:root { color-scheme: light dark; --accent: #0b6b5c; --line: #8884; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.45 system-ui, sans-serif; }
header { display: flex; justify-content: space-between; align-items: center; padding: .75rem 1rem; border-bottom: 1px solid var(--line); }
header nav { display: flex; gap: 1rem; align-items: center; }
.brand { font-weight: 700; text-decoration: none; color: inherit; }
main { max-width: 34rem; margin: 0 auto; padding: 1.5rem 1rem 4rem; }
main.wide, main:has(table) { max-width: 60rem; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
label { display: block; margin: .75rem 0 .25rem; font-weight: 600; }
input[type=text], input[type=email], input[type=tel], input[type=password] { width: 100%; padding: .55rem .6rem; font: inherit; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: inherit; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 .75rem; }
button, input[type=submit] { font: inherit; padding: .55rem 1rem; border: 0; border-radius: 6px; background: var(--accent); color: #fff; cursor: pointer; margin-top: 1rem; }
button.link { background: none; color: var(--accent); padding: 0; margin: 0; text-decoration: underline; }
a { color: var(--accent); }
.flash { padding: .6rem .8rem; border-radius: 6px; background: #0b6b5c22; }
.flash.alert { background: #b0302a22; }
.errors { background: #b0302a22; padding: .6rem 1rem; border-radius: 6px; }
.errors ul { margin: 0; padding-left: 1.2rem; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1rem; }
dt { font-weight: 600; } dd { margin: 0; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .4rem .5rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
.muted { opacity: .7; }
td button { margin: 0; padding: .3rem .7rem; }
header .back { margin-right: auto; margin-left: 1rem; font-weight: 600; }