:root {
  --bg: #f4f5f2; --fg: #1d2420; --muted: #5d6762; --card: #ffffff;
  --line: #d9ddd8; --accent: #1f5f4a; --accent-fg: #ffffff;
  --err-bg: #fbe9e7; --err-fg: #8a1f11; --warn-bg: #fff4d6; --warn-fg: #6b4e00;
  --ok-bg: #e6f4ea; --ok-fg: #1e5e32;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141816; --fg: #e7ebe8; --muted: #9aa49f; --card: #1d2320;
    --line: #2e3631; --accent: #5fb592; --accent-fg: #0d1411;
    --err-bg: #3a1d19; --err-fg: #f4b8ad; --warn-bg: #3a3016; --warn-fg: #f2d991;
    --ok-bg: #173323; --ok-fg: #a6dcb6;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.top {
  display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; justify-content: space-between;
  padding: .9rem 1.25rem; border-bottom: 1px solid var(--line); background: var(--card);
}
.brand { font-weight: 700; color: var(--fg); text-decoration: none; }
.brand span { font-weight: 400; color: var(--muted); }
nav { display: flex; gap: 1rem; align-items: center; }
nav a, .link { color: var(--accent); text-decoration: none; font: inherit; }
nav form { margin: 0; }
.link { background: none; border: 0; padding: 0; cursor: pointer; }
main { max-width: 60rem; margin: 0 auto; padding: 1.5rem 1.25rem 3rem; }
h1 { font-size: 1.5rem; margin: 0 0 .75rem; }
h2 { font-size: 1.1rem; margin: 0 0 .4rem; }
.muted, .hint { color: var(--muted); }
.hint { font-size: .9rem; margin-top: 1rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); margin-top: 1rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: .6rem; padding: 1.1rem 1.2rem; }
.narrow { max-width: 24rem; margin: 2rem auto; }
label { display: block; font-weight: 600; margin: .8rem 0 .3rem; }
input[type=text], input[type=password] {
  width: 100%; padding: .65rem .75rem; font: inherit; color: var(--fg);
  background: var(--bg); border: 1px solid var(--line); border-radius: .4rem;
}
form > div { margin-bottom: .4rem; }
.helptext, form ul { color: var(--muted); font-size: .85rem; }
.errorlist { color: var(--err-fg); padding-left: 1.1rem; }
button[type=submit]:not(.link) {
  margin-top: 1.1rem; width: 100%; padding: .7rem; font: inherit; font-weight: 600;
  color: var(--accent-fg); background: var(--accent); border: 0; border-radius: .4rem; cursor: pointer;
}
.msg { padding: .7rem .9rem; border-radius: .4rem; margin-bottom: 1rem; }
.msg-error { background: var(--err-bg); color: var(--err-fg); }
.msg-warning { background: var(--warn-bg); color: var(--warn-fg); }
.msg-success, .msg-info { background: var(--ok-bg); color: var(--ok-fg); }