:root {
  --bg: #f4f4f2;
  --fg: #1c1c1c;
  --muted: #6b6b6b;
  --line: #d9d9d4;
  --card: #ffffff;
  --accent: #1f5f4a;
  --accent-fg: #ffffff;
  --danger: #a1302a;
  --warn: #8a5a00;
  --pending: #8a5a00;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161716;
    --fg: #e8e8e4;
    --muted: #9a9a94;
    --line: #34352f;
    --card: #1f201e;
    --accent: #4fae8a;
    --accent-fg: #0f1a15;
    --danger: #e0716a;
    --warn: #e0b04f;
    --pending: #e0b04f;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); line-height: 1.5; }
h1 { font-size: 1.25rem; margin: 0 0 1rem; }
h2 { font-size: 1rem; margin: 2rem 0 .5rem; }
code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
.muted { color: var(--muted); font-weight: normal; }
.error { color: var(--danger); }
.warn { color: var(--warn); }
[hidden] { display: none !important; }

button {
  font: inherit; cursor: pointer; padding: .5rem .9rem; border-radius: 6px;
  border: 1px solid var(--line); background: var(--card); color: var(--fg);
}
button.primary, button.approve { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
button.revoke { color: var(--danger); }
button.link { border: none; background: none; color: var(--muted); text-decoration: underline; padding: .25rem; }
button.small { padding: .2rem .5rem; font-size: .85rem; }
input { font: inherit; padding: .45rem .6rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--fg); }

/* public */
body.public { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.card { width: 100%; max-width: 420px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 1.75rem; }
.card button.primary { width: 100%; }
details { margin-top: 1.25rem; }
summary { cursor: pointer; color: var(--muted); }
#register p { font-size: .9rem; margin: .5rem 0; }
.shortid-box { display: grid; gap: .25rem; margin: 1rem 0 1.25rem; padding: 1rem; border: 1px dashed var(--line); border-radius: 8px; text-align: center; }
.shortid-box span, .shortid-box small { color: var(--muted); font-size: .85rem; }
.shortid-box code { font-size: 1.9rem; letter-spacing: .08em; font-weight: 600; user-select: all; }

/* admin */
body.admin { max-width: 1200px; margin: 0 auto; padding: 1.5rem 16px 4rem; }
body.admin header { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); padding-bottom: 1rem; }
body.admin header h1 { margin: 0; }
.search { display: flex; gap: .5rem; align-items: center; }
.flash { background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--accent); padding: .5rem .75rem; border-radius: 6px; }
.count { display: inline-block; min-width: 1.5em; padding: 0 .4em; border-radius: 99px; background: var(--line); font-size: .8rem; text-align: center; }
table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; font-size: .9rem; }
th, td { text-align: left; padding: .55rem .7rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; font-size: .8rem; color: var(--muted); }
tr:last-child td { border-bottom: none; }
code.sid { font-size: 1rem; font-weight: 600; white-space: nowrap; }
.actions { display: flex; gap: .4rem; flex-wrap: wrap; }
.actions form { margin: 0; }
form.inline { display: flex; gap: .3rem; }
form.inline input { width: 12rem; padding: .25rem .45rem; }
.ua { max-width: 22rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--muted); }
.badge { font-size: .8rem; padding: .05rem .45rem; border-radius: 4px; border: 1px solid var(--line); }
.badge.granted { color: var(--accent); border-color: var(--accent); }
.badge.pending, .badge.registered { color: var(--pending); border-color: var(--pending); }
.badge.revoked, .badge.failed, .badge.unknown { color: var(--danger); border-color: var(--danger); }
@media (max-width: 800px) {
  table { display: block; overflow-x: auto; }
}
.badge.cloned { color: var(--danger); border-color: var(--danger); font-weight: 600; }
.flash.danger { border-left-color: var(--danger); }
body.admin h1 a { color: inherit; text-decoration: none; }
body.admin a code.sid { color: var(--accent); }
code.sid.big { font-size: 1.25rem; margin: 0 .4rem; }
.badge.approved { color: var(--accent); border-color: var(--accent); }
.detail-actions { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-top: 1rem; }
.detail-actions form { margin: 0; }
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 0 2rem; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1rem; margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: .9rem 1rem; font-size: .9rem; }
dt { color: var(--muted); }
dd { margin: 0; min-width: 0; }
.wrap { overflow-wrap: anywhere; }
p.small { font-size: .8rem; }