/* === Reset & Base === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #ffffff;
  --color-text: #2d2d2d;
  --color-text-light: #6b6b6b;
  --color-accent: #3d5a80;
  --color-accent-hover: #2c4460;
  --color-border: #e8e8e8;
  --color-card-bg: #fafafa;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Lora', Georgia, 'Times New Roman', serif;
  --max-width: 680px;
}

html {
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* === Layout === */
.site-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-content {
  flex: 1;
  padding: 2rem 0;
}

/* === Header === */
.site-header {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-header__title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

/* === Navigation === */
.site-nav {
  display: flex;
  gap: 1.5rem;
}

.site-nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-light);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.site-nav__link:hover,
.site-nav__link--active {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

/* === Post Feed (Home) === */
.post-feed {
  display: flex;
  flex-direction: column;
}

.post-card {
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-border);
}

.post-card:last-child {
  border-bottom: none;
}

.post-card__title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.4rem;
}

.post-card__title a {
  color: var(--color-text);
  text-decoration: none;
}

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

.post-card__meta {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-card__excerpt {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 0.75rem;
}

.post-card__read-more {
  font-size: 0.85rem;
  font-weight: 500;
}

.empty-feed {
  padding: 3rem 0;
  color: var(--color-text-light);
  text-align: center;
  font-style: italic;
}

/* === Single Post === */
.post__header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.post__title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.post__date {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post__content {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.8;
}

.post__content h2 {
  font-family: var(--font-sans);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 2rem 0 0.75rem;
}

.post__content h3 {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}

.post__content p {
  margin-bottom: 1.25rem;
}

.post__content ul, .post__content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.post__content li {
  margin-bottom: 0.4rem;
}

.post__content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  color: var(--color-text-light);
  font-style: italic;
}

.post__content code {
  background: var(--color-card-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
}

.post__content pre {
  background: #f5f5f5;
  padding: 1.25rem;
  border-radius: 6px;
  overflow-x: auto;
  margin-bottom: 1.25rem;
}

.post__content pre code {
  background: none;
  padding: 0;
}

.post__content img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 1rem 0;
}

.post__content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}

/* === Page === */
.page__title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.page__content {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.8;
}

.page__content p {
  margin-bottom: 1.25rem;
}

.page__content ul, .page__content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.page__content li {
  margin-bottom: 0.4rem;
}

.page__content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}

.page__content strong {
  font-weight: 600;
}

/* === Footer === */
.site-footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  margin-top: 2rem;
}

.site-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.site-footer__links {
  display: flex;
  gap: 1rem;
}

.site-footer__links a {
  color: var(--color-text-light);
  font-weight: 500;
}

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

/* === Responsive === */
@media (max-width: 600px) {
  html {
    font-size: 16px;
  }

  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .post__title {
    font-size: 1.6rem;
  }

  .page__title {
    font-size: 1.6rem;
  }
}