/* Tech Pulse Daily — editorial layout */
:root {
  --ink: #1c1917;
  --ink-soft: #44403c;
  --paper: #faf7f2;
  --paper-alt: #f3ede4;
  --card: #fffcf8;
  --line: #e7e0d5;
  --accent: #c2410c;
  --accent-dark: #9a3412;
  --teal: #0f766e;
  --shadow: 0 12px 40px rgba(28, 25, 23, 0.08);
  --radius: 14px;
  --max: 1120px;
  --content: 680px;
  --display: "Fraunces", Georgia, serif;
  --sans: "Source Sans 3", system-ui, sans-serif;
  --serif: "Source Serif 4", Georgia, serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(194, 65, 12, 0.06), transparent 32%),
    linear-gradient(180deg, #fffdf9 0%, var(--paper) 100%);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.75;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-dark); text-underline-offset: 0.15em; }
a:hover { color: var(--accent); }

.container {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(255, 252, 248, 0.88);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.8rem;
  background:
    linear-gradient(135deg, #fb923c, var(--accent));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.35);
}

.brand-text strong {
  display: block;
  font-family: var(--display);
  font-size: 1.15rem;
  line-height: 1.1;
}

.brand-text small {
  display: block;
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.site-nav {
  display: flex;
  gap: 1.25rem;
  font-family: var(--sans);
  font-size: 0.95rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 500;
}

.site-nav a:hover,
.site-nav a.is-active { color: var(--accent-dark); }

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--card);
  padding: 0.55rem;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 0.35rem 0;
  background: var(--ink);
}

/* Homepage */
.home-hero {
  padding: 4.5rem 0 3rem;
}

.home-hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--teal);
  font-weight: 600;
}

.home-hero h1 {
  font-family: var(--display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.05;
  margin: 0.5rem 0 1rem;
  max-width: 12ch;
}

.home-lead {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 42rem;
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.hero-card h2 {
  font-family: var(--display);
  font-size: 1.35rem;
  margin-top: 0;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.hero-stats div {
  background: var(--paper-alt);
  border-radius: 0.8rem;
  padding: 0.85rem;
  text-align: center;
}

.hero-stats strong {
  display: block;
  font-family: var(--display);
  font-size: 1.4rem;
}

.hero-stats span {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin: 3rem 0 1.25rem;
}

.section-head h2 {
  font-family: var(--display);
  font-size: 2rem;
  margin: 0;
}

.section-head p {
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--sans);
}

.feature-grid,
.article-grid,
.topic-grid {
  display: grid;
  gap: 1rem;
}

.feature-grid { grid-template-columns: 1.4fr 1fr 1fr; }
.article-grid { grid-template-columns: repeat(3, 1fr); }
.topic-grid { grid-template-columns: repeat(4, 1fr); margin-bottom: 4rem; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.card-feature {
  grid-row: span 2;
  padding: 1.5rem;
  background:
    linear-gradient(160deg, rgba(15, 118, 110, 0.08), transparent 55%),
    var(--card);
}

.card-kicker,
.card-meta {
  font-family: var(--sans);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--teal);
  font-weight: 600;
}

.card h3 {
  font-family: var(--display);
  font-size: 1.35rem;
  line-height: 1.2;
  margin: 0.5rem 0;
}

.card h3 a { text-decoration: none; color: inherit; }
.card p { margin: 0; color: var(--ink-soft); font-size: 1rem; }

.topic-card {
  text-decoration: none;
  color: inherit;
  min-height: 120px;
}

.topic-card strong {
  display: block;
  font-family: var(--display);
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.cta-band {
  margin: 4rem 0;
  padding: 2rem;
  border-radius: calc(var(--radius) + 4px);
  background: linear-gradient(135deg, #134e4a, #0f766e);
  color: #ecfdf5;
}

.cta-band h2 {
  font-family: var(--display);
  margin-top: 0;
}

.cta-band a {
  color: #fff;
  font-family: var(--sans);
  font-weight: 600;
}

/* Blog index */
.blog-hero,
.page-hero,
.post-hero {
  padding: 3rem 0 2rem;
}

.page-hero h1,
.blog-hero h1,
.post-hero h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
  margin: 0;
}

.page-lead,
.post-subtitle {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 42rem;
}

.blog-list { padding-bottom: 4rem; }

.blog-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}

.blog-date {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.blog-item h2 {
  font-family: var(--display);
  font-size: 1.6rem;
  margin: 0.25rem 0;
}

.blog-item h2 a { text-decoration: none; color: inherit; }

.blog-tags {
  font-family: var(--sans);
  font-size: 0.82rem;
  color: var(--teal);
  font-weight: 600;
}

/* Post layout */
.post-hero {
  background: var(--paper-alt);
  border-bottom: 1px solid var(--line);
}

.post-hero.warm {
  background:
    linear-gradient(120deg, rgba(194, 65, 12, 0.08), transparent 60%),
    var(--paper-alt);
}

.post-hero.cool {
  background:
    linear-gradient(120deg, rgba(15, 118, 110, 0.08), transparent 60%),
    var(--paper-alt);
}

.post-kicker {
  font-family: var(--sans);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--teal);
  font-weight: 600;
}

.post-byline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-family: var(--sans);
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-top: 1rem;
}

.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 2rem;
  padding: 2.5rem 0 4rem;
  align-items: start;
}

