:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  background: #0f1115;
  color: #e6e6e6;
  font-size: 16px;
}

* { box-sizing: border-box; }

body { min-height: 100vh; margin: 0; background: #0f1115; color: #e6e6e6; }
a { color: #79a7ff; }
a:hover { color: #a8c4ff; }

.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; width: min(72rem, calc(100% - 2rem)); margin: 0 auto; padding: 1.25rem 0; border-bottom: 1px solid #262a33; }
.brand { color: #e6e6e6; font-weight: 650; text-decoration: none; letter-spacing: -.01em; }
.header-user { color: #aeb7c4; font-size: .875rem; }
.header-user a { margin-left: .75rem; }

main { width: min(72rem, calc(100% - 2rem)); margin: 0 auto; padding: 3.5rem 0 5rem; }
.narrow { width: min(28rem, 100%); margin: 0 auto; }
.card { background: #15181f; border: 1px solid #262a33; border-radius: .65rem; padding: 1.5rem; box-shadow: 0 .75rem 2rem rgba(0, 0, 0, .18); }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }

h1 { margin: 0 0 .4rem; font-size: clamp(1.6rem, 4vw, 2rem); font-weight: 650; letter-spacing: -.02em; }
h2 { margin: 0 0 1rem; font-size: 1.2rem; }
h3 { margin: 0 0 .5rem; font-size: 1rem; }
p { line-height: 1.55; }
.muted { color: #8b95a4; font-size: .9rem; }
.lede { margin: 0 0 1.75rem; color: #aeb7c4; }

label { display: block; margin: 0 0 .35rem; color: #c4cbd4; font-size: .875rem; }
input { display: block; width: 100%; padding: .7rem .75rem; margin: 0 0 1rem; background: #1a1d24; color: #e6e6e6; border: 1px solid #303641; border-radius: .4rem; font: inherit; }
input:focus { outline: 2px solid #5b8def; outline-offset: 1px; border-color: #5b8def; }
.input-row { display: flex; align-items: stretch; gap: .5rem; }
.input-row input { flex: 1; }
.input-row button { width: auto; margin: 0 0 1rem; }

button, .button { display: inline-flex; align-items: center; justify-content: center; min-height: 2.75rem; padding: .7rem 1rem; margin: .35rem 0 0; border: 0; border-radius: .4rem; font: inherit; font-weight: 550; text-decoration: none; cursor: pointer; transition: background .15s ease, opacity .15s ease; }
button:focus-visible, .button:focus-visible, a:focus-visible { outline: 2px solid #9bbaff; outline-offset: 2px; }
button:disabled { opacity: .6; cursor: not-allowed; }
.primary { background: #5b8def; color: #fff; }
.primary:hover { background: #4a7be0; color: #fff; }
.secondary { background: #343b49; color: #e6e6e6; }
.secondary:hover { background: #414a5b; color: #fff; }
.danger { background: #a74343; color: #fff; }
.danger:hover { background: #c05252; color: #fff; }
.button-row { display: flex; flex-wrap: wrap; gap: .65rem; margin-top: 1.25rem; }
.button-row button, .button-row .button { margin: 0; }
.full { width: 100%; }

.message { margin: 0 0 1rem; padding: .7rem .8rem; border: 1px solid; border-radius: .4rem; font-size: .9rem; }
.error { border-color: #6a2a2a; background: #2a1414; color: #f4a8a8; }
.success { border-color: #2d694a; background: #142a1e; color: #9de0b8; }
.warning { border-color: #756024; background: #2b2514; color: #ebd58f; }
[hidden] { display: none !important; }

.list { list-style: none; padding: 0; margin: 0; }
.list li { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .9rem 0; border-bottom: 1px solid #262a33; }
.list li:last-child { border-bottom: 0; }
.stat { padding: 1rem; border: 1px solid #262a33; border-radius: .5rem; background: #1a1d24; }
.stat strong { display: block; margin-top: .3rem; font-size: 1.2rem; }
.code { padding: .7rem .8rem; overflow-wrap: anywhere; border-radius: .4rem; background: #1a1d24; color: #d9e3f3; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.qr { display: grid; place-items: center; min-height: 12rem; margin: 1rem 0; padding: 1rem; border-radius: .5rem; background: #fff; }
.qr img { max-width: 100%; height: auto; image-rendering: pixelated; }
footer { margin-top: 2rem; color: #727d8c; font-size: .8rem; }

@media (prefers-color-scheme: light) {
  :root { color-scheme: light; background: #f5f7fa; color: #1a1d24; }
  body { background: #f5f7fa; color: #1a1d24; }
  .site-header { border-color: #dce1e8; }
  .brand { color: #1a1d24; }
  .header-user, .lede, .muted { color: #5e6876; }
  .card { background: #fff; border-color: #dce1e8; box-shadow: 0 .75rem 2rem rgba(28, 42, 62, .08); }
  input, .stat, .code { background: #f7f8fa; color: #1a1d24; border-color: #cbd3de; }
  .list li { border-color: #dce1e8; }
  .secondary { background: #e0e5ec; color: #26303d; }
  .secondary:hover { background: #d1d8e2; color: #1a1d24; }
}

@media (max-width: 40rem) {
  main { padding-top: 2rem; }
  .site-header { align-items: flex-start; flex-direction: column; }
  .header-user a { margin-left: .4rem; }
  .card { padding: 1.1rem; }
  .button-row { flex-direction: column; }
  .button-row button, .button-row .button { width: 100%; }
}