/* Convex Stack Bootcamp — design tokens per SKILL.md
   accent = learning machinery (quick checks, key ideas)
   flag   = danger (traps, warnings, security)  */

:root {
  --paper:#FBFAF8; --ink:#1B2027; --muted:#5C6470;
  --accent:#6B4EE6; --accent-soft:#F1EDFE; --accent-line:#D8CEFA;
  --flag:#C2410C;  --flag-soft:#FDF1EA;  --flag-line:#F3D3BE;
  --line:#E4E0D9;  --mono-bg:#F2EFEA;    --card:#FFFFFF;
  --c-comment:#7A8290; --c-string:#0F7A5A; --c-key:#8A3FD1; --c-num:#B4530A;
  --serif: ui-serif, Georgia, "Iowan Old Style", Cambria, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:#131519; --ink:#E4E1DB; --muted:#98A1AE;
    --accent:#A897F7; --accent-soft:#1E1B2E; --accent-line:#3A3163;
    --flag:#F5854F;  --flag-soft:#2A1A12;  --flag-line:#5C3620;
    --line:#292D35;  --mono-bg:#1A1E25;    --card:#181B21;
    --c-comment:#7E8794; --c-string:#5FD0A6; --c-key:#C4A6FF; --c-num:#F0A868;
  }
}
:root[data-theme="dark"] {
  --paper:#131519; --ink:#E4E1DB; --muted:#98A1AE;
  --accent:#A897F7; --accent-soft:#1E1B2E; --accent-line:#3A3163;
  --flag:#F5854F;  --flag-soft:#2A1A12;  --flag-line:#5C3620;
  --line:#292D35;  --mono-bg:#1A1E25;    --card:#181B21;
  --c-comment:#7E8794; --c-string:#5FD0A6; --c-key:#C4A6FF; --c-num:#F0A868;
}

* { box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:72px; }
body {
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--sans); font-size:17px; line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
.skip { position:absolute; left:-9999px; }
.skip:focus { left:12px; top:12px; background:var(--accent); color:#fff; padding:8px 14px; border-radius:8px; z-index:99; }

/* ---- top bar ---- */
.topbar { position:sticky; top:0; z-index:20; background:color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter:blur(12px); border-bottom:1px solid var(--line); }
.bar { max-width:1080px; margin:0 auto; padding:10px 20px; display:flex; align-items:center; gap:16px; flex-wrap:wrap; }
.brand { font-weight:650; color:var(--ink); text-decoration:none; letter-spacing:-.01em; white-space:nowrap; }
.brand .mark { color:var(--accent); }
.days { display:flex; gap:5px; margin-left:auto; }
.pill { width:29px; height:29px; display:grid; place-items:center; border-radius:8px; font-size:13px;
  font-variant-numeric:tabular-nums; text-decoration:none; color:var(--muted);
  border:1px solid var(--line); background:var(--card); position:relative; }
.pill:hover { color:var(--accent); border-color:var(--accent-line); }
.pill.on { background:var(--accent); border-color:var(--accent); color:#fff; font-weight:600; }
.pill.done::after { content:""; position:absolute; right:-1px; top:-1px; width:7px; height:7px;
  border-radius:50%; background:var(--c-string); border:1.5px solid var(--paper); }
.right { display:flex; gap:4px; align-items:center; }
.ghost { font-size:13.5px; color:var(--muted); text-decoration:none; padding:5px 9px; border-radius:7px;
  background:none; border:0; cursor:pointer; font-family:inherit; }
.ghost:hover { color:var(--accent); background:var(--accent-soft); }
@media (max-width:720px){ .right .ghost:not(#theme){ display:none; } }

/* ---- layout ---- */
main { max-width:760px; margin:0 auto; padding:40px 20px 24px; }
h1 { font-family:var(--serif); font-size:2.15rem; line-height:1.18; letter-spacing:-.02em; margin:.1em 0 .5em; }
h2 { font-size:1.32rem; letter-spacing:-.01em; margin:2.4em 0 .6em; padding-top:.5em; border-top:1px solid var(--line); }
h3 { font-size:1.06rem; margin:1.8em 0 .4em; }
main > h2:first-of-type { border-top:0; }
p, li { color:var(--ink); }
a { color:var(--accent); text-underline-offset:2px; }
.anchor { opacity:0; margin-left:-1em; padding-right:.35em; text-decoration:none; color:var(--muted); font-weight:400; }
h2:hover .anchor, h3:hover .anchor { opacity:1; }
hr { border:0; border-top:1px solid var(--line); margin:2.5em 0; }
strong { font-weight:640; }
main > ul, main > ol { padding-left:1.35em; }
li { margin:.3em 0; }
li::marker { color:var(--muted); }

.dayflag { display:inline-block; font-size:12px; letter-spacing:.09em; text-transform:uppercase;
  color:var(--accent); background:var(--accent-soft); border:1px solid var(--accent-line);
  padding:3px 10px; border-radius:99px; font-weight:600; }
.metastrip { font-size:14.5px; color:var(--muted); background:var(--mono-bg); border:1px solid var(--line);
  border-radius:10px; padding:11px 15px; }
.metastrip strong { color:var(--ink); }

