/* Plinth — production-grade starting points for developers building with AI */

:root {
  --bg: #0a0b0d;
  --bg-elev: #111317;
  --bg-elev-2: #16191f;
  --line: #23272f;
  --line-soft: #1a1d23;
  --fg: #e7e9ee;
  --fg-dim: #9aa1ad;
  --fg-faint: #6b7280;
  --accent: #6ee7b7;        /* mint — "build/ok" */
  --accent-2: #38bdf8;      /* sky — links */
  --warn: #fbbf24;
  --danger: #f87171;
  --maxw: 1080px;
  --radius: 12px;
  --mono: "SFMono-Regular", ui-monospace, "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 75% -10%, rgba(56,189,248,0.07), transparent 60%),
    radial-gradient(900px 500px at 10% 10%, rgba(110,231,183,0.05), transparent 55%),
    var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Typography ---------- */
h1, h2, h3 { font-weight: 650; letter-spacing: -0.03em; line-height: 1.1; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.4rem, 6vw, 4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.2rem; letter-spacing: -0.02em; }
p { margin: 0 0 1.1em; color: var(--fg-dim); }
strong { color: var(--fg); font-weight: 600; }
code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--bg-elev-2);
  border: 1px solid var(--line);
  padding: 0.12em 0.42em;
  border-radius: 6px;
  color: var(--accent);
}
pre {
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 1.6;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  overflow-x: auto;
  margin: 0 0 1.4em;
}
pre code { background: none; border: none; padding: 0; color: var(--fg); }
.mono { font-family: var(--mono); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(150%) blur(12px);
  background: rgba(10,11,13,0.72);
  border-bottom: 1px solid var(--line-soft);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.brand:hover { text-decoration: none; }
.brand .mark {
  width: 22px; height: 22px;
  display: inline-block;
}
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { color: var(--fg-dim); font-size: 0.93rem; font-weight: 500; }
.nav a:hover { color: var(--fg); text-decoration: none; }
.nav .btn { color: var(--bg); }
@media (max-width: 680px) {
  .nav a.navlink { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #03120b;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 11px 20px;
  border-radius: 10px;
  border: 1px solid transparent;
  letter-spacing: -0.01em;
  transition: transform 0.12s ease, box-shadow 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 8px 30px -10px rgba(110,231,183,0.5);
  background: #8af0c6;
}
.btn-ghost {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: var(--bg-elev-2); box-shadow: none; }
.btn-lg { padding: 14px 26px; font-size: 1.02rem; }

/* ---------- Hero ---------- */
.hero { padding: clamp(56px, 11vw, 120px) 0 clamp(40px, 7vw, 80px); position: relative; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(110,231,183,0.08);
  border: 1px solid rgba(110,231,183,0.2);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 26px;
}
.hero h1 { max-width: 16ch; }
.hero .lede {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--fg-dim);
  max-width: 60ch;
  margin: 18px 0 32px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero-meta {
  margin-top: 26px;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--fg-faint);
}
.hero-meta .ok { color: var(--accent); }

/* terminal card */
.term {
  margin-top: 48px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 40px 80px -40px rgba(0,0,0,0.8);
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-elev-2);
}
.term-bar .dot { width: 11px; height: 11px; border-radius: 50%; background: #2a2f38; }
.term-bar .name { margin-left: 10px; font-family: var(--mono); font-size: 0.78rem; color: var(--fg-faint); }
.term pre { margin: 0; border: 0; border-radius: 0; background: transparent; font-size: 0.82rem; }
.term .c-com { color: var(--fg-faint); }
.term .c-ok { color: var(--accent); }
.term .c-key { color: var(--accent-2); }
.term .c-warn { color: var(--warn); }

/* ---------- Sections ---------- */
section { padding: clamp(48px, 8vw, 88px) 0; }
.section-head { max-width: 60ch; margin-bottom: 44px; }
.section-head .kicker {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 14px;
}
.divider { border: 0; border-top: 1px solid var(--line-soft); margin: 0; }

