@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,500;0,9..144,600;1,9..144,400;1,9..144,500&family=Inter:wght@400;500;600&display=swap");

/* ==========================================================================
   ArticleHub — premium editorial design system (plain CSS build)
   Warm ivory paper, espresso ink, terracotta accent, antique brass detail.
   Display: Fraunces (serif). Body: Inter.
   ========================================================================== */


:root {
  --radius: 0.25rem;
  --radius-sm: calc(var(--radius) - 4px);

  --font-display: "Fraunces", Georgia, serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;

  --background: oklch(0.965 0.012 85);
  --foreground: oklch(0.235 0.017 60);

  --paper-raise: oklch(0.985 0.008 90);
  --paper-dim: oklch(0.936 0.016 84);

  --muted: oklch(0.936 0.016 84);
  --muted-foreground: oklch(0.505 0.022 63);

  --accent: oklch(0.545 0.114 41);
  --accent-foreground: oklch(0.985 0.008 90);
  --brass: oklch(0.68 0.078 78);

  --border: oklch(0.879 0.019 82);
  --hairline: oklch(0.845 0.022 80);
  --ring: oklch(0.545 0.114 41);

  --shadow-plate: 0 1px 2px oklch(0.24 0.03 60 / 0.05), 0 18px 40px -24px oklch(0.24 0.03 60 / 0.28);
}

/* ---- reset ---- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; border-color: var(--border); }
html { scroll-behavior: smooth; }
body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "kern", "liga", "calt";
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
ul, ol { list-style: none; padding: 0; }
::selection { background: var(--accent); color: var(--accent-foreground); }

/* ---- layout utilities ---- */
.wrap {
  width: 100%;
  max-width: 76rem;
  margin-inline: auto;
  padding-inline: 1.75rem;
}
.wrap-narrow {
  width: 100%;
  max-width: 44rem;
  margin-inline: auto;
  padding-inline: 1.75rem;
}

.display {
  font-family: var(--font-display);
  font-weight: 500;
  font-variation-settings: "SOFT" 0, "WONK" 1;
  letter-spacing: -0.018em;
  line-height: 1.08;
}

.eyebrow {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted-foreground);
  display: inline-block;
}

.rule-top { border-top: 1px solid var(--hairline); }

.text-accent { color: var(--accent); }
.text-brass { color: var(--brass); }
.text-muted { color: var(--muted-foreground); }

.paper-grain { position: relative; }
.paper-grain::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image: radial-gradient(oklch(0.24 0.03 60 / 0.06) 0.5px, transparent 0.5px);
  background-size: 3px 3px;
}

.link-underline {
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.link-underline:hover { background-size: 100% 1px; }

.dropcap::first-letter {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 3.4em;
  float: left;
  line-height: 0.78;
  padding: 0.08em 0.12em 0 0;
  color: var(--accent);
}

.border-b-hairline { border-bottom: 1px solid var(--hairline); }
.border-t-hairline { border-top: 1px solid var(--hairline); }
.bg-paper-dim { background-color: var(--paper-dim); }
.bg-paper-raise { background-color: var(--paper-raise); }
.bg-foreground { background-color: var(--foreground); color: var(--background); }

/* ---- buttons ---- */
.btn {
  display: inline-block;
  border-radius: var(--radius-sm);
  border: 1px solid var(--foreground);
  background: var(--foreground);
  color: var(--background);
  padding: 0.75rem 1.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: background-color 0.2s, border-color 0.2s;
  cursor: pointer;
}
.btn:hover { border-color: var(--accent); background: var(--accent); }

.btn-outline {
  display: inline-block;
  border-radius: var(--radius-sm);
  border: 1px solid var(--hairline);
  background: transparent;
  color: var(--foreground);
  padding: 0.75rem 1.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: border-color 0.2s;
  cursor: pointer;
}
.btn-outline:hover { border-color: var(--foreground); }

