:root {
  color-scheme: light;
  --bg: #eef2f6;
  --panel: #ffffff;
  --text: #172033;
  --muted: #667085;
  --line: #d8e0e9;
  --navy: #173b64;
  --ok: #157347;
  --ok-bg: #e8f6ee;
  --warn: #9a6700;
  --warn-bg: #fff4d6;
  --critical: #b42318;
  --critical-bg: #feebe9;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; overflow-x: hidden; }
body { font-family: "Segoe UI", Arial, sans-serif; color: var(--text); background: var(--bg); }
button, input { font: inherit; }
.hidden { display: none !important; }

.operational-shell { width: min(100% - 32px, 1240px); margin: 0 auto; padding: 20px 0 42px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 24px; }
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; color: inherit; text-decoration: none; }
.brand img { width: 54px; height: 54px; object-fit: contain; padding: 4px; border-radius: 10px; background: #fff; box-shadow: 0 5px 18px rgba(23, 32, 51, .08); }
.brand span { display: grid; min-width: 0; }
.brand strong { color: var(--navy); font-size: 20px; }
.brand small { color: var(--muted); font-size: 12px; }
.topbar-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }

.button { min-height: 42px; border: 1px solid transparent; border-radius: 8px; padding: 9px 14px; font-weight: 700; cursor: pointer; }
.button:focus-visible, input:focus-visible { outline: 3px solid rgba(29, 78, 216, .22); outline-offset: 2px; }
.button.primary { color: #fff; background: var(--navy); }
.button.secondary { color: var(--navy); border-color: #b9c8d8; background: #fff; }
.button.danger { color: var(--critical); border-color: #edb7b1; background: #fff; }

.login-view { min-height: calc(100vh - 130px); display: grid; place-items: center; }
.login-card { width: min(100%, 420px); display: grid; gap: 10px; padding: 28px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); box-shadow: 0 18px 44px rgba(23, 32, 51, .09); }
.login-card h1, .login-card p { margin: 0; }
.login-card h1 { color: var(--navy); font-size: 27px; }
.login-card > p:not(.eyebrow):not(.form-error) { margin-bottom: 10px; color: var(--muted); line-height: 1.5; }
.login-card label { margin-top: 4px; font-size: 13px; font-weight: 700; }
.login-card input { width: 100%; min-height: 44px; border: 1px solid #b9c5d2; border-radius: 8px; padding: 9px 11px; color: var(--text); background: #fff; }
.login-card .button { margin-top: 8px; }
.form-error { min-height: 20px; color: var(--critical); font-size: 13px; }
.eyebrow { margin: 0; color: #59718d; font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }

.dashboard { display: grid; gap: 16px; }
.summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.summary-card, .panel { min-width: 0; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); box-shadow: 0 6px 18px rgba(23, 32, 51, .045); }
.summary-card { display: grid; gap: 6px; padding: 17px; }
.summary-card span { color: var(--muted); font-size: 12px; font-weight: 700; }
.summary-card strong { color: var(--navy); font-size: 24px; }
.summary-card small { overflow-wrap: anywhere; color: var(--muted); }
.summary-card.status-ok { border-color: #abd9c0; background: var(--ok-bg); }
.summary-card.status-atencao { border-color: #efd28b; background: var(--warn-bg); }
.summary-card.status-critico { border-color: #ecb2ac; background: var(--critical-bg); }

.panel-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.panel { padding: 17px; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.panel-heading h2 { margin: 0; color: var(--navy); font-size: 17px; }
.refresh-state { color: var(--muted); font-size: 11px; }
.item-list, .alert-list { display: grid; gap: 8px; min-width: 0; }
.item-row, .alert-row, .empty-state { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 12px; min-width: 0; padding: 10px 11px; border: 1px solid #e2e7ed; border-radius: 8px; background: #f8fafc; }
.item-row > div, .alert-row > div { min-width: 0; }
.item-row strong, .alert-row strong { display: block; overflow-wrap: anywhere; font-size: 13px; }
.item-row small, .alert-row small { display: block; margin-top: 3px; overflow-wrap: anywhere; color: var(--muted); line-height: 1.35; }
.status-pill { display: inline-flex; align-items: center; justify-content: center; min-width: 72px; border-radius: 999px; padding: 5px 9px; font-size: 10px; font-weight: 800; text-transform: uppercase; }
.status-pill.status-ok { color: var(--ok); background: var(--ok-bg); }
.status-pill.status-atencao { color: var(--warn); background: var(--warn-bg); }
.status-pill.status-critico { color: var(--critical); background: var(--critical-bg); }
.alert-row.status-atencao { border-color: #efd28b; background: var(--warn-bg); }
.alert-row.status-critico { border-color: #ecb2ac; background: var(--critical-bg); }
.empty-state { display: block; color: var(--muted); text-align: center; }

@media (max-width: 900px) {
  .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  .operational-shell { width: min(100% - 20px, 520px); padding-top: 12px; }
  .topbar { align-items: flex-start; }
  .brand img { width: 46px; height: 46px; }
  .brand strong { font-size: 17px; }
  .brand small { display: none; }
  .topbar-actions { max-width: 150px; }
  .button { min-height: 40px; padding: 8px 10px; font-size: 12px; }
  .panel-grid { grid-template-columns: 1fr; }
  .login-card { padding: 21px; }
}

@media (max-width: 430px) {
  .summary-grid { grid-template-columns: 1fr; }
  .item-row, .alert-row { grid-template-columns: 1fr; }
  .status-pill { justify-self: start; }
}