/* ---- callouts ---- */
blockquote { margin:1.6em 0; padding:16px 20px; border-radius:12px; border:1px solid var(--line); background:var(--card); }
blockquote > :first-child { margin-top:0; } blockquote > :last-child { margin-bottom:0; }
blockquote.oneidea { border:0; border-left:3px solid var(--accent); background:var(--accent-soft);
  border-radius:0 12px 12px 0; font-family:var(--serif); font-size:1.12rem; line-height:1.55; padding:18px 22px; }
blockquote.qc { border-color:var(--accent-line); background:var(--accent-soft); }
blockquote.qc h3 { margin:0 0 .4em; color:var(--accent); font-size:.8rem; letter-spacing:.08em; text-transform:uppercase; }
blockquote.qc h3 .anchor { display:none; }
blockquote.warn { border-color:var(--flag-line); background:var(--flag-soft); }
blockquote.warn strong:first-child { color:var(--flag); }

details { margin:.9em 0 0; border-top:1px dashed var(--accent-line); padding-top:.7em; }
summary { cursor:pointer; font-weight:600; font-size:.92rem; color:var(--accent); list-style:none; }
summary::-webkit-details-marker { display:none; }
summary::before { content:"▸ "; display:inline-block; transition:transform .15s; }
details[open] summary::before { transform:rotate(90deg); }
details[open] summary { margin-bottom:.5em; }

/* ---- code ---- */
code { font-family:var(--mono); font-size:.87em; background:var(--mono-bg); padding:.15em .38em;
  border-radius:5px; border:1px solid var(--line); }
.codewrap { overflow-x:auto; margin:1.3em 0; border:1px solid var(--line); border-radius:12px; background:var(--mono-bg); }
.codewrap pre { margin:0; padding:15px 18px; }
.codewrap code { background:none; border:0; padding:0; font-size:13.6px; line-height:1.62; display:block;
  white-space:pre; color:var(--ink); }
.c { color:var(--c-comment); font-style:italic; }
.s { color:var(--c-string); }
.k { color:var(--c-key); }
.n { color:var(--c-num); }

/* ---- tables ---- */
.tablewrap { overflow-x:auto; margin:1.4em 0; border:1px solid var(--line); border-radius:12px; }
table { border-collapse:collapse; width:100%; font-size:14.6px; }
th, td { text-align:left; padding:9px 14px; border-bottom:1px solid var(--line); vertical-align:top; }
th { background:var(--mono-bg); font-weight:640; font-size:12.5px; letter-spacing:.04em;
  text-transform:uppercase; color:var(--muted); white-space:nowrap; }
tbody tr:last-child td { border-bottom:0; }
td code { font-size:.85em; }

/* ---- skill frontmatter ---- */
.fm { border:1px solid var(--line); border-radius:12px; overflow:hidden; margin:1.5em 0; }
.fmrow { display:flex; gap:14px; padding:10px 15px; border-bottom:1px solid var(--line); font-size:14.5px; }
.fmrow:last-child { border-bottom:0; }
.fmrow b { color:var(--muted); font-family:var(--mono); font-size:12.5px; min-width:88px; padding-top:2px; }

/* ---- progress + pager ---- */
.doneblock { margin:2.8em 0 0; padding:15px 18px; border:1px solid var(--accent-line);
  background:var(--accent-soft); border-radius:12px; display:flex; flex-wrap:wrap; gap:6px 14px; align-items:center; }
.doneblock label { font-weight:600; cursor:pointer; display:flex; gap:10px; align-items:center; }
.doneblock input { width:17px; height:17px; accent-color:var(--accent); cursor:pointer; }
.doneblock .hint { font-size:13px; color:var(--muted); }

.pager { display:flex; justify-content:space-between; gap:12px; margin:3em 0 0; }
.pager a { flex:1; max-width:47%; text-decoration:none; color:var(--ink); border:1px solid var(--line);
  background:var(--card); border-radius:12px; padding:12px 16px; font-weight:600; display:block; }
.pager a:hover { border-color:var(--accent-line); color:var(--accent); }
.pager .next { text-align:right; }
.pager span { display:block; font-size:11.5px; letter-spacing:.09em; text-transform:uppercase;
  color:var(--muted); font-weight:600; margin-bottom:1px; }

.foot { border-top:1px solid var(--line); margin-top:48px; padding:22px 20px 40px; }
.foot p { max-width:760px; margin:0 auto; font-size:13.5px; color:var(--muted); }

/* home page progress widget */
#progress { margin:1.6em 0; padding:16px 18px; border:1px solid var(--line); border-radius:12px; background:var(--card); }
#progress .row { display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
#progress .dot { width:26px; height:26px; border-radius:8px; display:grid; place-items:center; font-size:12px;
  border:1px solid var(--line); color:var(--muted); text-decoration:none; }
#progress .dot.done { background:var(--accent); border-color:var(--accent); color:#fff; font-weight:600; }
#progress .label { font-size:13.5px; color:var(--muted); margin-left:auto; }
#progress .reset { font-size:12.5px; }
@media print { .topbar,.pager,.doneblock,.foot,#progress { display:none; } main { max-width:none; } }