/* SDLC pipeline walkthrough — standalone docs site. Simple, theme-aware, responsive. */
:root {
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;

  --ground: #f4f6f9;
  --surface: #ffffff;
  --surface-2: #eceff4;
  --ink: #131820;
  --ink-soft: #48525f;
  --ink-faint: #7a8494;
  --line: #dde2ea;
  --line-strong: #c8d0db;
  --accent: #0e7c95;
  --accent-2: #0891b2;
  --done: #067a55;
  --wait: #a15c07;
  --lock: #6d3fd1;
  --stop: #d01e50;
  --term-bg: #0a0e14;
  --term-ink: #c6d0dd;
  --term-dim: #6b7789;
  --radius: 12px;
  --maxw: 940px;
  --shadow: 0 1px 2px rgba(17, 24, 39, .05), 0 8px 28px rgba(17, 24, 39, .06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0b0e13; --surface: #12161d; --surface-2: #191f28;
    --ink: #e8edf4; --ink-soft: #a4aebe; --ink-faint: #6a7688;
    --line: #222a35; --line-strong: #303a48;
    --accent: #34d6ec; --accent-2: #22b8d4;
    --done: #34d399; --wait: #fbbf24; --lock: #a78bfa; --stop: #fb6f8e;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 34px rgba(0, 0, 0, .4);
  }
}
:root[data-theme="light"] {
  --ground: #f4f6f9; --surface: #ffffff; --surface-2: #eceff4;
  --ink: #131820; --ink-soft: #48525f; --ink-faint: #7a8494;
  --line: #dde2ea; --line-strong: #c8d0db; --accent: #0e7c95; --accent-2: #0891b2;
  --done: #067a55; --wait: #a15c07; --lock: #6d3fd1; --stop: #d01e50;
  --shadow: 0 1px 2px rgba(17, 24, 39, .05), 0 8px 28px rgba(17, 24, 39, .06);
}
:root[data-theme="dark"] {
  --ground: #0b0e13; --surface: #12161d; --surface-2: #191f28;
  --ink: #e8edf4; --ink-soft: #a4aebe; --ink-faint: #6a7688;
  --line: #222a35; --line-strong: #303a48; --accent: #34d6ec; --accent-2: #22b8d4;
  --done: #34d399; --wait: #fbbf24; --lock: #a78bfa; --stop: #fb6f8e;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 34px rgba(0, 0, 0, .4);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 70px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font-family: var(--sans); font-size: 17px; line-height: 1.65;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
code { font-family: var(--mono); font-size: .86em; }

/* header */
header.site {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
header.site .bar { display: flex; align-items: center; gap: 16px; height: 56px; }
header.site .brand { font-family: var(--mono); font-weight: 600; font-size: 14px; letter-spacing: .02em; white-space: nowrap; }
header.site .brand b { color: var(--accent); }
header.site nav { display: flex; gap: 2px; margin-left: auto; overflow-x: auto; }
header.site nav a {
  font-family: var(--mono); font-size: 12px; color: var(--ink-faint); padding: 6px 9px; border-radius: 7px; white-space: nowrap;
}
header.site nav a:hover { color: var(--ink); background: var(--surface-2); text-decoration: none; }
header.site .util { display: flex; gap: 6px; align-items: center; }

/* Mobile: the section links don't fit beside the brand + controls, so drop them to a
   full-width, horizontally scrollable second row below the top bar. */
@media (max-width: 720px) {
  header.site .bar { flex-wrap: wrap; height: auto; padding-top: 8px; padding-bottom: 6px; column-gap: 12px; row-gap: 6px; }
  header.site .brand { order: 1; }
  header.site .util { order: 2; margin-left: auto; }
  header.site nav {
    order: 3; flex-basis: 100%; width: 100%; margin-left: 0;
    overflow-x: auto; -webkit-overflow-scrolling: touch;
    border-top: 1px solid var(--line); padding-top: 6px;
    scrollbar-width: none;   /* hide the scrollbar; the row still scrolls by swipe */
  }
  header.site nav::-webkit-scrollbar { display: none; }
  header.site nav a { padding: 7px 11px; }   /* larger touch targets */
  html { scroll-padding-top: 104px; }         /* clear the taller two-row header on anchor jumps */
}

button.theme {
  font: 600 12px/1 var(--mono); color: var(--ink-soft); background: var(--surface-2); border: 1px solid var(--line);
  border-radius: 8px; padding: 7px 10px; cursor: pointer;
}
button.theme:hover { color: var(--ink); border-color: var(--line-strong); }

/* hero */
.hero { padding: 70px 0 44px; border-bottom: 1px solid var(--line); }
.eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
h1 { font-size: clamp(32px, 5.5vw, 50px); line-height: 1.05; letter-spacing: -.02em; font-weight: 680; margin: 16px 0 0; text-wrap: balance; }
.lede { font-size: 20px; color: var(--ink-soft); margin: 20px 0 0; max-width: 46ch; }
.facts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.fact { font-family: var(--mono); font-size: 12px; padding: 7px 11px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); color: var(--ink-soft); }
.fact b { color: var(--ink); }

