/* Shared styles for the Tutorials index and every guide page.
   Uses the same design tokens as the main site (see ../styles.css). */

:root {
  --bg: #faf9f5;
  --band: #f2efe7;
  --ink: #14181b;
  --body: #3c443f;
  --muted: #98a09a;
  --border: #e2ddd0;
  --border-band: #d5cfc0;
  --chip: #efece3;
  --green: #00a35f;
  --green-t: #3dffa0;
  --link: #00834c;
  --magenta: #d6008f;
  --amber: #c77d00;
  --amber-note: #8a5a00;
  --term-bg: #0c1310;
  --term-border: #1c2a24;
  --term-text: #8fb8a3;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: 'Archivo', sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--magenta); }
::selection { background: var(--green-t); color: var(--ink); }
img { max-width: 100%; }

/* ---- slim shared nav (guide + index) ---- */
.t-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
  padding: 14px 36px;
  background: rgba(250,249,245,0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.t-nav .wordmark {
  font-family: 'IBM Plex Mono', monospace; font-weight: 600; color: var(--ink); font-size: 15px;
}
.t-nav .wordmark .kw { color: var(--green); }
.t-nav .spacer { margin-left: auto; }
.t-nav a.navlink { color: var(--ink); font-weight: 600; font-size: 14px; }
.t-nav a.navlink:hover { color: var(--green); }
.t-nav a.pill {
  font-family: 'IBM Plex Mono', monospace; font-size: 13px; font-weight: 600;
  background: var(--ink); color: var(--green-t);
  padding: 9px 18px; border-radius: 8px; white-space: nowrap;
}
.t-nav a.pill:hover { background: #232a26; color: var(--green-t); }

.wrap { max-width: 1140px; margin: 0 auto; padding: 0 36px; }
.wrap-narrow { max-width: 820px; margin: 0 auto; padding: 0 36px; }

/* ---- index page ---- */
.idx-head { padding: 72px 0 8px; }
.idx-kicker { font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--green); margin-bottom: 10px; }
.idx-title { margin: 0 0 12px; font-size: 48px; font-weight: 800; letter-spacing: -1.5px; color: var(--ink); line-height: 1.02; }
.idx-lead { margin: 0 0 26px; font-size: 17px; max-width: 64ch; }

.tagbar { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; padding: 6px 0 30px; }
.tagbar .lbl { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted); margin-right: 4px; }
.tagchip {
  font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; font-weight: 600;
  padding: 6px 12px; border-radius: 999px; cursor: pointer;
  border: 1.5px solid var(--border-band); background: #fff; color: var(--body);
  transition: background .12s, color .12s, border-color .12s;
}
.tagchip:hover { border-color: var(--ink); }
.tagchip.active { color: #fff; border-color: transparent; }
.tagchip .n { opacity: .7; font-weight: 500; }

.guide-list { display: grid; gap: 18px; padding-bottom: 80px; }
.guide-card {
  display: grid; grid-template-columns: 1fr auto; gap: 18px;
  background: #fff; border: 1px solid var(--border); border-radius: 14px;
  padding: 24px 26px; transition: border-color .12s, box-shadow .12s, transform .12s;
}
.guide-card:hover { border-color: var(--green); box-shadow: 0 10px 30px -18px rgba(20,24,27,0.35); transform: translateY(-1px); }
.guide-card a.card-title { color: var(--ink); font-size: 22px; font-weight: 800; letter-spacing: -0.5px; }
.guide-card a.card-title:hover { color: var(--green); }
.guide-card .card-sum { font-size: 14.5px; margin: 8px 0 14px; color: var(--body); }
.guide-card .card-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.guide-card .card-tag {
  font-family: 'IBM Plex Mono', monospace; font-size: 11.5px; font-weight: 600;
  padding: 3px 9px; border-radius: 999px; color: #fff;
}
.guide-card .card-meta {
  font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted);
  text-align: right; white-space: nowrap; display: flex; flex-direction: column; gap: 5px; align-items: flex-end;
}
.guide-card .card-meta .diff { color: var(--green); font-weight: 600; }
.empty { font-family: 'IBM Plex Mono', monospace; color: var(--muted); padding: 20px 0 80px; }

