:root {
  --font-sans: 'Space Grotesk', system-ui, sans-serif;
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-text: #0f172a;
  --color-muted: #64748b;
  --color-border: #e2e8f0;
  --color-accent: #65a30d;
  --color-accent-hover: #4d7c0f;
  --color-code-bg: #f1f5f9;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --max-width: 42rem;
  --page-width: 72rem;
}

[data-theme='dark'] {
  --color-bg: #030712;
  --color-surface: #111827;
  --color-text: #f8fafc;
  --color-muted: #94a3b8;
  --color-border: #1f2937;
  --color-accent: #a3e635;
  --color-accent-hover: #bef264;
  --color-code-bg: #111827;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  transition: background 0.2s ease, color 0.2s ease;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

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

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

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: #000;
}

.site {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  width: min(100% - 2rem, var(--page-width));
  margin: 0 auto;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.25rem;
}

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

.brand-logo {
  border-radius: 999px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

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

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

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.theme-icon {
  font-size: 1rem;
  line-height: 1;
}

[data-theme='light'] .theme-icon-moon,
[data-theme='dark'] .theme-icon-sun {
  display: none;
}

.main {
  flex: 1;
  padding: 2.5rem 0 4rem;
}

.hero {
  margin-bottom: 3rem;
}

.hero-title {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.hero-description,
.page-header-block p,
.post-description,
.page-description {
  margin: 0;
  color: var(--color-muted);
  font-size: 1.125rem;
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-heading h2,
.page-header-block h1,
.page-title,
.post-title {
  margin: 0;
  letter-spacing: -0.02em;
}

.page-header-block {
  margin-bottom: 2rem;
}

.page-header-block h1 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: 0.75rem;
}

.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.post-card a {
  display: block;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.post-card a:hover {
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.post-card time {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.post-card h2,
.post-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}

.post-card p {
  margin: 0;
  color: var(--color-muted);
}

.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.post-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.15;
  margin: 0.75rem 0;
}

.post-meta {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.post-tags,
.post-card .post-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-left: 0.75rem;
}

.tag {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-accent) 18%, transparent);
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.prose {
  max-width: var(--max-width);
}

.prose :where(h1, h2, h3, h4) {
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.prose :where(p, ul, ol, pre, blockquote) {
  margin: 0 0 1.25rem;
}

.prose :where(ul, ol) {
  padding-left: 1.4rem;
}

.prose :where(li + li) {
  margin-top: 0.35rem;
}

.prose :where(blockquote) {
  padding-left: 1rem;
  border-left: 3px solid var(--color-accent);
  color: var(--color-muted);
}

.prose :where(code) {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  padding: 0.15rem 0.35rem;
  border-radius: 0.35rem;
  background: var(--color-code-bg);
}

.prose :where(pre) {
  overflow-x: auto;
  padding: 1rem 1.1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--color-border);
  background: var(--color-code-bg);
}

.prose :where(pre code) {
  padding: 0;
  background: transparent;
}

.text-link {
  font-weight: 600;
  text-decoration: none;
}

.text-link:hover {
  text-decoration: underline;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  color: var(--color-muted);
}

.footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--color-muted);
  text-decoration: none;
}

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

.footer-copy {
  margin: 0;
  font-size: 0.95rem;
}

.not-found {
  text-align: center;
  padding: 4rem 0;
}

.not-found h1 {
  font-size: 4rem;
  margin: 0 0 0.5rem;
}

.button {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  background: var(--color-accent);
  color: #111827;
  text-decoration: none;
  font-weight: 600;
}

.button:hover {
  background: var(--color-accent-hover);
  color: #111827;
}

.author-layout {
  border-top: 1px solid var(--color-border);
}

.author-layout-heading {
  padding: 1.5rem 0 2rem;
}

.author-layout-heading h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.author-layout-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-top: 2rem;
}

.author-sidebar {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.25rem;
}

.author-avatar {
  width: 12rem;
  height: 12rem;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1rem;
}

.author-name {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.author-meta {
  margin: 0;
  color: var(--color-muted);
}

.author-social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text);
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.social-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.author-prose {
  max-width: var(--max-width);
}

@media (min-width: 1024px) {
  .author-layout-body {
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
  }

  .author-sidebar {
    padding-top: 2rem;
  }
}

@media (max-width: 640px) {
  .brand-title {
    display: none;
  }

  .nav {
    gap: 0.85rem;
  }

  .header {
    padding-top: 1.5rem;
  }
}