:root {
  color-scheme: light dark;
  --surface: #ffffff;
  --surface-muted: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --line: #cbd5e1;
  --accent: #4338ca;
  --focus: #1d4ed8;
  --space: 1rem;
}

@media (prefers-color-scheme: dark) {
  :root { --surface: #0f172a; --surface-muted: #111827; --text: #f8fafc; --muted: #cbd5e1; --line: #475569; --accent: #a5b4fc; --focus: #93c5fd; }
}

* { box-sizing: border-box; }
html { font: 16px/1.5 Inter, ui-sans-serif, system-ui, sans-serif; background: var(--surface-muted); color: var(--text); }
a { color: inherit; }
button, input { font: inherit; }
button { border: 0; border-radius: .5rem; background: var(--accent); color: #fff; padding: .65rem 1rem; cursor: pointer; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.skip-link { position: fixed; left: .75rem; top: .5rem; transform: translateY(-160%); background: var(--surface); padding: .5rem; z-index: 2; }
.skip-link:focus { transform: translateY(0); }
.topbar { min-height: 4rem; display: flex; align-items: center; gap: 1.25rem; padding: .75rem max(1rem, calc((100% - 75rem) / 2)); background: var(--surface); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.brand { font-weight: 750; text-decoration: none; white-space: nowrap; }
nav { display: flex; gap: .85rem; flex-wrap: wrap; }
nav a { padding: .35rem .5rem; text-decoration: none; color: var(--muted); border-radius: .35rem; }
nav a[aria-current="page"] { color: var(--text); background: var(--surface-muted); font-weight: 650; }
.account-actions { margin-left: auto; }
#main { width: min(100% - 2rem, 75rem); margin: 0 auto; padding: 2rem 0 4rem; }
.page-heading { margin-bottom: 1.25rem; }
.page-heading h1, .state-card h1, .auth-card h1 { margin: .2rem 0 .45rem; font-size: clamp(1.75rem, 4vw, 2.4rem); line-height: 1.15; }
.page-heading p, .state-card p, .auth-card p { color: var(--muted); }
.eyebrow { color: var(--accent); font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.freshness { border: 1px solid var(--line); background: var(--surface); border-radius: .65rem; padding: .65rem .8rem; margin-bottom: 1rem; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; }
.card, .state-card, .auth-card, .detail { background: var(--surface); border: 1px solid var(--line); border-radius: .8rem; padding: 1rem; }
.card h2, .detail h2 { font-size: 1rem; margin: 0 0 .35rem; }
.metric { font-size: 1.65rem; font-weight: 750; margin: .25rem 0 0; }
.detail { margin-top: 1rem; }
.list { margin: 0; padding-left: 1.2rem; }
.list li { margin: .5rem 0; }
.auth-card { max-width: 32rem; margin: 4rem auto; }
form { display: grid; gap: .5rem; margin-top: 1rem; }
label { font-weight: 650; }
input { border: 1px solid var(--line); border-radius: .45rem; background: var(--surface); color: var(--text); padding: .65rem .7rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skeleton { min-height: 18rem; border-radius: .8rem; background: linear-gradient(90deg, var(--surface-muted), var(--surface), var(--surface-muted)); }
@media (max-width: 48rem) { .topbar { align-items: flex-start; } .account-actions { margin-left: 0; } #main { padding-top: 1.25rem; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; } }