/* ===========================
   Al-Folio Theme - Main CSS
   =========================== */

:root {
  --global-bg-color: #ffffff;
  --global-code-bg-color: #f8f9fa;
  --global-text-color: #2c3e50;
  --global-text-color-light: #6c757d;
  --global-theme-color: #0075ff;
  --global-hover-color: #0057bb;
  --global-hover-text-color: #ffffff;
  --global-footer-bg-color: #f8f9fa;
  --global-footer-text-color: #6c757d;
  --global-distill-app-color: #6c6c6c;
  --global-divider-color: rgba(0,0,0,.1);
  --global-card-bg-color: #ffffff;
  --global-badge-color: #adb5bd;
  --global-theme-tint: rgba(0,117,255,0.07);
  color-scheme: light;
}

:root[data-theme="light"] {
  color-scheme: light;
}

:root[data-theme="dark"] {
  --global-bg-color: #0f141c;
  --global-code-bg-color: #1b2430;
  --global-text-color: #e6edf5;
  --global-text-color-light: #b5c0ce;
  --global-theme-color: #7aa2ff;
  --global-hover-color: #9bb8ff;
  --global-hover-text-color: #0f141c;
  --global-footer-bg-color: #131c27;
  --global-footer-text-color: #b5c0ce;
  --global-distill-app-color: #b5c0ce;
  --global-divider-color: rgba(255,255,255,0.14);
  --global-card-bg-color: #121a25;
  --global-badge-color: #8ea1b5;
  --global-theme-tint: rgba(122,162,255,0.16);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --global-bg-color: #0f141c;
    --global-code-bg-color: #1b2430;
    --global-text-color: #e6edf5;
    --global-text-color-light: #b5c0ce;
    --global-theme-color: #7aa2ff;
    --global-hover-color: #9bb8ff;
    --global-hover-text-color: #0f141c;
    --global-footer-bg-color: #131c27;
    --global-footer-text-color: #b5c0ce;
    --global-distill-app-color: #b5c0ce;
    --global-divider-color: rgba(255,255,255,0.14);
    --global-card-bg-color: #121a25;
    --global-badge-color: #8ea1b5;
    --global-theme-tint: rgba(122,162,255,0.16);
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

html {
  font-size: 125%;
  scroll-behavior: smooth;
}

body {
  font-family: "Source Sans Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  font-size: 1rem;
  color: var(--global-text-color);
  background-color: var(--global-bg-color);
  margin: 0;
  padding: 0;
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---- Navbar ---- */
.navbar {
  background-color: var(--global-bg-color);
  border-bottom: 1px solid var(--global-divider-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0.5rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.navbar-brand {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--global-text-color) !important;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.navbar-brand:hover {
  color: var(--global-theme-color) !important;
}

.navbar-nav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem;
  margin: 0;
  padding: 0;
  align-items: center;
}

.navbar-nav li a {
  color: var(--global-text-color);
  text-decoration: none;
  padding: 0.4rem 0.85rem;
  border-radius: 4px;
  font-size: 0.95rem;
  transition: background 0.15s, color 0.15s;
  display: block;
}

.navbar-nav li a:hover,
.navbar-nav li a.active {
  color: var(--global-theme-color);
  background-color: var(--global-theme-tint);
}

.navbar-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.menu-toggle {
  border: 1px solid var(--global-divider-color);
  background: var(--global-code-bg-color);
  color: var(--global-text-color);
  width: 36px;
  height: 36px;
  border-radius: 999px;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}

.menu-toggle:hover {
  background: var(--global-theme-tint);
  border-color: var(--global-theme-color);
  color: var(--global-theme-color);
}

.menu-toggle:focus-visible {
  outline: 2px solid var(--global-theme-color);
  outline-offset: 2px;
}

.theme-toggle {
  border: 1px solid var(--global-divider-color);
  background: var(--global-code-bg-color);
  color: var(--global-text-color);
  width: 36px;
  height: 36px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}

.theme-toggle:hover {
  background: var(--global-theme-tint);
  border-color: var(--global-theme-color);
  color: var(--global-theme-color);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--global-theme-color);
  outline-offset: 2px;
}

/* ---- Main Content ---- */
.page-content {
  max-width: 960px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  flex: 1 0 auto;
}

/* ---- Profile / About Layout ---- */
.about-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  align-items: start;
}

.profile-column {
  text-align: center;
}

.profile-column img {
  width: 180px;
  height: 180px;
  object-fit: cover;
  object-position: center 2%;
  border-radius: 50%;
  border: 3px solid var(--global-divider-color);
  margin-bottom: 1rem;
}

.profile-column h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0.3rem 0 0.2rem;
  color: var(--global-text-color);
}

