/* ---------- Reset & base ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #fdfdfc;
  --surface: #ffffff;
  --text: #1a1a1a;
  --text-muted: #6b6b6b;
  --border: #e6e4e0;
  --accent: #d97757;
  --accent-hover: #c2653f;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --bg: #15151a;
  --surface: #1d1d23;
  --text: #eeeeee;
  --text-muted: #9a9a9a;
  --border: #2c2c33;
  --accent: #e0916d;
  --accent-hover: #eda481;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
  transition: background var(--transition), border-color var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 10px 0;
  gap: 16px;
}

/* ---------- Header newsletter form ---------- */
.header-newsletter {
  flex: 1 1 auto;
  max-width: 340px;
}

.newsletter-inline-form {
  display: flex;
  gap: 8px;
  width: 100%;
}

.newsletter-inline-input {
  flex: 1;
  min-width: 0;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
  box-sizing: border-box;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.newsletter-inline-input::placeholder {
  color: var(--text-muted);
}

.newsletter-inline-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.newsletter-inline-button {
  padding: 9px 16px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 0.85rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition);
}

.newsletter-inline-button:hover {
  background: var(--accent-hover);
}

.nav {
  display: flex;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text);
  background: var(--surface);
}

.nav-link.active {
  color: var(--accent);
  font-weight: 600;
}

.theme-toggle,
.menu-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border-radius: 6px;
  flex-shrink: 0;
}

.theme-toggle:hover,
.menu-toggle:hover {
  background: var(--surface);
}

.icon {
  width: 20px;
  height: 20px;
}

.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 32px;
  height: 32px;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- Pages ---------- */
.page {
  padding-bottom: 64px;
}

/* ---------- Hero (Home) ---------- */
.hero {
  padding: 56px 0 32px;
}

.hero h1 {
  font-size: 2rem;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 55ch;
}

/* ---------- Page header (About / Business / Newsletter) ---------- */
.page-header {
  padding: 56px 0 32px;
}

.page-header h1 {
  font-size: 1.9rem;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.page-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 55ch;
}

/* ---------- Posts ---------- */
.posts {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.post-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.post-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.post-title {
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}

.post-date {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 14px;
}

.post-excerpt {
  color: var(--text-muted);
  margin-bottom: 14px;
  font-size: 0.97rem;
}

.read-more {
  position: relative;
  z-index: 1;
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  transition: color var(--transition), text-decoration-color var(--transition);
}

.read-more:hover {
  color: var(--accent-hover);
  text-decoration-color: var(--accent-hover);
}

/* ---------- Prose card (About / Business / Newsletter content) ---------- */
.prose-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.prose-card p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 65ch;
}

/* ---------- CTA button ---------- */
.cta-button {
  display: inline-block;
  margin-top: 20px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 8px;
  transition: background var(--transition);
}

.cta-button:hover {
  background: var(--accent-hover);
}

/* ---------- Newsletter form (Newsletter page) ---------- */
.newsletter-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.newsletter-form input {
  flex: 1;
  min-width: 200px;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
}

.newsletter-form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.newsletter-form button {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  border: none;
  padding: 12px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: background var(--transition);
}

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

/* ---------- Article page ---------- */
.article-page {
  padding-bottom: 72px;
}

.back-link {
  display: inline-block;
  margin-top: 32px;
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
  transition: color var(--transition), text-decoration-color var(--transition);
}

.back-link:hover {
  color: var(--accent-hover);
  text-decoration-color: var(--accent-hover);
}

.article-header {
  padding: 24px 0 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}

.article-title {
  font-size: 2.1rem;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 16px;
}

.article-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 65ch;
  margin-bottom: 16px;
}

.article-date {
  display: block;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.article-body p {
  margin-bottom: 20px;
  font-size: 1.03rem;
  max-width: 68ch;
}

.article-body .aside {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.95rem;
}

.article-body ul {
  margin: 0 0 24px 1.3em;
  max-width: 68ch;
}

.article-body li {
  margin-bottom: 10px;
  font-size: 1.03rem;
}

.section-heading {
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  margin: 36px 0 18px;
}

/* ---------- Series list (on the series hub page) ---------- */
.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0 48px;
}

.series-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.series-item {
  display: flex;
  gap: 14px;
  align-items: baseline;
}

.series-number {
  flex-shrink: 0;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.95rem;
  min-width: 1.6em;
}

.series-content {
  font-size: 1.03rem;
}

.series-title {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  font-weight: 700;
  transition: color var(--transition), text-decoration-color var(--transition);
}

.series-title:hover {
  color: var(--accent-hover);
  text-decoration-color: var(--accent-hover);
}

.series-title.disabled {
  color: var(--text-muted);
  font-weight: 700;
  cursor: default;
}

.series-teaser {
  color: var(--text-muted);
}

/* ---------- Article kicker (Part label) ---------- */
.article-kicker {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

/* ---------- Blockquotes within article body ---------- */
.article-body blockquote {
  margin: 28px 0 28px 8px;
  padding: 6px 0 6px 28px;
  border-left: 3px solid var(--border);
  color: var(--text);
  font-style: italic;
  font-size: 1.02rem;
  max-width: 66ch;
}

