/* Altitude Atlas — shared brand styling. Palette drawn from the Altitude mark:
   navy wordmark + teal→blue→magenta hexagon gradient. */

:root {
  color-scheme: light dark;
  --navy: #0e1f43;
  --navy-soft: #1b2c52;
  --ink: #16233f;
  --muted: #5b6473;
  --bg: #f6f7f9;
  --card: #ffffff;
  --border: #e6e8ec;
  --accent: #2f6cb6;
  --accent-ink: #ffffff;
  --brand-gradient: linear-gradient(90deg, #46b98f, #2aa3d0, #2f6cb6, #7a3f9e, #c8397c);
  --ok: #0a7c42;
  --warn-bg: #fff6e5;
  --warn-bar: #d98324;
  --shadow: 0 1px 2px rgba(16, 32, 63, 0.04), 0 12px 32px rgba(16, 32, 63, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --navy: #dfe6f2;
    --navy-soft: #b9c4d8;
    --ink: #e8ecf3;
    --muted: #93a0b5;
    --bg: #0a1424;
    --card: #101d33;
    --border: #23324d;
    --accent: #5aa0e0;
    --accent-ink: #06101f;
    --warn-bg: #2a2113;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 16px 40px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.card {
  width: 100%;
  max-width: 30rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

/* Gradient hairline echoing the logo hexagon. */
.card__accent { height: 4px; background: var(--brand-gradient); }

.card__body { padding: 2.25rem 2rem 1.75rem; }

.logo { height: 34px; width: auto; margin-bottom: 1.75rem; }
@media (prefers-color-scheme: dark) {
  /* The navy wordmark needs lifting on a dark background. */
  .logo { filter: brightness(0) invert(1); opacity: 0.92; }
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

h1 {
  font-size: 1.45rem;
  line-height: 1.25;
  font-weight: 650;
  color: var(--navy);
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}

p { color: var(--muted); margin: 0 0 1rem; }
p.lead { color: var(--ink); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding: 0.72rem 1.35rem;
  background: var(--navy);
  color: var(--accent-ink);
  text-decoration: none;
  border: 0;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.06s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}
@media (prefers-color-scheme: dark) { .btn { background: var(--accent); } }
.btn:hover { box-shadow: 0 6px 18px rgba(16, 32, 63, 0.18); }
.btn:active { transform: translateY(1px); }

.muted { color: var(--muted); font-size: 0.82rem; }

.divider { height: 1px; background: var(--border); margin: 1.75rem 0 1.25rem; border: 0; }

dl { margin: 0.5rem 0 0; }
dt { font-weight: 600; margin-top: 0.75rem; font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
dd { margin: 0.1rem 0 0; }

code {
  background: color-mix(in srgb, var(--muted) 14%, transparent);
  padding: 0.1rem 0.4rem;
  border-radius: 5px;
  font-size: 0.88em;
  font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
  word-break: break-all;
}

.ok { color: var(--ok); font-weight: 600; }

.status-icon {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; margin-bottom: 1.25rem;
}
.status-icon.good { background: color-mix(in srgb, var(--ok) 16%, transparent); color: var(--ok); }
.status-icon.bad { background: color-mix(in srgb, var(--warn-bar) 18%, transparent); color: var(--warn-bar); }

.warn {
  background: var(--warn-bg);
  border-left: 3px solid var(--warn-bar);
  padding: 0.8rem 1rem;
  border-radius: 0 6px 6px 0;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--ink);
}

.footer {
  padding: 1rem 2rem 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.75rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--accent); }
.ref { margin-top: 1.75rem; color: var(--muted); font-size: 0.76rem; }