:root {
  --bg: #f6f7f9; --card: #fff; --text: #1d2330; --muted: #6b7385; --border: #e2e5ea;
  --accent: #2f6fed; --accent-text: #fff; --high: #1f9d55; --mid: #d69e2e; --low: #d64545;
  --code: #eef1f6;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14161b; --card: #1d2027; --text: #e4e7ee; --muted: #9aa1b2; --border: #2e323c;
          --accent: #5b8cff; --code: #262a33; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
       background: var(--bg); color: var(--text); }
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.5rem; margin: .5rem 0 1rem; }
h2 { font-size: 1.2rem; margin: 1.5rem 0 .5rem; }
h4 { margin: 1rem 0 .3rem; }
code { background: var(--code); padding: 1px 5px; border-radius: 4px; }
.nav { display: flex; gap: 16px; align-items: center; padding: 10px 16px; background: var(--card);
       border-bottom: 1px solid var(--border); flex-wrap: nowrap; overflow-x: auto; white-space: nowrap; }
.nav .brand { font-weight: 700; color: var(--text); }
.spacer { flex: 1; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px;
        margin-bottom: 16px; }
.muted { color: var(--muted); font-size: .9em; }
.inline { display: inline; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 700px) { .cols { grid-template-columns: 1fr; } }
label { display: block; margin: 8px 0 4px; font-weight: 500; }
label.check { display: inline-flex; gap: 6px; align-items: center; font-weight: 400; margin-right: 12px; }
input[type=text], input[type=password], input[type=number], input[type=url], select, textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--bg); color: var(--text); font: inherit; }
textarea { min-height: 120px; resize: vertical; }
button, .btn { background: var(--accent); color: var(--accent-text); border: 0; border-radius: 6px;
  padding: 8px 14px; font: inherit; cursor: pointer; display: inline-block; }
button.secondary, .btn.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
button.danger { background: var(--low); }
.btn-link { background: none; color: var(--accent); padding: 0; }
.btn-small { padding: 4px 10px; font-size: .9em; }
table { width: 100%; border-collapse: collapse; }
.card { overflow-x: auto; }
@media (max-width: 700px) {
  .hide-mobile { display: none; }
  main { padding: 10px; }
  .row.stack-mobile { flex-direction: column; align-items: stretch; }
}
td, th { padding: 6px 8px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; background: var(--card);
         border: 1px solid var(--border); }
.flash-error { border-color: var(--low); color: var(--low); }
.score { display: inline-block; min-width: 42px; text-align: center; padding: 2px 8px; border-radius: 6px;
         font-weight: 700; color: #fff; background: var(--muted); }
.s-high { background: var(--high); } .s-mid { background: var(--mid); } .s-low { background: var(--low); }
.score-line { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; }
.issue { border-left: 3px solid var(--border); padding: 4px 10px; margin: 6px 0; }
.sev-critical { border-color: var(--low); } .sev-major { border-color: var(--mid); } .sev-minor { border-color: var(--muted); }
.tag { font-size: .75em; background: var(--code); padding: 1px 6px; border-radius: 4px; }
blockquote { margin: 6px 0; padding: 8px 12px; background: var(--code); border-radius: 6px; white-space: pre-wrap; }
.letter { white-space: pre-wrap; background: var(--code); padding: 14px; border-radius: 8px; margin: 8px 0; }
.pre { white-space: pre-wrap; max-height: 420px; overflow: auto; background: var(--code); padding: 12px; border-radius: 8px; }
details > summary { cursor: pointer; color: var(--accent); margin: 6px 0; }
.feature { border-top: 1px solid var(--border); padding-top: 10px; margin-top: 10px; }
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--border);
           border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.status-done { color: var(--high); } .status-failed { color: var(--low); } .status-running, .status-queued { color: var(--mid); }
.board { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 900px) { .board { grid-template-columns: 1fr; } .column.empty { display: none; } }
.tile select { margin-top: 6px; padding: 4px; font-size: .9em; }
.column h2 { margin-top: 0; font-size: 1rem; }
.tile { border: 1px solid var(--border); border-radius: 8px; padding: 8px; margin-bottom: 8px; background: var(--bg); }
.steps li { margin: 6px 0; }
.hint { border: 1px dashed var(--accent); border-radius: 8px; padding: 8px 10px; margin: 10px 0; }
.admin-new { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 12px; }
@media (max-width: 700px) { .admin-new { grid-template-columns: 1fr; } }
.steps li.done { color: var(--muted); }
.login { max-width: 360px; margin: 10vh auto; }