.profile-column .affiliation {
  font-size: 0.85rem;
  color: var(--global-text-color-light);
  margin: 0 0 1rem;
  line-height: 1.4;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: flex-start;
  margin-top: 0.8rem;
}

.social-links a {
  color: var(--global-text-color-light);
  text-decoration: none;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.15s;
}

.social-links a:hover {
  color: var(--global-theme-color);
}

.social-links .icon {
  width: 16px;
  text-align: center;
  font-size: 0.9rem;
}

.bio-column h1 {
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--global-text-color);
}

.bio-column p {
  font-size: 0.98rem;
  margin-bottom: 0.9rem;
  color: var(--global-text-color);
}

.bio-column a {
  color: var(--global-theme-color);
  text-decoration: none;
}

.bio-column a:hover {
  color: var(--global-hover-color);
  text-decoration: underline;
}

/* ---- News Section ---- */
.news-section {
  margin-top: 2.5rem;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  border-bottom: 2px solid var(--global-divider-color);
  padding-bottom: 0.5rem;
  margin-bottom: 1.2rem;
  color: var(--global-text-color);
}

.news-table {
  width: 100%;
  border-collapse: collapse;
}

.news-table tr td {
  padding: 0.45rem 0.6rem;
  vertical-align: top;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--global-divider-color);
}

.news-table tr td:first-child {
  white-space: nowrap;
  color: var(--global-text-color-light);
  font-weight: 500;
  width: 100px;
}

.news-table tr:last-child td {
  border-bottom: none;
}

/* ---- Page Headings ---- */
.page-header {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--global-divider-color);
}

/* ---- CV Page ---- */
.cv-section {
  margin-bottom: 2.2rem;
}

.cv-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--global-text-color);
  border-bottom: 1px solid var(--global-divider-color);
  padding-bottom: 0.4rem;
  margin-bottom: 1rem;
}

.cv-entry {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.1rem;
}

.cv-entry-left {
  flex: 1;
}

.cv-entry-left strong {
  display: block;
  font-size: 0.97rem;
}

.cv-entry-left em {
  font-size: 0.9rem;
  color: var(--global-text-color-light);
}

.cv-entry-left .cv-detail {
  display: block;
  font-size: 0.88rem;
  color: var(--global-text-color-light);
  margin-top: 0.2rem;
}

.cv-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-top: 0.2rem;
}

.cv-detail-row .cv-detail {
  margin-top: 0;
  flex: 1;
}

.cv-detail-year {
  font-size: 0.88rem;
  color: var(--global-text-color-light);
  text-align: right;
  min-width: 130px;
  white-space: nowrap;
}

.cv-entry-right {
  font-size: 0.88rem;
  color: var(--global-text-color-light);
  text-align: right;
  min-width: 130px;
  padding-left: 1rem;
  white-space: nowrap;
}

.cv-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--global-theme-color);
  color: white !important;
  padding: 0.5rem 1.1rem;
  border-radius: 5px;
  text-decoration: none !important;
  font-size: 0.9rem;
  margin-bottom: 2rem;
  transition: background-color 0.15s;
}

.cv-download-btn:hover {
  background-color: var(--global-hover-color);
}

/* ---- Research Page ---- */
.research-card {
  background: var(--global-card-bg-color);
  border: 1px solid var(--global-divider-color);
  border-radius: 8px;
  padding: 1.4rem 1.5rem;
  margin-bottom: 1.2rem;
  transition: box-shadow 0.2s;
}

.research-card:hover {
  box-shadow: 0 3px 14px rgba(0,0,0,0.08);
}

.research-card h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.6rem;
  color: var(--global-text-color);
}

.research-card p {
  font-size: 0.92rem;
  color: var(--global-text-color);
  margin: 0;
  line-height: 1.6;
}

.research-interests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
  margin-top: 0.5rem;
}

/* ---- Publications Page ---- */
.pub-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pub-item {
  display: flex;
  gap: 1.2rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--global-divider-color);
  align-items: flex-start;
}

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

.pub-year-badge {
  min-width: 52px;
  background: var(--global-theme-color);
  color: white;
  border-radius: 4px;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.25rem 0.4rem;
  line-height: 1.2;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.pub-year-badge.ongoing {
  background: #6c757d;
}

.pub-content .pub-title {
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--global-text-color);
  margin: 0 0 0.25rem;
}

.pub-content .pub-authors {
  font-size: 0.88rem;
  color: var(--global-text-color-light);
  margin: 0 0 0.25rem;
}

.pub-content .pub-venue {
  font-size: 0.88rem;
  color: var(--global-text-color-light);
  font-style: italic;
  margin: 0 0 0.4rem;
}

