/* ============================================================
   Daniel Oluremi — portfolio
   Hand-built. Paper & moss editorial system.
   ============================================================ */

/* ---------- Fonts ---------- */
@font-face {
  font-family: 'Fraunces';
  src: url('assets/fonts/fraunces-var.woff2') format('woff2');
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Fraunces';
  src: url('assets/fonts/fraunces-italic-var.woff2') format('woff2');
  font-weight: 300 700;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('assets/fonts/inter-var.woff2') format('woff2');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('assets/fonts/jbmono-var.woff2') format('woff2');
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --bg: #F6F2EA;
  --bg-elev: #FDFBF6;
  --ink: #1D1A14;
  --ink-2: #57513F;
  --ink-3: #6E6754;
  --accent: #41582F;
  --accent-strong: #33471F;
  --bronze: #82612A;
  --line: #E2DACA;
  --wash-balancc: #ECE7F0;
  --shadow: 0 24px 60px -30px rgba(29, 26, 20, .35);
  --serif: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --sans: 'Inter', -apple-system, 'Helvetica Neue', sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
  --ease: cubic-bezier(.22, .8, .3, 1);
  color-scheme: light;
}
:root[data-theme='dark'] {
  --bg: #171410;
  --bg-elev: #1F1B15;
  --ink: #ECE5D4;
  --ink-2: #B0A78F;
  --ink-3: #918A76;
  --accent: #9DB283;
  --accent-strong: #B5C89E;
  --bronze: #C7A15C;
  --line: #2C271E;
  --wash-balancc: #221E28;
  --shadow: 0 24px 60px -28px rgba(0, 0, 0, .7);
  color-scheme: dark;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  /* paper grain rides the body background — no fixed overlay layer */
  background-color: var(--bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .022 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  -webkit-font-smoothing: antialiased;
  transition: background-color .35s var(--ease), color .35s var(--ease);
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }

::selection { background: var(--accent); color: var(--bg); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 100;
  padding: .6rem 1rem;
  background: var(--ink);
  color: var(--bg);
  border-radius: 0 0 8px 8px;
  text-decoration: none;
  font-size: .875rem;
}
.skip-link:focus { top: 0; }

/* ---------- Typography helpers ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.eyebrow .accent { color: var(--accent); }

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 480;
  line-height: 1.08;
  letter-spacing: -.015em;
  text-wrap: balance;
}
/* pin the display optical size only on large setpieces; cards stay auto */
.hero-name, h2 { font-variation-settings: 'opsz' 100; }
h2 { font-size: clamp(1.9rem, 4.2vw, 3rem); }

/* ---------- Layout shell ---------- */
main { position: relative; z-index: 2; }
section {
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}
.section-head { margin-bottom: clamp(2.5rem, 6vw, 4.5rem); }
.section-head .eyebrow { margin-bottom: .9rem; }
.section-sub {
  margin-top: 1rem;
  max-width: 46ch;
  color: var(--ink-2);
}

/* ---------- Header ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: .8rem clamp(1.25rem, 5vw, 3rem);
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.wordmark {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 560;
  text-decoration: none;
  letter-spacing: -.02em;
}
.wordmark-i { font-style: italic; color: var(--accent); }
.site-nav {
  display: flex;
  gap: 1.4rem;
  margin-inline: auto;
}
.site-nav a {
  font-size: .9rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink-2);
  transition: color .2s var(--ease);
}
.site-nav a:hover { color: var(--accent); }
.head-actions { display: flex; align-items: center; gap: .6rem; }

.theme-toggle {
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: none;
  color: var(--ink-2);
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), transform .3s var(--ease);
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); transform: rotate(40deg); }
:root:not([data-theme='dark']) .tt-moon { display: none; }
:root[data-theme='dark'] .tt-sun { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .62rem 1.25rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: .92rem;
  font-weight: 500;
  text-decoration: none;
  line-height: 1.2;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn-solid { background: var(--ink); color: var(--bg); }
.btn-solid:hover { background: var(--accent-strong); border-color: var(--accent-strong); }
:root[data-theme='dark'] .btn-solid:hover { color: #171410; }
.btn-ghost { border-color: var(--line); color: var(--ink-2); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: .85rem 1.7rem; font-size: 1rem; }
.btn-cv { padding: .45rem .95rem; font-size: .85rem; }
.cv-arrow { transition: transform .25s var(--ease); }
.btn-cv:hover .cv-arrow { transform: translateY(2px); }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(4rem, 12vh, 8.5rem) clamp(4rem, 10vh, 7rem); }
.hero .eyebrow { margin-bottom: 1.4rem; }
.hero-name {
  font-size: clamp(3.4rem, 11vw, 8.2rem);
  font-weight: 460;
  line-height: .98;
  margin-bottom: clamp(2rem, 5vw, 3.4rem);
}
.hero-name-i {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}
.hero-cols {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  margin-bottom: 2.6rem;
}
.hero-lede {
  font-size: clamp(1.12rem, 1.8vw, 1.3rem);
  line-height: 1.65;
  color: var(--ink-2);
  max-width: 33em;
}
.hero-facts {
  display: grid;
  gap: .85rem;
  border-left: 1px solid var(--line);
  padding-left: clamp(1.25rem, 3vw, 2rem);
}
.hero-facts dt {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.hero-facts dd {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 500;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: .8rem; }

