:root {
  color-scheme: light;
  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: "Georgia", "Times New Roman", serif;
  --accent: #1f7cff;
  --bg-light: #ffffff;
  --text-light: #0b172a;
  --border-light: rgba(15, 23, 42, 0.06);
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --shadow-sm: 0 8px 24px rgba(15, 23, 42, 0.08);
  --max-width: min(72rem, calc(100% - 2.5rem));
  --content-width: min(65ch, var(--max-width));
  --transition: 150ms ease;
}

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

html {
  font-size: clamp(15px, 0.9vw + 0.5rem, 18px);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  line-height: 1.6;
  background-color: var(--bg-light);
  color: var(--text-light);
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration-thickness: 0.12em;
  text-underline-offset: 0.2em;
  transition: color var(--transition), text-decoration-color var(--transition);
}

a:hover,
a:focus-visible {
  color: var(--accent);
}

p {
  margin-block: 0 1rem;
}

strong {
  font-weight: 600;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
  transition: transform var(--transition);
  z-index: 999;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
}

.site-header > * {
  margin-inline: auto;
  max-width: var(--max-width);
  padding-inline: clamp(1rem, 4vw, 2rem);
  padding-block: 1.2rem;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
}

.brand-tagline {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(15, 23, 42, 0.7);
}

nav {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

nav a {
  display: inline-flex;
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: inherit;
}

nav a[aria-current="page"] {
  background-color: rgba(31, 124, 255, 0.12);
  color: var(--accent);
  font-weight: 600;
}

.nav-mobile {
  width: 100%;
  display: none;
}

.nav-mobile summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  cursor: pointer;
}

.nav-mobile[open] summary {
  background-color: rgba(31, 124, 255, 0.08);
  border-color: rgba(31, 124, 255, 0.3);
}

.nav-mobile ul {
  flex-direction: column;
  margin-top: 0.75rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
}

.nav-desktop {
  margin-left: auto;
}

@media (max-width: 768px) {
  nav {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-mobile {
    display: block;
  }

  .nav-desktop {
    display: none;
  }
}

main {
  margin-inline: auto;
  max-width: var(--max-width);
  padding-inline: clamp(1rem, 4vw, 2rem);
  padding-block: clamp(2rem, 4vw, 3rem);
}

.hero {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  padding: clamp(1.5rem, 5vw, 3rem);
  background: linear-gradient(180deg, rgba(31, 124, 255, 0.04) 0%, rgba(31, 124, 255, 0) 100%);
  border-radius: var(--radius-md);
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
  box-shadow: var(--shadow-sm);
}

.hero-content {
  display: grid;
  gap: 1rem;
}

.hero-media {
  justify-self: center;
}

.profile-photo {
  width: clamp(8rem, 18vw, 12rem);
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
}

@media (min-width: 768px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .hero-media {
    justify-self: end;
  }
}

.hero h1 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  margin: 0;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  margin: 0;
  color: rgba(15, 23, 42, 0.75);
}

.section-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.section-action {
  font-size: 0.95rem;
  color: var(--accent);
}

.section-action::after {
  content: " →";
}

.latest-posts ol,
.highlights ul,
.post-list,
.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.latest-posts article,
.post-list article {
  padding: 1.5rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: #ffffff;
  transition: transform var(--transition), box-shadow var(--transition);
}

.latest-posts article:hover,
.latest-posts article:focus-within,
.post-list article:hover,
.post-list article:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.latest-posts .meta,
.post-list .meta {
  font-size: 0.9rem;
  color: rgba(15, 23, 42, 0.6);
}

.tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  background-color: rgba(31, 124, 255, 0.12);
  color: var(--accent);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  margin-left: 0.35rem;
}

.newsletter-teaser,
.contact-list li,
.article-header {
  max-width: var(--content-width);
}

.page-header {
  max-width: var(--content-width);
}

.page-header.with-media {
  max-width: var(--max-width);
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
}

.page-header.with-media .page-header-content {
  max-width: var(--content-width);
}

.page-header-media {
  justify-self: center;
}

@media (min-width: 720px) {
  .page-header.with-media {
    grid-template-columns: minmax(0, 2fr) auto;
  }

  .page-header-media {
    justify-self: end;
  }
}

.newsletter-teaser {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background: rgba(31, 124, 255, 0.04);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  border: none;
  background-color: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform var(--transition), box-shadow var(--transition);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.highlights ul {
  margin-top: 1.5rem;
}

.highlights li {
  border-left: 3px solid rgba(31, 124, 255, 0.35);
  padding-left: 1rem;
}

.page-header .lead {
  margin-top: 0.75rem;
  color: rgba(15, 23, 42, 0.7);
}

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

form {
  margin-top: 1.5rem;
  padding: 1.5rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  display: grid;
  gap: 1rem;
}

form label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.form-field {
  display: flex;
  flex-direction: column;
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  background: rgba(255, 255, 255, 0.9);
  color: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: rgba(31, 124, 255, 0.8);
  box-shadow: 0 0 0 3px rgba(31, 124, 255, 0.25);
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

.form-field .required {
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(15, 23, 42, 0.6);
}

.note {
  font-size: 0.9rem;
  color: rgba(15, 23, 42, 0.65);
}

.honey {
  position: absolute;
  left: -5000px;
}

.beehiiv-wrapper {
  margin-top: 1.25rem;
}

.beehiiv-embed {
  width: 100% !important;
  border: 1px solid var(--border-light) !important;
  border-radius: var(--radius-md) !important;
  background: rgba(31, 124, 255, 0.05) !important;
}

.contact-list li {
  padding: 1rem 1.25rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: #ffffff;
}

.contact-list a {
  color: var(--accent);
  font-weight: 600;
}

.post-list article h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.article-kicker {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: rgba(15, 23, 42, 0.55);
  margin-bottom: 0.5rem;
}

.article-header h1 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: clamp(2rem, 4vw, 2.6rem);
  letter-spacing: -0.015em;
}

.article-meta {
  margin: 0;
  font-size: 0.95rem;
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  background: rgba(31, 124, 255, 0.14);
  color: var(--accent);
  font-weight: 600;
}

.article-nav {
  margin-top: 2.5rem;
  display: flex;
  justify-content: flex-start;
  border-top: 1px solid var(--border-light);
  padding-top: 1.5rem;
}

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

footer {
  background: rgba(15, 23, 42, 0.03);
  border-top: 1px solid var(--border-light);
  margin-top: clamp(2rem, 5vw, 4rem);
}

.site-footer {
  margin-inline: auto;
  max-width: var(--max-width);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.site-footer p {
  margin-top: 0;
  color: rgba(15, 23, 42, 0.7);
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  gap: 0.75rem 1.25rem;
  padding: 0;
  margin: 1rem 0 0;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: inherit;
}

@media (max-width: 720px) {
  .hero {
    padding: clamp(1.25rem, 5vw, 2rem);
  }

  nav ul {
    gap: 0.5rem;
  }
}

blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  background: rgba(31, 124, 255, 0.08);
  border-inline-start: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

code {
  font-family: "JetBrains Mono", SFMono-Regular, ui-monospace, "DejaVu Sans Mono", monospace;
  font-size: 0.95em;
  background: rgba(15, 23, 42, 0.08);
  padding: 0.2em 0.35em;
  border-radius: 0.35rem;
}