/* grid of features */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}
.cell {
  background: var(--bg);
  padding: 26px 24px;
  transition: background 0.2s ease;
}
.cell:hover { background: var(--bg-elev); }
.cell .ic { font-family: var(--mono); color: var(--accent); font-size: 0.85rem; margin-bottom: 12px; }
.cell h3 { margin-bottom: 8px; }
.cell p { font-size: 0.95rem; margin: 0; }

/* two-col */
.cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 820px) { .cols { grid-template-columns: 1fr; gap: 32px; } }

.painlist { list-style: none; padding: 0; margin: 0; }
.painlist li {
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
}
.painlist li:first-child { border-top: 0; }
.painlist .x { color: var(--danger); font-family: var(--mono); font-weight: 700; }
.painlist .v { color: var(--accent); font-family: var(--mono); font-weight: 700; }
.painlist b { color: var(--fg); }
.painlist span.t { color: var(--fg-dim); font-size: 0.95rem; }

/* proof banner */
.proof {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 30px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.proof .big { font-family: var(--mono); font-size: 1.05rem; color: var(--fg); }
.proof .big b { color: var(--accent); }

/* price card */
.cta-final {
  background:
    radial-gradient(600px 300px at 50% 0%, rgba(110,231,183,0.08), transparent 70%),
    var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: clamp(36px, 6vw, 60px);
  text-align: center;
}
.cta-final h2 { margin-bottom: 14px; }
.cta-final p { max-width: 52ch; margin-left: auto; margin-right: auto; }
.price {
  font-family: var(--mono);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.03em;
  margin: 8px 0 4px;
}
.price small { font-size: 0.9rem; color: var(--fg-faint); font-weight: 400; }

/* ---------- Article / guides ---------- */
.article { padding: clamp(48px, 8vw, 80px) 0; }
.article .wrap { max-width: 720px; }
.article .crumb { font-family: var(--mono); font-size: 0.8rem; color: var(--fg-faint); margin-bottom: 22px; }
.article .crumb a { color: var(--fg-dim); }
.article h1 { font-size: clamp(2rem, 5vw, 2.9rem); margin-bottom: 16px; }
.article .meta { color: var(--fg-faint); font-size: 0.85rem; font-family: var(--mono); margin-bottom: 40px; }
.article h2 { margin-top: 1.8em; font-size: 1.5rem; }
.article h3 { margin-top: 1.5em; }
.article ul, .article ol { color: var(--fg-dim); padding-left: 1.3em; margin: 0 0 1.3em; }
.article li { margin-bottom: 0.5em; }
.article blockquote {
  margin: 1.5em 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--accent);
  color: var(--fg);
}
.callout {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-left: 3px solid var(--warn);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 1.6em 0;
  font-size: 0.95rem;
}
.callout .lab { font-family: var(--mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--warn); display: block; margin-bottom: 6px; }
.softcta {
  margin-top: 48px;
  padding: 28px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.softcta h3 { margin-top: 0; }
.softcta p { margin-bottom: 18px; }

/* guides index */
.guide-list { display: grid; gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden; }
.guide-list a {
  display: block;
  background: var(--bg);
  padding: 22px 24px;
  color: var(--fg);
  transition: background 0.15s ease;
}
.guide-list a:hover { background: var(--bg-elev); text-decoration: none; }
.guide-list .g-title { font-weight: 600; font-size: 1.08rem; letter-spacing: -0.02em; }
.guide-list .g-desc { color: var(--fg-dim); font-size: 0.92rem; margin-top: 4px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line-soft);
  padding: 48px 0;
  margin-top: 40px;
}
.site-footer .wrap { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.site-footer .col h4 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-faint); margin: 0 0 12px; font-family: var(--mono); font-weight: 500; }
.site-footer .col a { display: block; color: var(--fg-dim); font-size: 0.92rem; margin-bottom: 7px; }
.site-footer .col a:hover { color: var(--fg); }
.site-footer .copy { color: var(--fg-faint); font-size: 0.85rem; align-self: flex-end; }

/* ---------- Scroll reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}