/* Warden — warden.bytesbrains.com
   Paper/ink family (shared with Maktub) but its own deep-indigo identity + mono. */

:root {
  --paper:      #f7f4ee;
  --paper-deep: #f1ece2;
  --paper-edge: #ece6da;
  --ink:        #14151a;
  --ink-soft:   #3b3d44;
  --ink-faint:  #6b6d75;
  --rule:       rgba(20,21,26,0.14);
  --rule-strong:rgba(20,21,26,0.26);
  --accent:     #27406a;   /* deep indigo — cryptographic, cool */
  --accent-ink: #1c3052;

  --serif: "Source Serif 4", Georgia, serif;
  --ui:    "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --max-content: 760px;
  --max-wide:    1080px;
  --gutter: clamp(1.25rem, 5vw, 3rem);
  --s1:.5rem; --s2:1rem; --s3:1.5rem; --s4:2rem; --s5:3rem; --s6:4.5rem; --s7:7rem;
}

*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--serif); font-size: 1.0625rem; line-height: 1.7;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.022'/%3E%3C/svg%3E");
  text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased;
}
h1,h2,h3 { font-weight: 400; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: inherit; }
code { font-family: var(--mono); font-size: .88em; background: var(--paper-edge); padding: .08em .4em; border-radius: 3px; color: var(--accent-ink); }

.eyebrow { font-family: var(--ui); font-weight: 500; font-size: .72rem; text-transform: uppercase; letter-spacing: .15em; color: var(--ink-faint); margin-bottom: var(--s3); }
.center { text-align: center; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: var(--s2); top: var(--s2); background: var(--ink); color: var(--paper); padding: .6rem 1rem; font-family: var(--ui); z-index: 100; }

.btn { display: inline-block; font-family: var(--ui); font-weight: 500; font-size: .9375rem; padding: .8rem 1.4rem; border-radius: 4px; text-decoration: none; border: 1px solid transparent; transition: background .18s ease; }
.btn--accent { background: var(--accent); color: #f4f1ea; }
.btn--accent:hover { background: var(--accent-ink); }
.textlink { font-family: var(--ui); font-size: .9375rem; color: var(--ink); text-decoration: none; background-image: linear-gradient(var(--accent),var(--accent)); background-size: 0 1px; background-repeat: no-repeat; background-position: left 92%; transition: background-size .2s ease; padding-bottom: 2px; }
.textlink:hover { background-size: 100% 1px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.topbar { background: var(--accent); color: #ede9f0; font-family: var(--ui); font-size: .8125rem; line-height: 1.5; text-align: center; padding: .6rem var(--gutter); }
.topbar strong { color: #fff; }

.nav { position: sticky; top: 0; z-index: 50; background: var(--paper); border-bottom: 1px solid transparent; transition: border-color .25s ease; }
.nav.is-scrolled { border-bottom-color: var(--rule); }
.nav__inner { max-width: var(--max-wide); margin: 0 auto; padding: .8rem var(--gutter); display: flex; align-items: center; justify-content: space-between; gap: var(--s3); }
.brand { display: inline-flex; align-items: center; gap: .55rem; text-decoration: none; color: var(--ink); }
.brand__mark { width: 26px; height: 26px; }
.brand__word { font-family: var(--serif); font-size: 1.2rem; }
.nav__links { display: flex; align-items: center; gap: var(--s4); }
.nav__links a { font-family: var(--ui); font-size: .9375rem; text-decoration: none; color: var(--ink-soft); }
.nav__links a:hover { color: var(--ink); }
.nav__links .btn--accent { color: #f4f1ea; padding: .55rem 1rem; }
.nav__toggle { display: none; font-family: var(--ui); font-size: .9375rem; background: none; border: 1px solid var(--rule); border-radius: 4px; padding: .5rem .85rem; cursor: pointer; }
.nav__sheet { display: none; flex-direction: column; padding: var(--s2) var(--gutter) var(--s4); border-top: 1px solid var(--rule); }
.nav__sheet a { font-family: var(--serif); font-size: 1.25rem; padding: .7rem 0; text-decoration: none; border-bottom: 1px solid var(--rule); }

.section { max-width: var(--max-wide); margin: 0 auto; padding: var(--s7) var(--gutter); }
.band { max-width: var(--max-content); }
.rule { border: 0; border-top: 1px solid var(--rule); max-width: var(--max-content); margin: 0 auto; }
.h2 { font-size: clamp(1.8rem,3.2vw,2.5rem); line-height: 1.16; max-width: 20ch; }
.h2.center { margin-inline: auto; }
.lead { font-size: clamp(1.05rem,1.5vw,1.3rem); color: var(--ink-soft); line-height: 1.6; }
.lead + .lead { margin-top: var(--s4); }