/* ---- guide (article) page ---- */
.guide-hero { padding: 56px 0 10px; border-bottom: 1px solid var(--border); }
.crumbs { font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; color: var(--muted); margin-bottom: 14px; }
.crumbs a { color: var(--green); }
.guide-h1 { margin: 0 0 12px; font-size: 42px; font-weight: 900; letter-spacing: -2px; color: var(--ink); line-height: 1.02; }
.guide-sub { font-size: 18px; color: var(--body); max-width: 68ch; margin: 0 0 18px; }
.guide-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; color: var(--muted); padding-bottom: 22px; }
.guide-meta .card-tag { font-size: 11.5px; font-weight: 600; padding: 3px 9px; border-radius: 999px; color: #fff; }
.guide-meta a.card-tag:hover { filter: brightness(1.08); }

article.guide { padding: 34px 0 90px; font-size: 16.5px; line-height: 1.72; }
article.guide h2 {
  font-size: 27px; font-weight: 800; letter-spacing: -0.8px; color: var(--ink);
  margin: 48px 0 6px; padding-top: 14px; border-top: 1px solid var(--border);
}
article.guide h2:first-of-type { border-top: none; padding-top: 0; margin-top: 8px; }
article.guide h3 { font-size: 19px; font-weight: 800; color: var(--ink); margin: 30px 0 4px; }
article.guide p { margin: 12px 0; }
article.guide ul, article.guide ol { margin: 12px 0; padding-left: 24px; }
article.guide li { margin: 6px 0; }
article.guide strong { color: var(--ink); }
article.guide a { font-weight: 600; }

article.guide code, .mono { font-family: 'IBM Plex Mono', monospace; }
article.guide :not(pre) > code {
  font-size: 0.86em; background: var(--chip); color: var(--ink);
  padding: 2px 6px; border-radius: 5px;
}
article.guide pre {
  background: var(--term-bg); color: var(--term-text);
  border-radius: 12px; padding: 16px 18px; overflow-x: auto;
  font-family: 'IBM Plex Mono', monospace; font-size: 13px; line-height: 1.6;
  box-shadow: 0 20px 50px -22px rgba(20,24,27,0.4);
  margin: 18px 0;
}
article.guide pre code { background: none; padding: 0; color: inherit; font-size: inherit; }
article.guide pre .c { color: #5a7a68; }      /* comment / prompt */
article.guide pre .g { color: var(--green-t); } /* highlight */

/* callouts */
.callout { border-radius: 12px; padding: 14px 18px; margin: 20px 0; font-size: 15px; line-height: 1.6; }
.callout .h { font-family: 'IBM Plex Mono', monospace; font-weight: 600; font-size: 13px; margin-bottom: 5px; display: block; }
.callout.warn { background: #fff8ec; border: 1px solid #f0d9a8; }
.callout.warn .h { color: var(--amber); }
.callout.danger { background: #fdf0f6; border: 1px solid #f2c3dd; }
.callout.danger .h { color: var(--magenta); }
.callout.tip { background: #eefaf3; border: 1px solid #bfe6d2; }
.callout.tip .h { color: var(--green); }
.callout.info { background: #eef6f8; border: 1px solid #bcdde6; }
.callout.info .h { color: #2b8a9e; }

/* figures — where screenshots/photos go */
figure.shot { margin: 22px 0; }
figure.shot .frame {
  border: 1px solid var(--border); border-radius: 12px; background: var(--band);
  aspect-ratio: 16 / 9; display: flex; align-items: center; justify-content: center;
  color: var(--muted); font-family: 'IBM Plex Mono', monospace; font-size: 13px; text-align: center; padding: 20px;
  overflow: hidden;
}
figure.shot img { display: block; width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--border); }
figure.shot figcaption { font-size: 13px; color: var(--muted); margin-top: 8px; text-align: center; }

/* pinout / spec table */
.ptable { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14.5px; }
.ptable th, .ptable td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); }
.ptable th { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--green); font-weight: 600; }
.ptable td.mono { font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--ink); }

.step-nav { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; border-top: 1px solid var(--border); padding: 22px 0 0; margin-top: 20px; font-family: 'IBM Plex Mono', monospace; font-size: 13px; }

footer.t-foot {
  border-top: 1px solid var(--border); background: var(--ink); color: #9aa5a0;
  font-family: 'IBM Plex Mono', monospace; font-size: 12.5px;
}
footer.t-foot .wrap { padding-top: 30px; padding-bottom: 30px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
footer.t-foot a { color: var(--green-t); }

@media (max-width: 720px) {
  .idx-title { font-size: 36px; }
  .guide-h1 { font-size: 32px; }
  .guide-card { grid-template-columns: 1fr; }
  .guide-card .card-meta { text-align: left; align-items: flex-start; flex-direction: row; gap: 14px; }
  .wrap, .wrap-narrow { padding: 0 22px; }
  .t-nav { padding: 12px 22px; gap: 16px; }
}