/* video */
.player { margin: 26px 0 6px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-strong); box-shadow: var(--shadow); background: #06090e; }
.player video { display: block; width: 100%; height: auto; background: #06090e; }
.vcap { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); margin-top: 10px; }
.vcap b { color: var(--ink-soft); }

/* sections */
section { padding: 56px 0; border-bottom: 1px solid var(--line); }
.chapter { display: flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); }
.chapter .n { color: var(--accent); font-weight: 700; }
.chapter .rule { flex: 1; height: 1px; background: var(--line); }
h2 { font-size: clamp(25px, 4vw, 33px); line-height: 1.12; letter-spacing: -.015em; font-weight: 660; margin: 14px 0 0; text-wrap: balance; }
.achieves { font-size: 15px; font-family: var(--mono); color: var(--accent); margin-top: 14px; letter-spacing: .01em; }
p { margin: 14px 0; max-width: 66ch; color: var(--ink-soft); }
p strong, li strong { color: var(--ink); font-weight: 620; }
h3 { font-size: 18px; margin: 30px 0 6px; font-weight: 640; letter-spacing: -.01em; }
ul.clean { list-style: none; padding: 0; margin: 16px 0; }
ul.clean li { position: relative; padding-left: 22px; margin: 9px 0; color: var(--ink-soft); max-width: 66ch; }
ul.clean li::before { content: ""; position: absolute; left: 4px; top: 11px; width: 6px; height: 6px; border-radius: 2px; background: var(--accent); }

/* screenshot figures */
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; margin: 24px 0 6px; }
figure { margin: 0; }
figure img { width: 100%; height: auto; display: block; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); background: #0b0e13; }
figcaption { font-size: 13px; color: var(--ink-soft); margin-top: 8px; line-height: 1.45; }

/* code + terminal */
pre.code { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; overflow-x: auto; box-shadow: var(--shadow); margin: 20px 0; }
pre.code code { font-size: 13px; line-height: 1.6; color: var(--ink); white-space: pre; }
.filetab { font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint); margin: 22px 0 -8px; }
.filetab::before { content: "▸ "; color: var(--accent); }
.term { background: var(--term-bg); border-radius: var(--radius); overflow: hidden; box-shadow: 0 12px 40px rgba(0, 0, 0, .28); margin: 20px 0; border: 1px solid #1d2531; }
.term .barx { display: flex; gap: 7px; padding: 10px 14px; border-bottom: 1px solid #1d2531; align-items: center; }
.term .barx i { width: 11px; height: 11px; border-radius: 50%; background: #313b4a; }
.term .barx .cmd { font-family: var(--mono); font-size: 12px; color: var(--term-dim); margin-left: 8px; }
.term pre { margin: 0; padding: 16px 18px; overflow-x: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.6; color: var(--term-ink); white-space: pre; }
.term .g { color: #35c98a; } .term .a { color: #e6b25a; } .term .v { color: #b18cf0; }
.term .r { color: #f47088; } .term .c { color: #45c4dc; } .term .d { color: var(--term-dim); } .term .w { color: #e8edf4; }
.yk { color: var(--accent-2); } .yc { color: var(--ink-faint); font-style: italic; } .ys { color: var(--done); }

/* callout */
.note { border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 10px 10px 0; padding: 13px 16px; margin: 20px 0; font-size: 14.5px; color: var(--ink-soft); box-shadow: var(--shadow); }
.note b { color: var(--ink); }
.note .lbl { font-family: var(--mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); font-weight: 700; display: block; margin-bottom: 4px; }

/* pillars */
.pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin: 24px 0; }
.pillar { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 17px; }
.pillar .pt { font-weight: 640; font-size: 16px; }
.pillar .pd { font-size: 14px; color: var(--ink-soft); margin-top: 6px; }

/* base vs example */
.basecols { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; margin: 20px 0; }
.basecol { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; }
.basecol.example { border-style: dashed; }
.basecol .bh { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; font-weight: 700; margin-bottom: 6px; }
.basecol.base .bh { color: var(--done); }
.basecol.example .bh { color: var(--wait); }
.basecol ul.clean li { max-width: none; }

/* run cards */
.runs { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 10px; margin: 20px 0; }
.run { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 13px 15px; }
.run .t { font-family: var(--mono); font-size: 12.5px; color: var(--accent); font-weight: 640; }
.run .d { font-size: 13px; color: var(--ink-soft); margin-top: 3px; }
a.run.dl { display: block; transition: border-color .15s ease, transform .15s ease; }
a.run.dl:hover { text-decoration: none; border-color: var(--accent); transform: translateY(-1px); }
a.run.dl:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

footer { padding: 44px 0 72px; }
footer .fine { font-family: var(--mono); font-size: 12.5px; color: var(--ink-faint); margin-top: 20px; }