.hero { max-width: var(--max-content); margin: 0 auto; padding: var(--s7) var(--gutter) var(--s6); text-align: center; }
.hero__h { font-size: clamp(2.4rem,5.5vw,4rem); font-weight: 300; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: var(--s4); }
.hero__sub { font-size: clamp(1.1rem,1.6vw,1.35rem); font-weight: 300; color: var(--ink-soft); max-width: 56ch; margin: 0 auto; }
.hero__quote { font-family: var(--serif); font-style: italic; color: var(--accent-ink); margin: var(--s5) auto 0; max-width: 48ch; }
.hero__cta { display: flex; align-items: center; justify-content: center; gap: var(--s4); margin-top: var(--s5); flex-wrap: wrap; }

.steps { list-style: none; margin: var(--s6) auto 0; padding: 0; max-width: var(--max-content); display: grid; gap: var(--s4); }
.step { display: grid; grid-template-columns: auto 1fr; gap: var(--s3) var(--s4); align-items: start; padding-bottom: var(--s4); border-bottom: 1px solid var(--rule); }
.step:last-child { border-bottom: 0; }
.step__n { font-family: var(--mono); font-weight: 500; color: var(--accent); font-size: 1.05rem; grid-row: span 2; }
.step h3 { font-size: 1.2rem; font-weight: 600; }
.step p { color: var(--ink-soft); }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s6); margin-top: var(--s6); max-width: var(--max-wide); }
.col__h { font-family: var(--ui); font-weight: 500; font-size: .72rem; text-transform: uppercase; letter-spacing: .15em; color: var(--ink-faint); margin-bottom: var(--s3); }
.ticks { list-style: none; margin: 0; padding: 0; }
.ticks li { position: relative; padding-left: 1.5rem; margin-bottom: var(--s3); color: var(--ink-soft); }
.ticks li strong { color: var(--ink); }
.ticks li::before { content: "›"; position: absolute; left: 0; color: var(--accent); font-family: var(--mono); }
.ticks--no li::before { content: "×"; color: var(--ink-faint); }

.lead.center { max-width: 62ch; margin-inline: auto; }
.uses { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s4); margin-top: var(--s6); }
.use { border: 1px solid var(--rule); border-radius: 6px; padding: var(--s4); background: var(--paper); display: flex; flex-direction: column; }
.use h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: var(--s2); }
.use p { color: var(--ink-soft); font-size: .98rem; }
.use code { align-self: flex-start; margin-top: auto; padding-top: var(--s3); font-size: .78rem; background: none; color: var(--accent); padding-left: 0; }

.road { list-style: none; margin: var(--s6) auto 0; padding: 0; max-width: var(--max-content); display: grid; gap: var(--s4); }
.road li { display: grid; grid-template-columns: 5.5rem 1fr; gap: var(--s4); align-items: baseline; }
.road__tag { font-family: var(--ui); font-weight: 500; font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; color: var(--ink-faint); }
.road__tag--now { color: var(--accent); }
.road li div { color: var(--ink-soft); }
.road li strong { color: var(--ink); }

.links { list-style: none; margin: var(--s5) auto 0; padding: 0; max-width: var(--max-content); }
.links li { border-top: 1px solid var(--rule); }
.links li:last-child { border-bottom: 1px solid var(--rule); }
.links a { display: block; padding: var(--s3) 0; text-decoration: none; }
.links a:hover .links__name { color: var(--accent); }
.links__name { display: block; font-family: var(--ui); font-weight: 500; transition: color .18s ease; }
.links__desc { display: block; color: var(--ink-faint); font-size: .95rem; margin-top: 3px; }
.note { font-family: var(--ui); font-size: .85rem; color: var(--ink-faint); margin-top: var(--s4); }

.footer { background: var(--paper-deep); border-top: 1px solid var(--rule); padding: var(--s6) var(--gutter) var(--s5); }
.footer__inner { max-width: var(--max-wide); margin: 0 auto; display: flex; flex-wrap: wrap; gap: var(--s3) var(--s5); align-items: center; justify-content: space-between; }
.footer__brand { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--serif); font-size: 1.15rem; }
.footer__brand .brand__mark { width: 22px; height: 22px; }
.footer__meta { font-family: var(--ui); font-size: .9rem; color: var(--ink-faint); }
.footer__meta a { color: var(--ink-soft); }
.footer__note { max-width: var(--max-wide); margin: var(--s4) auto 0; font-family: var(--ui); font-size: .8125rem; color: var(--ink-faint); line-height: 1.6; }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1024px) {
  .uses { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .nav__links { display: none; }
  .nav__toggle { display: inline-block; }
  .nav.is-open .nav__sheet { display: flex; }
  .grid2 { grid-template-columns: 1fr; gap: var(--s5); }
  .uses { grid-template-columns: 1fr; }
  .road li { grid-template-columns: 1fr; gap: var(--s1); }
  .section { padding-top: var(--s6); padding-bottom: var(--s6); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}