.pub-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.pub-badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.15s;
}

.pub-badge:hover {
  opacity: 0.8;
  text-decoration: none;
}

.pub-badge.preprint {
  background: #fff3cd;
  color: #856404;
  border: 1px solid #ffc107;
}

.pub-badge.article {
  background: #d1e7dd;
  color: #0f5132;
  border: 1px solid #198754;
}

.pub-badge.revision {
  background: #cfe2ff;
  color: #084298;
  border: 1px solid #0d6efd;
}

.pub-me {
  font-weight: 700;
  color: var(--global-text-color);
}

/* ---- Teaching Page ---- */
.teaching-entry {
  margin-bottom: 1.8rem;
}

.teaching-entry .inst-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}

.teaching-entry .inst-name {
  font-weight: 700;
  font-size: 1rem;
}

.teaching-entry .inst-location {
  font-size: 0.88rem;
  color: var(--global-text-color-light);
  text-align: right;
}

.teaching-role-group {
  margin-bottom: 0.7rem;
  padding-left: 0.8rem;
  border-left: 3px solid var(--global-theme-color);
}

.teaching-role-group .role-title {
  font-style: italic;
  font-size: 0.9rem;
  color: var(--global-text-color-light);
  margin-bottom: 0.3rem;
}

.teaching-course-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  padding: 0.2rem 0;
}

.teaching-course-row .course-code {
  color: var(--global-text-color);
}

.teaching-course-row .course-term {
  color: var(--global-text-color-light);
  font-size: 0.85rem;
}

/* ---- Presentations Table ---- */
.presentations-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.presentations-table thead tr {
  background: var(--global-code-bg-color);
}

.presentations-table th {
  font-weight: 600;
  padding: 0.6rem 0.9rem;
  border-bottom: 2px solid var(--global-divider-color);
  text-align: left;
}

.presentations-table td {
  padding: 0.5rem 0.9rem;
  vertical-align: top;
  border-bottom: 1px solid var(--global-divider-color);
}

.presentations-table tr:last-child td {
  border-bottom: none;
}

.badge-type {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 600;
  background: #e9ecef;
  color: #495057;
}

.badge-type.invited { background: #d1e7dd; color: #0f5132; }
.badge-type.contributed { background: #cfe2ff; color: #084298; }
.badge-type.poster { background: #fff3cd; color: #856404; }
.badge-type.lightning { background: #f8d7da; color: #842029; }

/* ---- Awards List ---- */
.awards-list {
  list-style: none;
  padding: 0;
}

.awards-list li {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--global-divider-color);
  font-size: 0.92rem;
}

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

.award-text { flex: 1; }
.award-year {
  color: var(--global-text-color-light);
  min-width: 60px;
  text-align: right;
}

/* ---- Footer ---- */
footer {
  background: var(--global-footer-bg-color);
  border-top: 1px solid var(--global-divider-color);
  padding: 1.2rem 1.5rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--global-footer-text-color);
  margin-top: auto;
}

footer a {
  color: var(--global-text-color-light);
  text-decoration: none;
}

footer a:hover {
  color: var(--global-theme-color);
}

/* ---- Utility ---- */
a { color: var(--global-theme-color); }
a:hover { color: var(--global-hover-color); }

.tag-pill {
  display: inline-block;
  background: var(--global-theme-tint);
  color: var(--global-theme-color);
  border-radius: 20px;
  padding: 0.2rem 0.75rem;
  font-size: 0.8rem;
  margin: 0.15rem;
}

.intro-highlight {
  background: var(--global-code-bg-color);
  border-left: 4px solid var(--global-theme-color);
  padding: 1rem 1.2rem;
  border-radius: 0 6px 6px 0;
  margin-bottom: 1.5rem;
  font-size: 0.93rem;
}

/* ---- Responsive ---- */
@media (max-width: 720px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .profile-column {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .cv-entry {
    flex-direction: column;
  }

  .cv-entry-right {
    text-align: left;
    padding-left: 0;
    margin-top: 0.2rem;
  }

  .cv-detail-row {
    flex-direction: column;
    gap: 0.1rem;
  }

  .cv-detail-year {
    text-align: left;
    min-width: 0;
  }

  .page-content {
    padding: 2rem 1rem 3rem;
  }

  .navbar {
    flex-wrap: wrap;
    gap: 0.45rem;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .navbar-nav {
    display: none;
    width: 100%;
    order: 3;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    padding-top: 0.35rem;
  }

  .navbar.menu-open .navbar-nav {
    display: flex;
  }

  .navbar-nav li a {
    padding: 0.55rem 0.8rem;
  }

  .navbar-actions {
    margin-left: auto;
  }
}