:root { --fg: #1b1b1b; --muted: #666; --line: #ddd; --bad: #b00020; --ok: #036b26; }
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, sans-serif; color: var(--fg); }
.topbar { display: flex; justify-content: space-between; align-items: center;
          padding: .75rem 1.25rem; border-bottom: 1px solid var(--line); }
.brand { font-weight: 600; }
nav a, nav button { margin-left: 1rem; }
.inline { display: inline; }
main { max-width: 60rem; margin: 1.5rem auto; padding: 0 1.25rem; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--line); }
th { font-weight: 600; }
label { display: block; margin: .75rem 0; }
input { display: block; width: 100%; padding: .45rem; margin-top: .25rem; }
button { padding: .45rem .9rem; cursor: pointer; }
.errors { color: var(--bad); }
.notice { background: #f3f7f3; border-left: 3px solid var(--ok); padding: .6rem .8rem; }
.muted { color: var(--muted); }
.warn { color: var(--bad); font-weight: 600; }