/* ==========================================================================
   Barry Khan — "Blueprint" theme
   One stylesheet for every page that uses layouts/base.njk.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Tokens
   -------------------------------------------------------------------------- */
:root {
  --font-heading: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --paper: #F7F7F4;
  --ink: #111111;
  --muted: #54565B;
  --line: #DADAD3;
  --card: #FFFFFF;
  --accent: #FFE14D;
  --on-accent: #111111;
  --focus: #2F6BFF;
  --ok: #1F9D55;
  --grid-line: rgba(128, 128, 128, 0.13);

  --wrap: 1200px;
  --gutter: 24px;
  --prose: 72ch;

  color-scheme: light;
}

/* Dark: explicit choice, or system preference when no choice is stored */
:root[data-theme="dark"] {
  --paper: #111214;
  --ink: #F2F2EE;
  --muted: #A9ABB1;
  --line: #2B2D31;
  --card: #18191C;
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #111214;
    --ink: #F2F2EE;
    --muted: #A9ABB1;
    --line: #2B2D31;
    --card: #18191C;
    color-scheme: dark;
  }
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

main { flex: 1 0 auto; }

img, video { max-width: 100%; height: auto; }

a { color: inherit; text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(40px, 5.5vw, 72px); letter-spacing: -0.035em; line-height: 1.02; }
h2 { font-size: clamp(30px, 3.4vw, 44px); }
h3 { font-size: 24px; letter-spacing: -0.015em; }
h4 { font-size: 19px; letter-spacing: -0.01em; }

p { margin: 0 0 1.1em; }

mark, .hl {
  background: var(--accent);
  color: var(--on-accent);
  padding: 0 0.12em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

hr { border: 0; border-top: 1px solid var(--line); margin: 3rem 0; }

/* --------------------------------------------------------------------------
   Utilities
   -------------------------------------------------------------------------- */
.wrap { max-width: var(--wrap); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

.eyebrow {
  margin: 0 0 1.5rem;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.bp {
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
}

.sr-only, .visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.hidden { display: none; }

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 100;
  padding: 12px 18px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
}
.skip-link:focus { top: 12px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 26px;
  border: 2px solid var(--ink);
  font: 600 16px/1 var(--font-body);
  text-decoration: none;
  cursor: pointer;
}
.btn--solid { background: var(--ink); color: var(--paper); }
.btn--solid:hover { background: transparent; color: var(--ink); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); }
.btn svg { flex: none; }

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header { border-bottom: 1px solid var(--line); }
.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 18px;
  padding-bottom: 18px;
}
.site-header__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.site-header__name span { background: var(--accent); color: var(--on-accent); padding: 2px 8px; }
.site-header__name:hover span { background: var(--ink); color: var(--accent); }

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 28px;
  font-size: 15px;
  font-weight: 500;
}
.site-nav a { display: inline-block; padding: 10px 0; text-decoration: none; }
.site-nav a:hover,
.site-nav a[aria-current="page"] { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 6px; }
.site-nav a[aria-current="page"] { text-decoration-color: var(--accent); text-decoration-thickness: 4px; }
.site-nav .site-nav__cta {
  padding: 9px 16px;
  border: 2px solid var(--ink);
  font-weight: 600;
}
.site-nav .site-nav__cta:hover { background: var(--ink); color: var(--paper); text-decoration: none; }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
  padding-top: 28px;
  padding-bottom: 28px;
}
.site-footer p { margin: 0; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; }
.site-footer a:hover { color: var(--ink); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font: 500 14px/1 var(--font-body);
  cursor: pointer;
}
.theme-toggle:hover { border-color: var(--ink); }
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: inline; }

/* --------------------------------------------------------------------------
   Interior pages (posts, work, about, archive …)
   -------------------------------------------------------------------------- */
.page { padding-top: clamp(56px, 8vw, 96px); padding-bottom: clamp(64px, 9vw, 112px); }
.page__body { max-width: var(--prose); }
.page__body--wide { max-width: none; }
.page__body > h1:first-child { margin-bottom: 0.6em; }

.page__body h2 { margin-top: 2.2em; }
.page__body h3 { margin-top: 1.8em; }
.page__body h4 { margin-top: 1.6em; }
.page__body ul, .page__body ol { padding-left: 1.3em; margin: 0 0 1.2em; }
.page__body li { margin-bottom: 0.4em; }
.page__body img { display: block; margin: 2rem 0; border: 1px solid var(--line); }

.intro > p:first-of-type,
.lead { font-size: 21px; line-height: 1.55; color: var(--muted); }

