@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;1,8..60,300;1,8..60,400&family=Inter:wght@400;500&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #fafaf8;
  --text: #1c1c1a;
  --muted: #7a7060;
  --accent: #2a4a00;
  --border: #e0ddd8;
}

html {
  font-size: 20px;
  line-height: 1.75;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Source Serif 4', Georgia, serif;
  font-weight: 400;
  padding: 0 1.5rem;
}

/* ── Layout ─────────────────────────────────── */

.site-container {
  max-width: 720px;
  margin: 0 auto;
}

/* ── Nav ─────────────────────────────────────── */

nav {
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
  padding: 1.4rem 0 1.2rem;
  display: flex;
  align-items: baseline;
  gap: 1.8rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3.5rem;
}

.nav-name {
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
  letter-spacing: 0.01em;
}

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

nav a {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

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

/* ── About page ──────────────────────────────── */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 170px;
  gap: 3rem;
  align-items: start;
  margin-bottom: 3rem;
}

.about-photo {
  width: 170px;
  height: auto;
  display: block;
  border-radius: 2px;
}

.about-bio h1 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.7rem;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 0.9rem;
  color: var(--accent);
}

.about-bio p {
  color: var(--text);
  margin-bottom: 1.1rem;
}

.about-bio p:last-child {
  margin-bottom: 0;
}

.about-bio a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
}

.about-bio a:hover {
  color: var(--text);
  border-color: var(--text);
}

.social-links {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.4rem;
}

.social-links a {
  font-size: 0.65rem;
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
}

.social-links a:hover {
  color: var(--text);
  border-color: var(--text);
}

/* ── Writing page ────────────────────────────── */

.writing-section {
  margin-bottom: 3.2rem;
}

.writing-section h2 {
  font-family: 'Inter', sans-serif;
  font-size: 0.65rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.writing-list {
  list-style: none;
}

.writing-list li {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 1.05rem;
  line-height: 1.45;
}

.writing-list li:last-child {
  border-bottom: none;
}

.writing-list a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 400;
}

.writing-list a:hover {
  color: var(--text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.writing-list .pub-meta {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.2rem;
}

.lang-note {
  font-size: 0.7rem;
  color: var(--muted);
  font-style: italic;
  margin-left: 0.3rem;
}

/* ── Blog page ───────────────────────────────── */

.blog-content {
  max-width: 560px;
}

.daftar-logo {
  width: 160px;
  height: auto;
  border-radius: 0;
}

.blog-content h1 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.6rem;
  font-weight: 500;
  margin-bottom: 1.2rem;
}

.blog-content p {
  color: var(--text);
  margin-bottom: 1.1rem;
}

.blog-link {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
}

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

/* ── Research page ───────────────────────────── */

.research-section {
  margin-bottom: 3.2rem;
}

.research-label {
  font-family: 'Inter', sans-serif;
  font-size: 0.65rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.research-title {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 1.4rem;
  color: var(--accent);
}

.research-body p {
  margin-bottom: 1.1rem;
  color: var(--text);
}

.research-body p:last-child {
  margin-bottom: 0;
}

.research-body a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

.research-body a:hover {
  color: var(--text);
  border-color: var(--text);
}

.chapter-list {
  display: grid;
  gap: 1.6rem;
}

.chapter-list dt {
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.chapter-list dd {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.65;
  border-left: 2px solid var(--border);
  padding-left: 0.9rem;
  margin-left: 0;
}

/* ── Research image strip ────────────────────── */

.research-images {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  margin-bottom: 3.2rem;
}

.research-images img {
  width: 100%;
  height: 155px;
  object-fit: cover;
  display: block;
  border-radius: 2px;
}

/* ── Writing page two-column layout ──────────── */

.writing-layout {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 0 2.5rem;
  align-items: stretch;
}

.writing-images-col {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.writing-images-col img {
  width: 170px;
  height: 150px;
  object-fit: cover;
  display: block;
  border-radius: 2px;
}

/* ── PDF links (writing page) ────────────────── */

.pub-links {
  margin-top: 0.25rem;
}

.pdf-link {
  font-family: 'Inter', sans-serif;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
}

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

.pdf-unavailable {
  font-family: 'Inter', sans-serif;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--border);
  cursor: default;
  user-select: none;
}

/* ── Footer ──────────────────────────────────── */

footer {
  margin-top: 5rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  font-size: 0.7rem;
  color: var(--muted);
}

/* ── Responsive ──────────────────────────────── */

@media (max-width: 580px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-photo {
    width: 140px;
    order: -1;
  }

  nav {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .writing-layout {
    grid-template-columns: 1fr;
  }

  .writing-images-col {
    flex-direction: row;
    justify-content: flex-start;
    overflow-x: auto;
    gap: 0.4rem;
    margin-bottom: 2rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .writing-images-col::-webkit-scrollbar {
    display: none;
  }

  .writing-images-col img {
    width: 140px;
    height: 100px;
    flex-shrink: 0;
  }
}