/* RESET */
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0
}

/* VARIABLES */
:root {
  --cream: #F5EFED;
  --cream2: #FFFFFF;
  --cream3: #F4F4ED;
  --ink: #1a1612;
  --ink2: #3d3830;
  --muted: #8c8070;
  --muted2: #b5a99a;
  --orange: #D96C06;
  --orange-light: #fff0e6;
  --orange-mid: #ffd4b3;
  --teal: #007a6e;
  --border: #d6cfc4;
  --border2: #c5bdb2;
  --red: #c0392b;
  --serif: 'Playfair Display', Georgia, serif;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', 'Helvetica Neue', sans-serif;
}

/* BASE */
html {
  scroll-behavior: smooth
}

body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.65;
  overflow-x: hidden
}

/* NOISE TEXTURE OVERLAY */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: .025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 128px
}

/* NAV */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 20px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between
}

#logo {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -.5px;
  text-decoration: none
}

#logo:hover {
  scale: 1.2;
}

#logo .patch {
  color: var(--orange)
}

nav.nav-solid {
  background: rgba(245, 240, 232, .95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px)
}

.nav-back {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  transition: color .15s
}

.nav-back:hover {
  color: var(--ink)
}

@media(min-width:769px) {
  nav {
    padding: 0 48px;
    height: 60px
  }
}

/* CODE BASE */
code {
  padding: 1px 5px;
  border-radius: 3px;
  font-family: var(--mono)
}

/* SYNTAX HIGHLIGHTING */
.kw {
  color: #e8a87c
}

.str {
  color: #a8d8a8
}

.key {
  color: #87c7e8
}

.cm {
  color: #665e55
}

.num {
  color: #e8d87c
}

/* PAGE LAYOUT (subpages) */
.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 96px 20px 64px
}

@media(min-width:769px) {
  .page {
    padding: 120px 48px 100px
  }
}

.page h1 {
  font-family: var(--serif);
  font-size: clamp(28px, 6vw, 42px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
  margin-bottom: 8px
}

.page .updated {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 48px
}

.page h2 {
  font-family: var(--serif);
  font-size: clamp(20px, 4vw, 26px);
  font-weight: 700;
  line-height: 1.2;
  margin-top: 48px;
  margin-bottom: 16px;
  letter-spacing: -.01em
}

.page p {
  font-size: 15px;
  color: var(--ink2);
  margin-bottom: 16px;
  line-height: 1.7
}

.page ul,
.page ol {
  margin: 0 0 16px 20px;
  color: var(--ink2);
  font-size: 15px;
  line-height: 1.7
}

.page ul li,
.page ol li {
  margin-bottom: 8px
}

.page a {
  color: var(--orange);
  text-decoration: underline;
  text-underline-offset: 2px
}

.page a:hover {
  color: var(--ink)
}

.page code {
  background: var(--cream2);
  font-size: 13px;
  color: var(--ink2)
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px
}

.footer-logo {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--ink)
}

.footer-logo .patch {
  color: var(--orange)
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center
}

.footer-links a {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  text-decoration: none
}

.footer-links a:hover {
  color: var(--ink)
}

.footer-copy {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted2)
}

@media(min-width:769px) {
  footer {
    padding: 28px 48px;
    flex-direction: row;
    justify-content: space-between;
    text-align: left
  }

  .footer-links {
    gap: 24px
  }
}

/* ANIMATIONS */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px)
  }

  to {
    opacity: 1;
    transform: none
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .55s ease, transform .55s ease
}

.reveal.visible {
  opacity: 1;
  transform: none
}

.reveal-delay-1 {
  transition-delay: .1s
}

.reveal-delay-2 {
  transition-delay: .2s
}