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

:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #555;
  --color-border: #e0e0e0;
  --color-accent: #111;
  --font-heading: 'Georgia', 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --max-width: 1200px;
  --article-width: 720px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

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

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

/* === Accessibility === */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 1000;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

/* === Header / Nav === */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 2rem;
}

.site-header .container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.site-logo img {
  height: 48px;
  width: auto;
}

.site-logo span {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

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

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

.email-icon {
  display: inline-flex;
  align-items: center;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.email-icon:hover {
  color: var(--color-text);
}

.social-icon {
  display: inline-flex;
  align-items: center;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.social-icon:hover {
  color: var(--color-text);
}

/* === Homepage === */
.hero-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 2rem 1rem;
}

.hero-section h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.hero-section p {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
}

/* === Article Grid === */
.article-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.article-card {
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.15s;
  background: #fff;
}

.article-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.article-card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.article-card__body {
  padding: 1.25rem;
}

.article-card__title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.article-card__excerpt {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* === See More Button === */
.see-more-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem 2rem;
  text-align: center;
}

.see-more-btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
}

.see-more-btn:hover {
  background: #f5f5f5;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* === Article Page === */
.article-hero {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
}

.article-container {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

.article-container h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.article-container p {
  margin-bottom: 1.25rem;
  font-size: 1.1rem;
  line-height: 1.8;
}

.article-container h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.article-container h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.article-meta {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  transition: color 0.2s;
}

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

/* === About / Bio === */
.bio-section {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
}

.bio-photo-wrapper {
  flex-shrink: 0;
  text-align: center;
}

.bio-photo {
  width: 220px;
  height: 280px;
  object-fit: cover;
  border-radius: 4px;
}

.bio-photo-caption {
  margin-top: 0.75rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.bio-text p {
  margin-bottom: 1.25rem;
  font-size: 1.1rem;
  line-height: 1.8;
}

@media (max-width: 600px) {
  .bio-section {
    flex-direction: column;
    align-items: center;
  }

  .bio-photo {
    width: 180px;
    height: 230px;
  }
}

/* === Footer === */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

/* === Responsive === */
@media (max-width: 900px) {
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding: 1.5rem;
  }

  .hero-section h1 {
    font-size: 2rem;
  }
}

@media (max-width: 600px) {
  .article-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding: 1rem;
  }

  .site-header {
    padding: 0.75rem 1rem;
  }

  .site-logo img {
    height: 36px;
  }

  .site-logo span {
    font-size: 1.2rem;
  }

  .hero-section {
    padding: 2rem 1rem 0.5rem;
  }

  .hero-section h1 {
    font-size: 1.75rem;
  }

  .article-container {
    padding: 1.5rem 1rem 3rem;
  }

  .article-container h1 {
    font-size: 1.75rem;
  }

  .article-container p {
    font-size: 1rem;
  }
}