:root {
  --red: #ec3750;
  --red-dark: #c5203a;
  --bg: #f9fafc;
  --card: #fff;
  --text: #1f2d3d;
  --muted: #8492a6;
  --border: #e0e6ed;
  --ok: #33d6a6;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #17171d; --card: #252429; --text: #f9fafc; --muted: #a0a8b5; --border: #3c4858; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
header {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--card);
}
.brand { font-weight: 800; font-size: 1.15rem; color: var(--red); text-decoration: none; }
nav { display: flex; align-items: center; gap: 18px; }
nav a { color: var(--text); text-decoration: none; font-weight: 500; }
nav a:hover { color: var(--red); }
main { max-width: 960px; margin: 32px auto; padding: 0 16px; }
main.narrow { max-width: 440px; margin-top: 8vh; }
h1 { font-size: 1.7rem; margin: 0 0 8px; }
h2 { font-size: 1.2rem; margin: 0 0 12px; }
a { color: var(--red); }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 24px; margin-bottom: 20px; box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.muted { color: var(--muted); }
.small { font-size: .85rem; }
label { display: block; margin: 0 0 14px; font-weight: 600; font-size: .92rem; }
label.check { display: flex; gap: 8px; align-items: center; font-weight: 500; }
.hint { display: block; font-weight: 400; color: var(--muted); font-size: .82rem; margin-top: 3px; }
input, textarea, select {
  display: block; width: 100%; margin-top: 5px; padding: 10px 12px; font: inherit; font-weight: 400;
  border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text);
}
label.check input { width: auto; margin: 0; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--red); outline-offset: -1px; }
input.code { font-size: 1.5rem; letter-spacing: .3em; text-align: center; font-variant-numeric: tabular-nums; }
.row input.code { font-size: 1.1rem; max-width: 180px; }
button, .button {
  display: inline-block; padding: 10px 18px; font: inherit; font-weight: 700; border: 0; border-radius: 8px;
  background: var(--red); color: #fff; cursor: pointer; text-decoration: none; white-space: nowrap;
}
button:hover, .button:hover { background: var(--red-dark); }
button.secondary, .button.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
button.danger { background: transparent; color: var(--red); border: 1px solid var(--red); }
button.link { background: none; border: 0; padding: 0; color: var(--text); font-weight: 500; }
button.link.danger { color: var(--red); }
form.inline { display: inline; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row input { margin: 0; flex: 1; min-width: 160px; }
.row.spread { justify-content: space-between; }
.card.row form { margin: 0; }
.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; border: 1px solid; word-break: break-all; }
.flash.error { border-color: var(--red); color: var(--red); background: rgba(236,55,80,.06); }
.flash.ok { border-color: var(--ok); background: rgba(51,214,166,.08); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .88em; word-break: break-all; }
code.secret { display: inline-block; padding: 6px 10px; margin-top: 6px; border-radius: 6px; background: var(--bg); border: 1px solid var(--border); user-select: all; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
tr.disabled td { opacity: .55; }
.pill { display: inline-block; padding: 1px 8px; border-radius: 99px; background: var(--bg); border: 1px solid var(--border); font-size: .78rem; font-weight: 600; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 0; }
dt { color: var(--muted); font-weight: 600; font-size: .9rem; }
dd { margin: 0; }
.tabs { display: flex; gap: 6px; margin-bottom: 20px; }
.tabs a { padding: 8px 14px; border-radius: 8px; text-decoration: none; color: var(--text); font-weight: 600; }
.tabs a.active { background: var(--red); color: #fff; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 14px; margin-top: 20px; }
.tile, .tile-btn {
  display: flex; flex-direction: column; align-items: center; gap: 10px; width: 100%; height: 100%;
  padding: 22px 12px; background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  color: var(--text); text-decoration: none; font-weight: 600; text-align: center;
}
form.tile { padding: 0; border: 0; background: none; }
.tile:hover, .tile-btn:hover { border-color: var(--red); background: var(--card); }
.tile-icon {
  display: grid; place-items: center; width: 48px; height: 48px; border-radius: 12px;
  background: var(--red); color: #fff; font-size: 1.4rem; font-weight: 800; text-transform: uppercase;
}
ul { padding-left: 20px; }
@media (max-width: 600px) { dl { grid-template-columns: 1fr; } dt { margin-top: 8px; } header { padding: 12px 16px; } }