.btn-accent-outline {
  display: inline-block;
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-foreground);
  padding: 1rem 2rem;
  font-size: 0.86rem;
  font-weight: 500;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
  cursor: pointer;
}
.btn-accent-outline:hover { border-color: var(--background); background: var(--background); color: var(--foreground); }

.pill {
  border-radius: 999px;
  border: 1px solid var(--hairline);
  padding: 0.62rem 1.25rem;
  font-size: 0.85rem;
  background: transparent;
  color: var(--foreground);
  cursor: pointer;
  transition: border-color 0.2s, background-color 0.2s, color 0.2s;
}
.pill:hover { border-color: var(--foreground); }
.pill.active { border-color: var(--foreground); background: var(--foreground); color: var(--background); }

.tag {
  border-radius: 999px;
  border: 1px solid var(--hairline);
  padding: 0.5rem 1rem;
  font-size: 0.78rem;
  color: var(--muted-foreground);
  display: inline-block;
  transition: border-color 0.2s, color 0.2s;
}
.tag:hover { border-color: var(--foreground); color: var(--foreground); }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--hairline);
  background-color: color-mix(in oklab, var(--background) 85%, transparent);
  backdrop-filter: blur(8px);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1.25rem;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}
.brand .display { font-size: 1.45rem; letter-spacing: -0.018em; }
.brand .accent-italic { font-style: italic; color: var(--accent); }

.main-nav { display: none; align-items: center; gap: 2.25rem; }
.main-nav a {
  font-size: 0.9rem;
  color: var(--muted-foreground);
  transition: color 0.2s;
}
.main-nav a:hover, .main-nav a.active { color: var(--foreground); }

.header-actions { display: flex; align-items: center; gap: 0.75rem; }
.header-cta { display: none; }
.nav-toggle {
  display: flex;
  height: 2.25rem;
  width: 2.25rem;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--hairline);
  background: transparent;
  font-size: 0.95rem;
}

.mobile-nav {
  border-top: 1px solid var(--hairline);
  display: none;
}
.mobile-nav.open { display: block; }
.mobile-nav .wrap { display: flex; flex-direction: column; padding-block: 0.75rem; }
.mobile-nav a {
  border-bottom: 1px solid color-mix(in oklab, var(--hairline) 60%, transparent);
  padding-block: 0.75rem;
  font-size: 0.95rem;
  color: var(--muted-foreground);
}
.mobile-nav a:last-child { border-bottom: 0; }
.mobile-nav a.active { color: var(--foreground); }

@media (min-width: 768px) {
  .main-nav { display: flex; }
  .nav-toggle { display: none; }
  .header-cta { display: inline-block; }
  .mobile-nav { display: none !important; }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { border-top: 1px solid var(--hairline); background-color: var(--paper-raise); }
.footer-grid {
  display: grid;
  gap: 3rem;
  padding-block: 4rem;
  grid-template-columns: 1fr;
}
.footer-about { max-width: 24rem; }
.footer-about p { margin-top: 1rem; font-size: 0.9rem; line-height: 1.7; color: var(--muted-foreground); }
.footer-col h5 { margin-bottom: 1rem; }
.footer-col ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-col a { font-size: 0.9rem; color: color-mix(in oklab, var(--foreground) 80%, transparent); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  border-top: 1px solid var(--hairline);
  padding-block: 1.5rem;
  font-size: 0.75rem;
  color: var(--muted-foreground);
}
.footer-bottom .est { letter-spacing: 0.18em; text-transform: uppercase; }

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}

/* ==========================================================================
   Hero / page hero
   ========================================================================== */
.hero {
  border-bottom: 1px solid var(--hairline);
}
.hero .wrap {
  display: grid;
  align-items: center;
  gap: 3rem;
  padding-block: 3.5rem;
}
.hero h1 {
  margin-top: 1.25rem;
  max-width: 15ch;
  font-size: clamp(2.3rem, 5vw, 3.6rem);
}
.hero p.lede {
  margin-top: 1.5rem;
  max-width: 52ch;
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--muted-foreground);
}
.hero-actions { margin-top: 2rem; display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; }
.hero-image img {
  aspect-ratio: 16 / 9;
  width: 100%;
  max-height: 340px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-plate);
}