/* Heading anchors from markdown-it-anchor */
.direct-link { margin-left: 0.3em; color: var(--muted); text-decoration: none; font-weight: 400; opacity: 0; }
:hover > .direct-link, .direct-link:focus { opacity: 1; }

/* Post meta (date / category) */
.post-meta { margin: 0 0 2.5rem; font-size: 14px; color: var(--muted); }
.post-meta p { margin: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; }
.post-meta strong { font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; font-size: 12px; }
.post-meta a {
  padding: 3px 10px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
}

/* Post / work lists */
.postlist { list-style: none; margin: 2rem 0 0; padding: 0; border-top: 1px solid var(--line); }
.postlist-item { padding: 28px 0; border-bottom: 1px solid var(--line); }
.postlist-item h2 { margin: 0 0 8px; font-size: clamp(22px, 2.4vw, 28px); letter-spacing: -0.015em; }
.postlist-item h2 a { text-decoration: none; }
.postlist-item h2 a:hover { text-decoration: underline; text-decoration-thickness: 2px; }
.postlist-item .post-meta { margin: 0 0 8px; }
.postlist-item > p { margin: 0; color: var(--muted); font-size: 16px; }
.postlist-link { font-family: var(--font-heading); font-size: 24px; font-weight: 600; text-decoration: none; display: block; }
.postlist-date { display: inline-block; margin-right: 12px; font-size: 14px; color: var(--muted); }
.post-tag {
  display: inline-block;
  margin-right: 6px;
  padding: 2px 8px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
}

/* Blockquote, code, tables */
blockquote {
  margin: 2rem 0;
  padding: 20px 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 6px solid var(--accent);
}
blockquote p:last-child { margin-bottom: 0; }

code { font-size: 0.88em; }
:not(pre) > code { padding: 0.1em 0.35em; background: var(--card); border: 1px solid var(--line); }
pre { overflow-x: auto; padding: 20px; font-size: 15px; line-height: 1.5; }

table { width: 100%; border-collapse: collapse; margin: 2rem 0; font-size: 16px; display: block; overflow-x: auto; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-weight: 600; }

.infobox { padding: 20px 24px; background: var(--card); border: 1px solid var(--line); }

/* About: skills grid */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin: 2rem 0; }
.skills-category { padding: 24px; background: var(--card); border: 1px solid var(--line); }
.skills-category h3 { margin: 0 0 12px; font-size: 20px; }
.skills-category .skills-list { list-style: none; padding: 0; margin: 0; }
.skills-category .skills-list li { position: relative; padding-left: 1.4em; margin: 0.4em 0; font-size: 16px; }
.skills-category .skills-list li::before { content: "→"; position: absolute; left: 0; color: var(--muted); }

img.avatar, img.profile { border-radius: 50%; }

/* --------------------------------------------------------------------------
   Call to action band (shared)
   -------------------------------------------------------------------------- */
.cta-band { background: var(--accent); color: var(--on-accent); }
.cta-band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  padding-top: clamp(64px, 8vw, 96px);
  padding-bottom: clamp(64px, 8vw, 96px);
}
.cta-band__text { flex: 999 1 520px; min-width: 0; }
.cta-band h2 { margin: 0 0 16px; font-size: clamp(40px, 5vw, 72px); line-height: 1; letter-spacing: -0.035em; }
.cta-band p { margin: 0; max-width: 520px; font-size: 19px; color: #2B2B2B; }
.cta-band__actions { flex: 1 1 280px; max-width: 360px; display: flex; flex-direction: column; gap: 12px; }
.cta-band__actions a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 56px;
  padding: 0 22px;
  border: 2px solid #111111;
  color: #111111;
  font-weight: 600;
  text-decoration: none;
}
.cta-band__actions a:first-child { background: #111111; color: #FFFFFF; }
.cta-band__actions a:hover { background: #FFFFFF; color: #111111; }
.cta-band :focus-visible { outline-color: #111111; }

/* --------------------------------------------------------------------------
   Homepage
   -------------------------------------------------------------------------- */
.hero { border-bottom: 1px solid var(--line); }
.hero__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 56px;
  padding-top: clamp(64px, 9vw, 104px);
  padding-bottom: clamp(72px, 9vw, 112px);
}
.hero__text { flex: 999 1 560px; min-width: 0; }
.hero h1 { margin: 0 0 32px; font-size: clamp(44px, 6.4vw, 92px); line-height: 1; letter-spacing: -0.035em; }
.hero__lead { margin: 0 0 40px; max-width: 600px; font-size: 20px; line-height: 1.55; color: var(--muted); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero__figure { flex: 1 1 300px; max-width: 420px; margin: 0; position: relative; }
.hero__figure::before {
  content: "";
  position: absolute;
  inset: 20px -20px 40px 20px;
  background: var(--accent);
}
.hero__figure img {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 7 / 8;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.05);
}
.hero__status {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 36px;
  font-size: 14px;
  font-weight: 500;
}
.hero__status::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--ok); }