.article-body blockquote p {
  margin-bottom: 0;
}

.article-body p a,
.article-body li a,
.article-body blockquote a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  transition: color var(--transition);
}

.article-body p a:hover,
.article-body li a:hover,
.article-body blockquote a:hover {
  color: var(--accent-hover);
  text-decoration-color: var(--accent-hover);
}

/* ---------- Figures / images within article body ---------- */
.article-body figure {
  margin: 32px 0;
}

.article-body figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.article-body figcaption {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
  margin-top: 10px;
}

/* ---------- Next-part teaser card ---------- */
.next-part-card {
  display: block;
  margin-top: 48px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.next-part-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.next-part-label {
  display: block;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.next-part-title {
  display: block;
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  transition: color var(--transition), text-decoration-color var(--transition);
}

.next-part-card:hover .next-part-title {
  color: var(--accent-hover);
  text-decoration-color: var(--accent-hover);
}

.next-part-teaser-text {
  display: block;
  color: var(--text-muted);
  font-size: 0.97rem;
}

/* ---------- Article page layout (TOC + content + newsletter sidebar) ---------- */
.article-page-wrapper {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.article-layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr) 240px;
  gap: 48px;
  align-items: start;
}

.article-layout.no-toc {
  grid-template-columns: minmax(0, 1fr) 240px;
}

.article-layout.no-toc .toc-sidebar {
  display: none;
}

.article-main {
  min-width: 0;
}

/* Table of contents — desktop sidebar */
.toc-sidebar {
  position: sticky;
  top: 100px;
}

.toc-label,
.newsletter-cta-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.toc-nav {
  display: flex;
  flex-direction: column;
}

.toc-link {
  display: block;
  padding: 7px 0 7px 12px;
  border-left: 2px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.4;
  transition: color var(--transition), border-color var(--transition);
}

.toc-link:hover {
  color: var(--text);
}

.toc-link.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* Newsletter — desktop sidebar */
.newsletter-sidebar {
  position: sticky;
  top: 100px;
}

.sidebar-newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.sidebar-newsletter-form .newsletter-inline-input,
.sidebar-newsletter-form .newsletter-inline-button {
  width: 100%;
}

/* Mobile-only TOC (inline, non-sticky) */
.toc-mobile {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 24px 0 8px;
}

/* Mobile-only newsletter block (inline, non-sticky) */
.newsletter-mobile {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin: 28px 0;
}

/* ---------- Business page: offers ---------- */
.business-header {
  text-align: center;
}

.offer-heading {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  color: var(--text);
}

.offer-heading + .service-list {
  margin-bottom: 32px;
}

.service-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
}

.service-list li {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
}

.hire-options {
  display: flex;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 28px;
}

.hire-option {
  flex: 1;
  padding: 18px 20px;
  text-align: center;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text);
  background: var(--bg);
}

.hire-divider {
  width: 1px;
  background: var(--border);
  flex-shrink: 0;
}

.contact-line {
  color: var(--text-muted) !important;
  font-size: 0.98rem;
  margin-bottom: 0 !important;
}

.contact-line a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  font-weight: 600;
  transition: color var(--transition), text-decoration-color var(--transition);
}

.contact-line a:hover {
  color: var(--accent-hover);
  text-decoration-color: var(--accent-hover);
}

/* ---------- Business page: client logos ---------- */
.clients-title {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-align: center;
  margin-bottom: 28px;
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
}

.logo-tile {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.logo-tile:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.logo-tile img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

@media (max-width: 640px) {
  .logo-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
  }

  .logo-tile {
    padding: 12px;
  }

  .hire-options {
    flex-direction: column;
  }

  .hire-divider {
    width: auto;
    height: 1px;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: auto;
  transition: border-color var(--transition);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.socials {
  display: flex;
  gap: 16px;
}

.socials a {
  color: var(--text-muted);
  transition: color var(--transition);
}

.socials a:hover {
  color: var(--accent);
}

/* ---------- Responsive ---------- */
/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .article-layout {
    display: block;
  }

  .toc-sidebar,
  .newsletter-sidebar {
    display: none;
  }

  .toc-mobile,
  .newsletter-mobile {
    display: block;
  }
}

@media (max-width: 640px) {
  .menu-toggle {
    display: flex;
  }

  .header-newsletter {
    max-width: none;
  }

  .newsletter-inline-input {
    font-size: 0.8rem;
    padding: 9px 10px;
  }

  .newsletter-inline-button {
    padding: 9px 12px;
    font-size: 0.8rem;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 8px 24px 16px;
    gap: 2px;
    display: none;
  }

  .nav.open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 10px 12px;
  }

  .hero,
  .page-header {
    padding: 40px 0 24px;
  }

  .hero h1,
  .page-header h1 {
    font-size: 1.6rem;
  }

  .post-card,
  .prose-card {
    padding: 18px;
  }

  .article-title {
    font-size: 1.6rem;
  }

  .article-subtitle {
    font-size: 1rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}