/* Hangar status page — vanilla CSS, WCAG 2.2 AA. */

:root {
  --bg: #ffffff;
  --fg: #111418;
  --muted: #4a5560;
  --border: #d0d7de;
  --card: #f6f8fa;
  --focus: #0b66c3;
  --green: #117a3d;
  --yellow: #946400;
  --red: #b42318;
  --unknown: #4a5560;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #e6edf3;
    --muted: #9da7b1;
    --border: #30363d;
    --card: #161b22;
    --focus: #4493f8;
    --green: #2ea043;
    --yellow: #d29922;
    --red: #f85149;
    --unknown: #8b949e;
  }
}

* {
  box-sizing: border-box;
}

html {
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    sans-serif;
  line-height: 1.5;
  color: var(--fg);
  background: var(--bg);
}

body {
  margin: 0;
  padding: 2rem 1rem 3rem;
  max-width: 64rem;
  margin-inline: auto;
}

a {
  color: var(--focus);
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
}
.skip-link:focus {
  position: static;
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--focus);
  color: #fff;
  text-decoration: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
}

.tagline,
.muted,
.meta {
  color: var(--muted);
  margin: 0.25rem 0 0;
}

.overview {
  margin: 2rem 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
}

.overall {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  margin: 0.25rem 0;
}

.overall[data-status="operational"] {
  color: var(--green);
}
.overall[data-status="degraded"] {
  color: var(--yellow);
}
.overall[data-status="down"] {
  color: var(--red);
}
.overall[data-status="unknown"] {
  color: var(--unknown);
}

.status-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5em;
  height: 1.5em;
  border-radius: 50%;
  border: 2px solid currentColor;
  font-weight: 700;
  font-size: 0.9em;
  line-height: 1;
}

.components {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
}
.components th,
.components td {
  text-align: left;
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.components th {
  font-weight: 600;
}

.dot {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.dot::before {
  content: "";
  display: inline-block;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: currentColor;
  flex: 0 0 auto;
}
.dot[data-status="operational"] {
  color: var(--green);
}
.dot[data-status="degraded"] {
  color: var(--yellow);
}
.dot[data-status="down"] {
  color: var(--red);
}
.dot[data-status="unknown"] {
  color: var(--unknown);
}

.history {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.5rem;
}

.history-row {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: 0.75rem;
  align-items: center;
}

.history-label {
  font-weight: 600;
}

.history-bars {
  display: flex;
  gap: 1px;
  height: 1.5rem;
  align-items: stretch;
  overflow-x: auto;
}

.history-bar {
  flex: 1 0 0.25rem;
  min-width: 0.25rem;
  background: var(--unknown);
  border: 0;
  padding: 0;
}
.history-bar[data-status="operational"] {
  background: var(--green);
}
.history-bar[data-status="degraded"] {
  background: var(--yellow);
}
.history-bar[data-status="down"] {
  background: var(--red);
}
.history-bar:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.site-footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .history-row {
    grid-template-columns: 1fr;
  }
  .components th:nth-child(4),
  .components td:nth-child(4) {
    display: none;
  }
}