.post-toc {
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin-bottom: 1.5rem;
  font-family: var(--sans);
  font-size: 0.92rem;
}

.post-toc ul {
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
}

.post-toc a {
  text-decoration: none;
  color: var(--ink-soft);
}

.post-toc a:hover { color: var(--accent-dark); }

.prose h2,
.prose h3 {
  font-family: var(--display);
  line-height: 1.2;
  scroll-margin-top: 6rem;
}

.prose h2 { font-size: 1.75rem; margin-top: 2.5rem; }
.prose h3 { font-size: 1.25rem; margin-top: 1.75rem; }

.prose blockquote {
  margin: 1.5rem 0;
  padding: 0.2rem 0 0.2rem 1rem;
  border-left: 3px solid var(--accent);
  color: var(--ink-soft);
  font-style: italic;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 0.95rem;
  margin: 1.5rem 0;
}

.prose th,
.prose td {
  border: 1px solid var(--line);
  padding: 0.65rem 0.75rem;
  text-align: left;
}

.prose th { background: var(--paper-alt); }

.prose pre {
  background: #1c1917;
  color: #f5f5f4;
  padding: 1rem 1.1rem;
  border-radius: 0.8rem;
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.55;
}

.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
}

.prose :not(pre) > code {
  background: var(--paper-alt);
  padding: 0.12em 0.35em;
  border-radius: 0.35rem;
}

.callout {
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
  border-radius: 0.8rem;
  padding: 1rem 1.1rem;
  margin: 1.5rem 0;
  font-family: var(--sans);
  font-size: 0.98rem;
}

.callout-warn {
  border-left-color: var(--accent);
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.checklist li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: 0.65rem;
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-weight: 700;
}

.author-box {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  margin-top: 3rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.author-avatar {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #fff;
  font-family: var(--display);
  font-size: 1.4rem;
}

.author-label,
.author-name {
  margin: 0;
  font-family: var(--sans);
}

.author-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft); }
.author-name { font-weight: 700; font-size: 1rem; }
.author-bio { margin: 0.35rem 0; font-size: 0.98rem; color: var(--ink-soft); }
.author-link { font-family: var(--sans); font-size: 0.92rem; font-weight: 600; text-decoration: none; }

.related-posts {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.related-posts h2 {
  font-family: var(--display);
  font-size: 1.35rem;
}

.related-posts ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.related-posts li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--sans);
  font-size: 0.95rem;
}

.related-posts span { color: var(--ink-soft); white-space: nowrap; }

.post-sidebar { position: sticky; top: 5.5rem; }

.sidebar-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
}

.sidebar-card h3 {
  font-family: var(--display);
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
}

.sidebar-card p {
  margin: 0;
  font-family: var(--sans);
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.ad-label {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.5rem;
}

.ad-placeholder {
  min-height: 250px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--line);
  border-radius: 0.6rem;
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-align: center;
  padding: 1rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  background: #fffdf9;
  padding-top: 3rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
}

.footer-grid h2,
.footer-grid h3 {
  font-family: var(--display);
  margin-top: 0;
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-family: var(--sans);
  font-size: 0.95rem;
}

.footer-grid li { margin-bottom: 0.45rem; }
.footer-meta,
.footer-bottom p {
  font-family: var(--sans);
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.footer-bottom {
  margin-top: 2rem;
  padding: 1.25rem 0 2rem;
  border-top: 1px solid var(--line);
}

.cookie-banner {
  position: fixed;
  inset: auto 1rem 1rem 1rem;
  z-index: 30;
}

.cookie-inner {
  max-width: 42rem;
  margin-inline: auto;
  background: #1c1917;
  color: #fafaf9;
  border-radius: 1rem;
  padding: 1rem 1.1rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  box-shadow: var(--shadow);
  font-family: var(--sans);
  font-size: 0.92rem;
}

.cookie-inner a { color: #fdba74; }
.cookie-inner button {
  border: 0;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 0.65rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
}

.page-body { padding-bottom: 4rem; }

.home-cta {
  margin-top: 1.5rem;
  font-family: var(--sans);
}

.contact-note {
  margin-top: 2rem;
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 0.95rem;
}

.hp-field {
  position: absolute;
  left: -9999px;
  height: 0;
  width: 0;
  opacity: 0;
}

.contact-form label {
  display: block;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  max-width: 36rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  font-family: var(--sans);
  font-size: 1rem;
  margin-bottom: 1rem;
  background: var(--card);
}

.contact-form button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  font-family: var(--sans);
  font-weight: 600;
  cursor: pointer;
}

.contact-form button:hover { background: var(--accent-dark); }

.diagram {
  margin: 1.5rem 0 2rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.75rem;
}

.diagram img { width: 100%; height: auto; }

.diagram figcaption {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: 0.5rem 0.25rem 0.15rem;
}

@media (max-width: 960px) {
  .home-hero-grid,
  .feature-grid,
  .article-grid,
  .topic-grid,
  .post-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .card-feature { grid-row: auto; }
  .post-sidebar { position: static; }
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-block; }

  .site-nav {
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(100% + 0.4rem);
    display: none;
    flex-direction: column;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 0.85rem;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open { display: flex; }

  .blog-item { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; }
  .cookie-inner { flex-direction: column; align-items: stretch; }
}