/* ---------- Case studies ---------- */
.work { padding-block: clamp(3rem, 8vh, 6rem); }
.case {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding-block: clamp(2.75rem, 7vh, 5.5rem);
  border-top: 1px solid var(--line);
}
.case:nth-of-type(odd) .case-media { order: 2; }

.case-no {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--bronze);
  margin-bottom: .4rem;
}
.case h3 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin-bottom: .35rem; }
.case-role {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 1.2rem;
}
.case-desc { color: var(--ink-2); margin-bottom: 1.2rem; max-width: 52ch; }
.case-points {
  list-style: none;
  display: grid;
  gap: .55rem;
  margin-bottom: 1.3rem;
  font-size: .95rem;
  color: var(--ink-2);
}
.case-points li {
  padding-left: 1.15rem;
  position: relative;
}
.case-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: .58em;
  width: .45rem;
  height: .45rem;
  border-radius: 50%;
  background: var(--accent);
  opacity: .55;
}
.case-stats {
  font-size: .98rem;
  margin-bottom: 1.1rem;
  color: var(--ink-2);
}
.case-stats strong { color: var(--bronze); font-weight: 600; }
.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-bottom: 1.35rem;
}
.case-tags span {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .05em;
  padding: .28rem .65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-3);
}
.case-links { display: flex; flex-wrap: wrap; gap: 1.4rem; }
.case-links a {
  font-size: .92rem;
  font-weight: 550;
  color: var(--accent);
  text-decoration: none;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 0% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size .3s var(--ease);
  padding-bottom: 2px;
}
.case-links a:hover { background-size: 100% 1px; }

/* case media */
.case-media { min-width: 0; }
.case-media-photo {
  border-radius: 22px;
  background:
    radial-gradient(120% 120% at 20% 10%, var(--wash-balancc) 0%, transparent 70%),
    var(--bg-elev);
  border: 1px solid var(--line);
  padding: clamp(1.25rem, 3vw, 2.5rem);
}
.case-media-photo img { filter: drop-shadow(0 12px 18px rgba(29, 26, 20, .3)); }

.rail {
  display: flex;
  gap: .9rem;
  overflow-x: auto;
  padding: .25rem .25rem 1rem;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
  -webkit-overflow-scrolling: touch;
  -webkit-mask-image: linear-gradient(to right, #000 92%, transparent);
  mask-image: linear-gradient(to right, #000 92%, transparent);
}
/* spacer so the last screenshot can scroll clear of the edge fade */
.rail::after { content: ''; flex: 0 0 2.5rem; }
.rail::-webkit-scrollbar { height: 6px; }
.rail::-webkit-scrollbar-thumb { background: var(--line); border-radius: 3px; }
.rail::-webkit-scrollbar-track { background: transparent; }
.rail img {
  height: clamp(280px, 32vw, 360px);
  width: auto;
  flex: none;
  border-radius: 14px;
  border: 1px solid var(--line);
  scroll-snap-align: start;
  box-shadow: 0 10px 24px -12px rgba(29, 26, 20, .35);
}

/* ---------- In-the-works block ---------- */
.building { padding-top: clamp(2.5rem, 6vh, 4.5rem); border-top: 1px solid var(--line); }
.building > .eyebrow { margin-bottom: 1.6rem; }
.building > .eyebrow a { color: var(--accent); text-decoration: none; }
.building > .eyebrow a:hover { text-decoration: underline; }
.building .ai-card { background: var(--bg-elev); }

/* ---------- AI section ---------- */
.ai {
  max-width: none;
  background: var(--bg-elev);
  border-block: 1px solid var(--line);
  padding-block: clamp(4rem, 10vh, 7rem);
}
.ai > * { max-width: 66rem; margin-inline: auto; }
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(19rem, 100%), 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
}
.ai-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: clamp(1.4rem, 3vw, 2rem);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}
.ai-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.ai-card h3 { font-size: 1.35rem; line-height: 1.25; }
.ai-card p { font-size: .95rem; color: var(--ink-2); }
.ai-card .case-tags { margin-bottom: 0; margin-top: auto; }
.ai-card .case-links { margin-top: .25rem; }

/* ---------- Article card ---------- */
.ai-card-wide { margin-top: clamp(1.25rem, 3vw, 2rem); }
.ai-card-wide h3 a {
  color: inherit;
  text-decoration: none;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 0% 2px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size .35s var(--ease);
}
.ai-card-wide h3 a:hover { background-size: 100% 2px; }
.art-meta {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--ink-3);
}

/* ---------- Open source ---------- */
.oss { padding-block: clamp(4rem, 10vh, 6.5rem) 0; }
.pkg-name { font-family: var(--mono); font-size: .95rem; font-weight: 550; letter-spacing: -.01em; }
.arch-tech a { color: var(--accent); text-decoration: none; }
.arch-tech a:hover { text-decoration: underline; }