.clients { border-bottom: 1px solid var(--line); }
.clients__inner { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 48px; padding-top: 32px; padding-bottom: 32px; }
.clients h2 { margin: 0; font-family: var(--font-body); font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.clients ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 40px; font-family: var(--font-heading); font-size: 20px; font-weight: 600; letter-spacing: -0.01em; }

.section { padding-top: clamp(72px, 9vw, 112px); padding-bottom: clamp(72px, 9vw, 112px); }
.section__head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 48px; }
.section__head h2 { margin: 0; font-size: clamp(36px, 4vw, 56px); line-height: 1.05; letter-spacing: -0.03em; }
.section__head a { font-weight: 600; }
.section__intro { margin: -32px 0 56px; max-width: 620px; font-size: 19px; color: var(--muted); }

.work-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.work-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100%;
  min-height: 300px;
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.work-card:hover { transform: translateY(-3px); border-color: var(--ink); }
.work-card__top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.work-card__num { font-family: var(--font-heading); font-size: 15px; font-weight: 600; color: var(--muted); }
.work-card__org { padding: 4px 10px; background: var(--accent); color: var(--on-accent); font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }
.work-card h3 { margin: 12px 0 0; font-size: 25px; line-height: 1.15; }
.work-card p { margin: 0; flex-grow: 1; font-size: 15px; line-height: 1.55; color: var(--muted); }
.work-card__more { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 600; }

.process { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.process ol { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 40px 24px; }
.process li { position: relative; padding-top: 24px; border-top: 3px solid var(--ink); }
.process li::before {
  content: "";
  position: absolute;
  top: -9px;
  left: 0;
  width: 15px;
  height: 15px;
  background: var(--accent);
  border: 3px solid var(--ink);
}
.process .eyebrow { margin-bottom: 8px; }
.process h3 { margin: 0 0 10px; font-size: 26px; }
.process li p:last-child { margin: 0; font-size: 16px; line-height: 1.55; color: var(--muted); }

.writing-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.writing-list li { border-bottom: 1px solid var(--line); }
.writing-list a { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 32px; padding: 28px 0; text-decoration: none; }
.writing-list time { flex: 0 0 140px; font-size: 14px; font-weight: 500; color: var(--muted); }
.writing-list__title { flex: 1 1 360px; font-family: var(--font-heading); font-size: clamp(22px, 2.4vw, 30px); font-weight: 600; line-height: 1.2; letter-spacing: -0.015em; }
.writing-list a:hover .writing-list__title { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 0.15em; }
.writing-list__tag { font-size: 13px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }

/* --------------------------------------------------------------------------
   Contact page
   -------------------------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 48px; margin-top: 2rem; }
.contact-channels h2, .contact-form h2 { font-size: 28px; }
.social-links { list-style: none; margin: 0; padding: 0; }
.social-links li { margin-bottom: 12px; }
.social-link { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; min-height: 52px; padding: 0 18px; border: 1px solid var(--line); background: var(--card); text-decoration: none; font-weight: 500; }
.social-link:hover { border-color: var(--ink); }
.social-icon { width: 22px; height: 22px; flex: none; }
.social-detail { color: var(--muted); font-size: 15px; }

.contact-form { padding: 32px; background: var(--card); border: 1px solid var(--line); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 16px; }
.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 2px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.5 var(--font-body);
}
.form-group textarea { resize: vertical; }
.checkbox-label { display: flex; align-items: flex-start; gap: 12px; font-weight: 400 !important; font-size: 15px !important; }
.checkbox-label input { width: 22px; height: 22px; margin: 2px 0 0; flex: none; accent-color: var(--ink); }
.required { color: #B42318; }
:root[data-theme="dark"] .required { color: #FF8A80; }
.error-message { margin-top: 6px; color: #B42318; font-size: 14px; }
.form-success { padding: 20px; border-left: 6px solid var(--ok); background: var(--paper); }
.contact-form .submit-button {
  display: inline-flex;
  align-items: center;
  min-height: 52px;
  padding: 0 26px;
  border: 2px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font: 600 16px/1 var(--font-body);
  cursor: pointer;
}
.contact-form .submit-button:hover { background: transparent; color: var(--ink); }

/* --------------------------------------------------------------------------
   Motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

.margin-bottom-80 { margin-bottom: 80px; }