/* =============================================================================
   Custom CSS — Kunanon Burathep Academic Homepage
   ============================================================================= */

:root {
  --accent: #2563eb;
  --accent-light: #dbeafe;
  --accent-dark: #1e40af;
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --bg-primary: #ffffff;
  --bg-secondary: #f7f8fa;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --border-light: #edf2f7;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --radius: 8px;
  --radius-lg: 12px;
  --link-color: var(--accent);
}

/* ---------- Base ---------- */

body, p, li, a {
  line-height: 1.7;
  color: var(--text-primary);
}

body {
  background: var(--bg-secondary) !important;
}

.container {
  max-width: 800px;
}

h1 { font-size: 1.8rem; margin-top: 0; }
h2 { font-size: 1.35rem; color: var(--text-primary); border-bottom: 2px solid var(--accent); padding-bottom: 0.3em; margin-top: 2em; }
h3 { font-size: 1.1rem; color: var(--text-secondary); }

hr {
  border: none;
  height: 1px;
  background: var(--border);
  width: 100%;
  margin: 1.5em 0;
}

ul {
  list-style-type: disc;
  padding-left: 20px;
}

/* ---------- Links ---------- */

a:not(header a):not(nav a):not(.nav a):not(.profile-link a) {
  font-weight: 600 !important;
  text-decoration: none !important;
  color: var(--accent);
  border-bottom: 1.5px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
a:not(header a):not(nav a):not(.nav a):not(.profile-link a):hover {
  border-bottom-color: var(--accent);
  color: var(--accent-dark);
}

/* ---------- Header / Nav ---------- */

header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border) !important;
  padding: 0.8em 0 !important;
}

header a, nav a, .nav a {
  font-weight: 500 !important;
  text-decoration: none !important;
  color: var(--text-secondary) !important;
  transition: color 0.2s;
}
nav a:hover {
  color: var(--accent) !important;
}
nav a {
  padding: 0.25em 0.5em;
  border-radius: 4px;
}

/* ---------- Main content area ---------- */

.mainmatter {
  background: var(--bg-primary);
}

article.page {
  padding: 1em 0 2em;
}

/* ---------- Hero / Profile Section ---------- */

.profile-section {
  display: flex;
  align-items: flex-start;
  gap: 2em;
  margin-bottom: 1em;
}

.profile-photo {
  width: 160px;
  min-width: 160px;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}

.profile-info h1 {
  margin: 0 0 0.1em;
  font-size: 1.9rem;
}

.profile-info .pronunciation {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.3em;
}

.profile-info .affiliation {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 0.8em;
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em 1.2em;
  margin-top: 0.5em;
}

.profile-links a {
  color: var(--text-muted) !important;
  font-weight: 500 !important;
  text-decoration: none !important;
  font-size: 0.9rem;
  border-bottom: none !important;
  transition: color 0.2s;
}
.profile-links a:hover {
  color: var(--accent) !important;
}

/* ---------- Section Cards ---------- */

.section-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.2em 1.5em;
  margin-bottom: 1.2em;
  box-shadow: var(--shadow-sm);
}

/* ---------- News ---------- */

.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.news-item {
  display: flex;
  gap: 1em;
  padding: 0.6em 0;
  border-bottom: 1px solid var(--border-light);
  align-items: baseline;
}

.news-item:last-child {
  border-bottom: none;
}

.news-date {
  color: var(--text-muted);
  font-size: 0.85rem;
  white-space: nowrap;
  min-width: 90px;
  font-variant-numeric: tabular-nums;
}

.news-text {
  font-size: 0.95rem;
}

/* ---------- Publications ---------- */

.pub-item {
  padding: 1em 0;
  border-bottom: 1px solid var(--border-light);
}

.pub-item:last-child {
  border-bottom: none;
}

.pub-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 0.2em;
}

.pub-authors {
  color: var(--text-secondary);
  font-size: 0.93rem;
  margin-bottom: 0.2em;
}

.pub-venue {
  color: var(--text-muted);
  font-size: 0.88rem;
  font-style: italic;
  margin-bottom: 0.4em;
}

.pub-links {
  display: flex;
  gap: 0.8em;
  flex-wrap: wrap;
}

.pub-links a {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600 !important;
  color: var(--accent) !important;
  border: 1.5px solid var(--accent);
  border-radius: 4px;
  padding: 0.15em 0.6em;
  text-decoration: none !important;
  transition: background 0.2s, color 0.2s;
}
.pub-links a:hover {
  background: var(--accent);
  color: #fff !important;
}

/* ---------- Venue badge ---------- */

.venue-badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.15em 0.5em;
  border-radius: 4px;
  margin-right: 0.5em;
  vertical-align: middle;
  letter-spacing: 0.02em;
}

/* ---------- Education ---------- */

.edu-item {
  padding: 0.7em 0;
  border-bottom: 1px solid var(--border-light);
}
.edu-item:last-child {
  border-bottom: none;
}

.edu-degree {
  font-weight: 600;
  font-size: 1rem;
}

.edu-institution {
  color: var(--text-secondary);
  font-size: 0.93rem;
}

.edu-period {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.edu-supervisors {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 0.2em;
}

/* ---------- Teaching ---------- */

.teach-item {
  padding: 0.7em 0;
  border-bottom: 1px solid var(--border-light);
}
.teach-item:last-child {
  border-bottom: none;
}

.teach-role {
  font-weight: 600;
}

.teach-meta {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.teach-courses {
  margin: 0.3em 0 0 1.2em;
  padding: 0;
  font-size: 0.93rem;
}

/* ---------- Talks ---------- */

.talk-item {
  padding: 0.6em 0;
  border-bottom: 1px solid var(--border-light);
}
.talk-item:last-child {
  border-bottom: none;
}

.talk-type {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* ---------- Research Interests Tags ---------- */

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  margin: 0.8em 0;
  padding: 0;
  list-style: none;
}

.research-tag {
  background: var(--accent-light);
  color: var(--accent-dark);
  padding: 0.3em 0.8em;
  border-radius: 20px;
  font-size: 0.88rem;
  font-weight: 500;
}

/* ---------- Contact Info ---------- */

.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em 2em;
  font-size: 0.93rem;
}

/* ---------- Photo Gallery (Offtopic) ---------- */

.photo-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1em;
  margin: 1em 0;
}

.photo-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: var(--bg-card);
}

.photo-card img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s;
}
.photo-card:hover img {
  transform: scale(1.03);
}

.photo-card .caption {
  padding: 0.5em 0.8em;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  font-style: italic;
}

/* ---------- Hobby Cards (Offtopic) ---------- */

.hobby-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1em;
  margin: 1em 0;
}

.hobby-card {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 1em 1.2em;
  border: 1px solid var(--border-light);
}

.hobby-card h4 {
  margin: 0 0 0.3em;
  font-size: 1rem;
  color: var(--text-primary);
}

.hobby-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ---------- Footer ---------- */

footer {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 1em 0;
  border-top: 1px solid var(--border-light);
}

footer h5, footer h6 {
  color: var(--text-muted);
  font-weight: 400;
}

/* ---------- Table cleanup ---------- */

table { border-collapse: collapse; width: 100%; border: none; }
td { border: none; padding: 10px; vertical-align: top; text-align: center; }

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  .profile-section {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .profile-photo {
    width: 130px;
    min-width: 130px;
  }

  .profile-links {
    justify-content: center;
  }

  .hobby-grid {
    grid-template-columns: 1fr;
  }

  .photo-gallery {
    grid-template-columns: 1fr;
  }

  .news-item {
    flex-direction: column;
    gap: 0.2em;
  }

  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.2rem; }
}