/* ---------- Archive ---------- */
.archive { padding-block: clamp(4rem, 10vh, 6.5rem); }
.archive-list { list-style: none; }
.archive-list li {
  display: grid;
  grid-template-columns: 5rem minmax(0, .8fr) minmax(0, 1.8fr) minmax(0, .9fr);
  gap: 1.25rem;
  align-items: baseline;
  padding-block: 1.2rem;
  border-top: 1px solid var(--line);
}
.archive-list li:last-child { border-bottom: 1px solid var(--line); }
.arch-year {
  font-family: var(--mono);
  font-size: .75rem;
  color: var(--ink-3);
}
.arch-name {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 520;
}
.arch-desc { font-size: .92rem; color: var(--ink-2); }
.arch-tech {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .04em;
  color: var(--ink-3);
  text-align: right;
}

/* ---------- Experience ---------- */
.xp { padding-block: clamp(1rem, 4vh, 3rem) clamp(4rem, 10vh, 6.5rem); }
.xp-list { list-style: none; display: grid; gap: 2rem; }
.xp-list li {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  gap: 1.5rem;
  align-items: baseline;
}
.xp-when {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .07em;
  color: var(--ink-3);
}
.xp-list h3 { font-size: 1.3rem; margin-bottom: .2rem; }
.xp-list h3 a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
.xp-list h3 a:hover { color: var(--accent); }
.xp-co { color: var(--ink-3); font-weight: 400; }
.xp-list p { font-size: .95rem; color: var(--ink-2); max-width: 56ch; }

/* ---------- About ---------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  padding-block: clamp(3rem, 9vh, 6rem);
}
.about-media img {
  border-radius: 20px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  filter: saturate(.92);
}
.about-body h2 { margin-block: .9rem 1.4rem; }
.about-body p + p { margin-top: 1rem; }
.about-body p { color: var(--ink-2); max-width: 58ch; }

/* ---------- Contact ---------- */
.contact {
  text-align: center;
  padding-block: clamp(4.5rem, 13vh, 9rem);
}
.contact-line {
  font-size: clamp(2.6rem, 7.5vw, 5.4rem);
  line-height: 1.04;
  margin-block: 1.1rem .9rem;
}
.contact-line-i { font-style: italic; font-weight: 400; color: var(--accent); }
.contact-sub { color: var(--ink-2); margin-bottom: 2.2rem; }
.contact-ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .9rem;
}

/* ---------- Footer ---------- */
.site-foot {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2rem;
  max-width: 72rem;
  margin-inline: auto;
  padding: 2rem clamp(1.25rem, 5vw, 3rem) 2.6rem;
  border-top: 1px solid var(--line);
  font-size: .85rem;
  color: var(--ink-3);
}
.site-foot nav { display: flex; gap: 1.3rem; margin-inline: auto; }
.site-foot a {
  color: var(--ink-2);
  text-decoration: none;
  transition: color .2s var(--ease);
}
.site-foot a:hover { color: var(--accent); }
.foot-meta { font-family: var(--mono); font-size: .72rem; }

/* ---------- Reveal on scroll ----------
   Hidden state is gated on html.js (set before first paint; removed if main.js
   fails to load) and scoped to screen so print always shows full content. */
@media screen and (prefers-reduced-motion: no-preference) {
  html.js .reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity .55s var(--ease), transform .55s var(--ease);
  }
  html.js .reveal.is-in { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .site-nav { display: none; }
  .head-actions { margin-left: auto; }

  .hero-cols { grid-template-columns: 1fr; }
  .hero-facts {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 1.5rem;
    grid-template-columns: 1fr 1fr;
  }

  .case,
  .about { grid-template-columns: 1fr; }
  .case:nth-of-type(odd) .case-media { order: 0; }
  .case-media { order: 0; }
  .case-body { order: 1; }
  .about-media { max-width: 420px; }

  .archive-list li {
    grid-template-columns: 4rem minmax(0, 1fr);
    grid-template-areas:
      'year name'
      'year desc'
      'year tech';
    row-gap: .3rem;
  }
  .arch-year { grid-area: year; }
  .arch-name { grid-area: name; }
  .arch-desc { grid-area: desc; }
  .arch-tech { grid-area: tech; text-align: left; }

  .xp-list li { grid-template-columns: 1fr; gap: .3rem; }
}

@media (max-width: 480px) {
  .btn-cv { display: none; }
  .rail img { height: 250px; }
}

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  .btn:hover,
  .theme-toggle:hover,
  .ai-card:hover,
  .btn-cv:hover .cv-arrow { transform: none; }
}

/* ---------- Print ---------- */
@media print {
  /* force the light token set regardless of chosen theme */
  :root, :root[data-theme='dark'] {
    --bg: #fff;
    --bg-elev: #fff;
    --ink: #000;
    --ink-2: #333;
    --ink-3: #555;
    --accent: #33471F;
    --accent-strong: #33471F;
    --bronze: #6B4F1D;
    --line: #ddd;
  }
  .site-head, .theme-toggle { display: none; }
  body { background: #fff; color: #000; }
}