@media (min-width: 768px) {
  .hero .wrap { grid-template-columns: 1.05fr 0.95fr; padding-block: 5rem; }
}

.page-hero {
  border-bottom: 1px solid var(--hairline);
  background-color: var(--paper-raise);
}
.page-hero .wrap { padding-block: 4rem; }
.page-hero h1 { margin-top: 1.25rem; max-width: 40rem; font-size: clamp(2.2rem, 5vw, 3.6rem); }
.page-hero p.lede { margin-top: 1.5rem; max-width: 34rem; font-size: 1.05rem; line-height: 1.7; color: var(--muted-foreground); }

@media (min-width: 768px) {
  .page-hero .wrap { padding-block: 6rem; }
}

/* ==========================================================================
   Sections
   ========================================================================== */
section.section { border-bottom: 1px solid var(--hairline); }
section.section .wrap { padding-block: 4rem; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.section-title { font-size: clamp(1.5rem, 2.6vw, 2rem); }

/* why publish grid */
.why-grid {
  margin-top: 2rem;
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
}
.why-grid .item { padding-top: 1rem; }
.why-grid h3 { font-size: 1.05rem; }
.why-grid p { margin-top: 0.5rem; font-size: 0.86rem; line-height: 1.7; color: var(--muted-foreground); }

@media (min-width: 768px) {
  .why-grid { grid-template-columns: repeat(4, 1fr); column-gap: 2.5rem; }
}

/* featured article tiles */
.featured-grid {
  margin-top: 2rem;
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .featured-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .featured-grid { grid-template-columns: repeat(3, 1fr); } }

.tile {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-sm);
  border: 1px solid var(--hairline);
  background-color: var(--paper-raise);
  padding: 1.25rem;
  transition: border-color 0.2s;
}
.tile:hover { border-color: color-mix(in oklab, var(--foreground) 40%, transparent); }
.tile h3 { margin-top: 0.75rem; font-size: 1.05rem; line-height: 1.4; transition: color 0.2s; }
.tile:hover h3 { color: var(--accent); }
.tile p.excerpt {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--muted-foreground);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tile-meta {
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  font-size: 0.72rem;
  color: var(--muted-foreground);
}

/* categories */
.cat-list { margin-top: 1.75rem; display: flex; flex-wrap: wrap; gap: 0.65rem; }

.category-grid {
  margin-top: 2rem;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .category-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .category-grid { grid-template-columns: repeat(3, 1fr); } }

.category-card {
  display: block;
  border: 1px solid var(--hairline);
  background-color: var(--paper-raise);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  transition: border-color 0.2s;
}
.category-card:hover { border-color: color-mix(in oklab, var(--foreground) 40%, transparent); }
.category-card h3 { font-size: 1.1rem; transition: color 0.2s; }
.category-card:hover h3 { color: var(--accent); }
.category-card p { margin-top: 0.6rem; font-size: 0.88rem; line-height: 1.6; color: var(--muted-foreground); }

/* two column CTA + steps */
.process-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
.process-grid h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
.process-grid p.copy { margin-top: 1rem; max-width: 46ch; font-size: 0.92rem; line-height: 1.7; color: var(--muted-foreground); }
.steps { display: flex; flex-direction: column; }
.steps li {
  display: flex;
  gap: 1rem;
  border-bottom: 1px solid var(--hairline);
  padding-block: 1rem;
}
.steps li:last-child { border-bottom: 0; }
.steps .num { font-family: var(--font-display); font-size: 0.95rem; color: var(--brass); }
.steps .step-title { font-size: 0.88rem; font-weight: 500; color: var(--accent); }
.steps .step-copy { margin-top: 0.25rem; font-size: 0.82rem; line-height: 1.7; color: var(--muted-foreground); }

