:root { color-scheme: light; --navy: #172033; --blue: #2563eb; --muted: #64748b; --surface: #fff; --bg: #f1f5f9; }
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, Segoe UI, sans-serif; color: #172033; background: var(--bg); }
a { color: var(--blue); }
.auth-page { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.auth-card { width: min(100%, 26rem); padding: 2rem; background: var(--surface); border-radius: 1rem; box-shadow: 0 1rem 3rem #17203318; }
.auth-card h1 { margin-top: 0; }
label { display: block; margin: 1rem 0 .35rem; font-weight: 600; }
input { width: 100%; padding: .7rem .8rem; border: 1px solid #cbd5e1; border-radius: .5rem; font: inherit; }
button { cursor: pointer; border: 0; border-radius: .5rem; padding: .7rem 1rem; background: var(--blue); color: white; font: inherit; font-weight: 700; }
.button-secondary { background: #e2e8f0; color: var(--navy); }
.error { padding: .75rem; border-radius: .5rem; background: #fee2e2; color: #991b1b; }
.admin-layout { min-height: 100vh; display: flex; }
.sidebar { width: 16rem; padding: 1.25rem; background: var(--navy); color: white; }
.sidebar h1 { font-size: 1.1rem; margin: 0 0 2rem; }
.sidebar a { display: block; padding: .7rem; color: #cbd5e1; text-decoration: none; border-radius: .4rem; }
.sidebar a:hover, .sidebar a.active { color: white; background: #ffffff18; }
.main { flex: 1; min-width: 0; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1rem 1.5rem; background: white; border-bottom: 1px solid #e2e8f0; }
.content { padding: 1.5rem; max-width: 80rem; }
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.card { padding: 1.2rem; background: white; border: 1px solid #e2e8f0; border-radius: .8rem; }
.card .value { display: block; margin-top: .5rem; font-size: 1.8rem; font-weight: 800; }
.muted { color: var(--muted); }
.mobile-toggle { display: none; }
@media (max-width: 800px) { .sidebar { position: fixed; inset: 0 auto 0 0; z-index: 2; transform: translateX(-105%); transition: transform .2s ease; } .sidebar.open { transform: translateX(0); } .mobile-toggle { display: inline-block; background: var(--navy); } .topbar { padding: .8rem 1rem; } .content { padding: 1rem; } .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .cards { grid-template-columns: 1fr; } }