:root { font-family: system-ui, -apple-system, Segoe UI, sans-serif; color: #16202a; background: #f4f6f8; }
* { box-sizing: border-box; }
body { margin: 0; }
.container { max-width: 920px; margin: 0 auto; padding: 24px; }
.topbar { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 24px; }
.brand { color: #111827; font-size: 1.25rem; font-weight: 750; text-decoration: none; }
.card { background: white; border: 1px solid #dbe1e7; border-radius: 12px; padding: 22px; margin-bottom: 18px; box-shadow: 0 4px 18px rgba(0,0,0,.04); }
h1, h2 { margin-top: 0; }
label { display: block; font-weight: 650; margin: 14px 0 6px; }
input, textarea, select { width: 100%; padding: 11px 12px; border: 1px solid #aeb8c2; border-radius: 8px; font: inherit; background: white; }
textarea { min-height: 90px; resize: vertical; }
button, .button { display: inline-block; border: 0; border-radius: 8px; padding: 11px 16px; background: #16202a; color: white; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer; }
.button.secondary, button.secondary { background: #e7ebef; color: #16202a; }
.button.danger, button.danger { background: #a61b1b; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.notice { padding: 12px 14px; border-radius: 8px; background: #eef5ff; border: 1px solid #bdd6f6; margin: 12px 0; }
.error { background: #fff0f0; border-color: #efb1b1; }
.success { background: #edf9f0; border-color: #b8dfc1; }
.muted { color: #68737f; }
.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; overflow-wrap: anywhere; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px; border-bottom: 1px solid #e2e7ec; vertical-align: top; }
.badge { display: inline-block; padding: 4px 8px; border-radius: 999px; background: #edf0f3; font-size: .85rem; }
@media (max-width: 680px) { .row { grid-template-columns: 1fr; } .topbar { display: block; } }