/* closing CTA */
.cta-center { text-align: center; padding-block: 5rem; }
.cta-center h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.cta-center p { margin: 1rem auto 0; max-width: 52ch; font-size: 0.95rem; color: var(--muted-foreground); }
.cta-center .btn { margin-top: 2rem; }

.cta-split {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 4rem;
}
.cta-split h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }

/* ==========================================================================
   Blog listing
   ========================================================================== */
.filter-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.article-grid {
  margin-top: 3.5rem;
  display: grid;
  gap: 3rem 3rem;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) { .article-grid { grid-template-columns: repeat(3, 1fr); } }

.article-card .card-head { display: flex; align-items: center; gap: 0.75rem; }
.article-card .rule { height: 1px; flex: 1; background: var(--hairline); }
.article-card .card-date { font-size: 0.7rem; letter-spacing: 0.02em; color: var(--muted-foreground); }
.article-card h3 {
  margin-top: 1rem;
  font-size: 1.35rem;
  line-height: 1.35;
  transition: color 0.2s;
}
.article-card:hover h3 { color: var(--accent); }
.article-card p.excerpt { margin-top: 0.75rem; font-size: 0.94rem; line-height: 1.7; color: var(--muted-foreground); }
.article-card p.byline { margin-top: 1rem; font-size: 0.8rem; font-weight: 500; }

.empty-state {
  margin-top: 4rem;
  border: 1px dashed var(--hairline);
  padding-block: 4rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted-foreground);
}

/* ==========================================================================
   Article detail page
   ========================================================================== */
.article-header { border-bottom: 1px solid var(--hairline); background-color: var(--paper-raise); }
.article-header .wrap-narrow { padding-block: 4rem; }
.article-header h1 { margin-top: 1.25rem; font-size: clamp(2rem, 4.6vw, 3.2rem); }
.article-header .dek { margin-top: 1.5rem; font-size: 1.05rem; line-height: 1.7; color: var(--muted-foreground); }
.article-header .byline { margin-top: 2rem; font-size: 0.85rem; }
.article-header .byline .name { font-weight: 500; }

@media (min-width: 768px) { .article-header .wrap-narrow { padding-block: 6rem; } }

.article-body { padding-block: 4rem; }
.article-body p { margin-top: 1.5rem; font-size: 1.06rem; line-height: 1.8; }
.article-body p.lead { margin-top: 0; font-size: 1.12rem; line-height: 1.8; }

.author-box {
  margin-top: 4rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  border: 1px solid var(--hairline);
  padding: 1.5rem;
}
.author-avatar {
  font-family: var(--font-display);
  flex-shrink: 0;
  display: flex;
  height: 3.5rem;
  width: 3.5rem;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-foreground);
  font-size: 1.125rem;
}
.author-box h4 { font-size: 1.1rem; }
.author-box p { margin-top: 0.25rem; font-size: 0.875rem; color: var(--muted-foreground); }

/* ==========================================================================
   Forms
   ========================================================================== */
.field { display: block; }
.field .eyebrow { margin-bottom: 0.5rem; display: block; }
.input, select.input, textarea.input {
  width: 100%;
  border: 1px solid var(--hairline);
  background-color: var(--background);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s;
}
.input::placeholder { color: var(--muted-foreground); }
.input:focus { border-color: var(--accent); }
textarea.input.tall { min-height: 10rem; }
textarea.input.short { min-height: 6rem; }
textarea.input.medium { min-height: 14rem; }

.form-grid { display: grid; gap: 1.25rem; }
.form-row-2 { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .form-row-2 { grid-template-columns: 1fr 1fr; } }

.form-panel { border: 1px solid var(--hairline); background-color: var(--paper-raise); padding: 2rem; }
@media (min-width: 768px) { .form-panel { padding: 2.5rem; } }

