:root {
  --vit-blue: #1155cc;
  --vit-blue-dark: #0b2f73;
  --vit-gold: #f5c542;
  --vit-ink: #111827;
  --vit-muted: #64748b;
  --vit-bg: #f6f8fc;
  --vit-panel: #ffffff;
  --vit-border: #dce3ef;
  --vit-hero: #0b1220;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, system-ui, sans-serif; background: var(--vit-bg); color: var(--vit-ink); }
a { color: var(--vit-blue); text-decoration: none; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: #fff; padding: .5rem; }
.hero { background: var(--vit-hero); color: #fff; padding: 1.25rem 0 4rem; }
.wrap { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }
.nav { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .6rem; color: inherit; font-weight: 800; }
.mark { width: 36px; height: 36px; border-radius: 8px; background: var(--vit-blue); color: var(--vit-gold); display: grid; place-items: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; padding: .7rem 1.1rem; font-weight: 700; border: 0; cursor: pointer; }
.btn-gold { background: var(--vit-gold); color: #111; }
.btn-light { background: #fff; color: var(--vit-blue-dark); }
.btn-primary { background: var(--vit-blue); color: #fff; }
.btn-outline { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.4); }
.panel { background: var(--vit-panel); border: 1px solid var(--vit-border); border-radius: 18px; padding: 1.25rem; }
.grid { display: grid; gap: 1rem; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.muted { color: var(--vit-muted); }
input, select, textarea { width: 100%; padding: .7rem .8rem; border: 1px solid var(--vit-border); border-radius: 10px; font: inherit; }
label { display: block; font-weight: 600; margin: .6rem 0 .3rem; }
.alert { padding: .8rem 1rem; border-radius: 10px; margin-bottom: 1rem; }
.alert-error { background: #fee2e2; color: #991b1b; }
.alert-info { background: #dbeafe; color: #1e3a8a; }
.auth-card { width: min(520px, calc(100% - 2rem)); margin: 3rem auto; }
.app-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { background: #0b1220; color: #e5edf9; padding: 1.2rem; }
.sidebar a { color: inherit; display: block; padding: .45rem 0; }
.content { padding: 1.5rem; }
.price { font-size: 2rem; font-weight: 800; }
.strike { text-decoration: line-through; color: var(--vit-muted); font-size: 1.1rem; }
footer { padding: 2rem 0; color: var(--vit-muted); }
@media (max-width: 800px) {
  .app-shell { grid-template-columns: 1fr; }
  .nav { flex-wrap: wrap; }
}
:focus-visible { outline: 3px solid var(--vit-gold); outline-offset: 2px; }