var(--rule); border-left: 4px solid var(--slate); border-radius: var(--radius-s); padding: 0.7rem 0.9rem; display: grid; gap: 0.15rem; }
.alert[data-sev="alta"] { border-left-color: var(--red); }
.alert[data-sev="media"] { border-left-color: var(--amber); }
.alert strong { font-weight: 600; }
.alert .when { font-size: 0.825rem; color: var(--slate); }
.calm { background: var(--panel); border: 1px solid var(--rule); border-radius: var(--radius-m); padding: 1rem 1.1rem; color: var(--slate); }

/* ---------- Catálogo: filtros ---------- */
.toolbar { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; margin-bottom: 0.9rem; }
.toolbar input[type="search"] { flex: 1 1 260px; padding: 0.55rem 0.75rem; border: 1px solid var(--rule); border-radius: var(--radius-s); background: #fff; }
.seg { display: inline-flex; border: 1px solid var(--rule); border-radius: var(--radius-s); overflow: hidden; background: #fff; }
.seg button { border: 0; background: transparent; padding: 0.5rem 0.8rem; cursor: pointer; color: var(--slate); }
.seg button[aria-pressed="true"] { background: var(--graphite); color: #fff; }
.pager { display: flex; gap: 0.6rem; align-items: center; justify-content: flex-end; margin-top: 0.75rem; font-size: 0.9rem; color: var(--slate); }
.pager button { background: #fff; border: 1px solid var(--rule); border-radius: var(--radius-s); padding: 0.4rem 0.75rem; cursor: pointer; }
.pager button:disabled { opacity: 0.45; cursor: default; }

/* ---------- Login ---------- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 1rem; background: var(--graphite); }
.login form { background: var(--panel); border-radius: var(--radius-m); padding: 1.75rem; width: min(380px, 100%); display: grid; gap: 0.9rem; }
.login h1 { font-size: 1.75rem; }
.login label { display: grid; gap: 0.3rem; font-weight: 500; font-size: 0.925rem; }
.login input { padding: 0.6rem 0.75rem; border: 1px solid var(--rule); border-radius: var(--radius-s); background: #fff; }
.login .error { color: var(--red); font-size: 0.9rem; margin: 0; }
.login code { font-size: 0.8rem; word-break: break-all; background: var(--steel); padding: 2px 4px; border-radius: 3px; }

.err-box { background: #F6D9D6; color: #8A231B; border-radius: var(--radius-s); padding: 0.75rem 1rem; }

/* ---------- Telemóvel ---------- */
@media (max-width: 820px) {
  .shell { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .rail { position: sticky; height: auto; flex-direction: row; align-items: center; padding: 0.6rem 0.75rem; gap: 0.75rem; overflow-x: auto; z-index: 5; }
  .brand small, .rail-foot .links { display: none; }
  .rail-foot { margin: 0 0 0 auto; padding: 0; }
  .brand { font-size: 1.05rem; white-space: nowrap; }
  .nav { flex-direction: row; }
  .nav a { white-space: nowrap; gap: 0.4rem; padding: 0.45rem 0.6rem; }
  .nav a[aria-current="page"] { box-shadow: inset 0 -3px 0 var(--amber); }
  .lamps { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 1rem; }
  h1 { font-size: 1.6rem; }
  .cluster-msg { font-size: 1.3rem; }
  .hide-sm { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}