.form-success {
  border: 1px solid var(--accent);
  background-color: var(--paper-raise);
  padding: 2rem;
  font-size: 0.9rem;
}

.contact-grid { display: grid; gap: 4rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .contact-grid { grid-template-columns: 0.85fr 1.15fr; } }
.contact-list { display: flex; flex-direction: column; gap: 2.5rem; }
.contact-list .item { padding-top: 1.25rem; }
.contact-list .email { margin-top: 0.5rem; font-size: 1.1rem; }
.note-aside {
  border-left: 2px solid var(--accent);
  padding-left: 1rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--muted-foreground);
}
.note-aside a { color: var(--foreground); }

/* ==========================================================================
   About page
   ========================================================================== */
.two-col { display: grid; gap: 4rem; grid-template-columns: 1fr; padding-block: 5rem; }
@media (min-width: 768px) { .two-col { grid-template-columns: 1fr 1fr; } }
.two-col .item { padding-top: 1.5rem; }
.two-col h2 { margin-top: 0.75rem; font-size: 1.6rem; }
.two-col p { margin-top: 1rem; line-height: 1.7; color: var(--muted-foreground); }

.stat-grid { display: grid; gap: 2.5rem; grid-template-columns: 1fr; padding-block: 4rem; }
@media (min-width: 640px) { .stat-grid { grid-template-columns: repeat(3, 1fr); } }
.stat-grid .item { padding-top: 1.5rem; }
.stat-grid .num { font-size: 2.6rem; line-height: 1; }
.stat-grid .eyebrow { margin-top: 0.75rem; }

/* ==========================================================================
   Write for us page
   ========================================================================== */
.list-block { padding-top: 1.5rem; }
.list-block h3 { font-size: 1.4rem; }
.list-block ul { margin-top: 1.25rem; display: flex; flex-direction: column; gap: 0.75rem; }
.list-block li { display: flex; gap: 0.75rem; font-size: 0.95rem; color: var(--muted-foreground); }
.list-block .mark { color: var(--accent); flex-shrink: 0; }

.topics-grid { display: grid; gap: 4rem; grid-template-columns: 1fr; padding-block: 5rem; }
@media (min-width: 768px) { .topics-grid { grid-template-columns: 1fr 1fr; } }

.how-it-works { border-block: 1px solid var(--hairline); background-color: var(--paper-dim); }
.how-it-works .wrap { padding-block: 5rem; }
.how-it-works h2 { margin-top: 1rem; font-size: clamp(1.7rem, 3vw, 2.3rem); }
.hiw-grid { margin-top: 3rem; display: grid; gap: 2.5rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .hiw-grid { grid-template-columns: repeat(4, 1fr); } }
.hiw-grid .item { padding-top: 1.25rem; }
.hiw-grid h4 { margin-top: 0.75rem; font-size: 1.12rem; }
.hiw-grid p { margin-top: 0.75rem; font-size: 0.9rem; line-height: 1.7; color: var(--muted-foreground); }

.submit-section { padding-block: 5rem; }
.submit-section h2 { margin-top: 1rem; font-size: clamp(1.8rem, 3.4vw, 2.4rem); }
.submit-section form { margin-top: 2.5rem; }
.disclaimer { font-size: 0.75rem; color: var(--muted-foreground); }

/* ==========================================================================
   404
   ========================================================================== */
.not-found {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-inline: 1rem;
  text-align: center;
}
.not-found h1 { font-size: 5rem; font-weight: 700; }
.not-found h2 { margin-top: 1rem; font-size: 1.25rem; font-weight: 600; }
.not-found p { margin-top: 0.5rem; font-size: 0.9rem; color: var(--muted-foreground); }
.not-found .btn { margin-top: 1.5rem; }

/* ==========================================================================
   Misc
   ========================================================================== */
.hidden { display: none !important; }