/* grixos.dev: the landing page, the demos and the blog. */

:root {
  /* Colours are in palettes.css. */
  --radius: 10px;
  --wide: 1080px;
  --prose: 760px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 2px; }
code, pre { font-family: var(--mono); }
code { font-size: .86em; background: var(--code-bg); padding: .12em .38em; border-radius: 4px; }
pre { margin: 0; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.01em; }
h2 { font-size: 1.75rem; margin: 0 0 .6rem; }
h3 { font-size: 1.1rem; margin: 0 0 .35rem; }
p { margin: .6rem 0; }

.wrap { max-width: var(--wide); margin: 0 auto; padding: 0 20px; }

/* Header and footer */
.site-header { border-bottom: 1px solid var(--border); background: var(--bg); position: sticky; top: 0; z-index: 10; }
.site-header .wrap { display: flex; align-items: center; gap: 24px; height: 58px; }
.brand { font: 700 1.25rem/1 var(--mono); color: var(--fg); text-decoration: none; letter-spacing: -.02em; }
.brand span { color: var(--accent); }
.site-nav { display: flex; gap: 20px; margin-left: auto; font-size: .95rem; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--fg); }
.site-footer { border-top: 1px solid var(--border); margin-top: 80px; padding: 28px 0 40px; color: var(--muted); font-size: .9rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.site-footer a { color: var(--muted); }

/* Sections */
section { padding: 64px 0 0; }
.eyebrow { font: 600 .78rem/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-bottom: .7rem; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 46rem; }

/* Hero */
.hero { padding: 56px 0 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 48px; align-items: start; }
.hero h1 { font-size: clamp(2.2rem, 4.4vw, 3.2rem); margin: 0 0 1rem; }
.hero p.lead { font-size: 1.15rem; }
.buttons { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 1.4rem; }
.button { display: inline-block; padding: 10px 18px; border-radius: 8px; font-weight: 600; text-decoration: none;
          border: 1px solid var(--accent); }
.button.primary { background: var(--accent); color: var(--accent-fg); }
.button.secondary { color: var(--accent); }
.hero-demo .caption { font-size: .88rem; color: var(--muted); margin: .2rem 0 0; }
.hero-demo grix-example { margin-top: 0; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 1.6rem; }
.card { border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; background: var(--bg-alt); }
.card p { color: var(--muted); margin: 0; font-size: .97rem; }

/* Lists of reasons */
.reasons { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 40px; margin: 1.6rem 0 0; padding: 0; list-style: none; }
.reasons li { padding-left: 1.4rem; position: relative; }
.reasons li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-family: var(--mono); }
.reasons strong { display: block; }
.reasons span { color: var(--muted); font-size: .97rem; }

/* Code */
.code-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 1.6rem; }
.code { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--term); }
.code .label { font: 600 .75rem/1 var(--mono); color: var(--term-muted); padding: 10px 14px; border-bottom: 1px solid var(--term-border);
               text-transform: uppercase; letter-spacing: .06em; }
.code pre { color: var(--term-fg); padding: 14px; font-size: .82rem; line-height: 1.55; overflow-x: auto;
             scrollbar-color: var(--term-border) transparent; }
.code .c { color: var(--term-muted); }
.code .deny { color: var(--term-err); }

/* How it works */
.diagram { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: 14px; align-items: stretch; margin-top: 1.6rem; }
.box { border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; background: var(--bg-alt); }
.box h3 { font-family: var(--mono); font-size: .95rem; }
.box ul { margin: .4rem 0 0; padding-left: 1.1rem; color: var(--muted); font-size: .93rem; }
.box.vm { border-color: var(--accent); }
.arrows { display: flex; flex-direction: column; justify-content: center; gap: 10px; font: .8rem/1.3 var(--mono); color: var(--muted); text-align: center; }
.arrows b { display: block; color: var(--fg); font-size: 1.2rem; }
.points { margin-top: 1.4rem; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 40px; }
.points p { margin: 0; font-size: .97rem; }

/* Tables */
.table-wrap { overflow-x: auto; margin-top: 1.4rem; border: 1px solid var(--border); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
th { background: var(--bg-alt); font-weight: 600; }
td:first-child { font-family: var(--mono); font-size: .88rem; white-space: nowrap; }

.note { border-left: 3px solid var(--accent); padding: 4px 0 4px 16px; color: var(--muted); margin-top: 1.4rem; }

/* Blog */
.prose { max-width: var(--prose); margin: 0 auto; padding: 0 20px; }
.prose h1 { font-size: clamp(2rem, 4vw, 2.6rem); margin: 48px 0 .4rem; }
.prose h2 { font-size: 1.45rem; margin: 2.4rem 0 .6rem; }
.prose .byline { color: var(--muted); font-size: .95rem; margin-bottom: 2rem; }
.prose p { margin: 1.05rem 0; }
.prose figure { margin: 1.8rem 0; }

.prose figcaption { font-size: .9rem; color: var(--muted); margin-top: .4rem; }
.prose figure grix-example { margin: 0; }
.post-list { list-style: none; padding: 0; margin: 1.5rem 0; }
.post-list li { padding: 18px 0; border-bottom: 1px solid var(--border); }
.post-list a { font-size: 1.2rem; font-weight: 600; text-decoration: none; }
.post-list p { color: var(--muted); margin: .3rem 0 0; }

.isolation-warning { border: 1px solid var(--deny); color: var(--deny); border-radius: var(--radius); padding: 10px 14px; margin: 1rem 0; }

@media (max-width: 860px) {
  .hero, .cards, .reasons, .code-grid, .points { grid-template-columns: minmax(0, 1fr); }
  .hero { gap: 28px; padding-top: 36px; }
  .diagram { grid-template-columns: minmax(0, 1fr); }
  .arrows { flex-direction: row; justify-content: center; }
  .site-nav { gap: 14px; font-size: .9rem; }
  section { padding-top: 48px; }
}
@media (max-width: 520px) {
  .site-nav a.hide-sm { display: none; }
}

.hero-demo .code { margin-bottom: 14px; }
#blog h2 a { text-decoration: none; }
#blog h2 a:hover { text-decoration: underline; }

/* Install */
.steps { list-style: none; counter-reset: step; padding: 0; margin: 1.6rem 0 0; display: grid; gap: 22px;
         grid-template-columns: minmax(0, 1fr); }
.steps > li { counter-increment: step; position: relative; padding-left: 46px; min-width: 0; }
.steps > li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 30px; height: 30px;
  border-radius: 50%; background: var(--accent); color: var(--accent-fg); font: 700 .9rem/30px var(--mono); text-align: center; }
.steps p { color: var(--muted); margin: .2rem 0 .7rem; }
.steps .code pre { font-size: .8rem; }
.platform-notes { margin-top: 1.8rem; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 22px; background: var(--bg-alt); }
.platform-notes ul { margin: .4rem 0 0; padding-left: 1.2rem; }
.platform-notes li { margin: .45rem 0; font-size: .96rem; }
@media (max-width: 520px) { .steps > li { padding-left: 0; padding-top: 40px; } }

/* The hero's announcement */
.announce { display: inline-flex; align-items: center; gap: 10px; margin-top: 1.4rem; padding: 9px 16px 9px 9px;
  border-radius: 999px; border: 1px solid var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: var(--fg); font-weight: 600; text-decoration: none; }
.announce:hover { background: color-mix(in srgb, var(--accent) 18%, transparent); }
.announce .tag { background: var(--accent); color: var(--accent-fg); border-radius: 999px; padding: 2px 10px;
  font: 700 .72rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.announce + .buttons { margin-top: 1rem; }