/* ============================================
   GLOBAL STYLES
   ============================================ */

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


:root {
  --bg: #f6f9fc;
  --text: #1a2330;
  --muted: #56697a;
  --accent: #4a7fa5;
  --accent-light: #e4eff7;
  --accent-dark: #2f5f80;
  --border: #7aaac8;
  --card-bg: #edf4f9;
  --max-width: 980px;
}

html.dark {
  --bg: #0e1621;
  --text: #dde6ee;
  --muted: #8fa8be;
  --accent: #6ba3c8;
  --accent-light: #19283a;
  --accent-dark: #8cc0e0;
  --border: #2a4056;
  --card-bg: #162130;
  background-color: #0e1621;
}

html.dark .toc-term {
  color: #b0c8dc;
}

html.dark .toc-course {
  color: #8cc0e0;
}

html.dark .toc-link:hover,
html.dark .toc-link.toc-active {
  background: #1f3a52;
}

html.dark .toc-link.toc-active .toc-term,
html.dark .toc-link:hover .toc-term {
  color: #c8dfee;
}

html.dark .teaching-toc {
  border-color: #2e4d68;
}

html.dark .toc-quotes-link {
  border-color: #2e4d68;
  background: #192d40;
  color: #8cc0e0; /* lighter in dark mode for contrast on dark bg */
}

html {
  scroll-behavior: smooth;
}

/* Dot grid — home page only */
body:not(.teaching-page)::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Lato', sans-serif;
  font-size: 16px;
  line-height: 1.8;
  opacity: 0;
  animation: fadeIn 0.25s ease 0.05s forwards;
  transition: background-color 0.25s, color 0.25s;
}

a {
  color: var(--accent-dark);
  text-decoration: none;
  font-weight: 700;
}

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

h1, h2, h3, h4 {
  font-family: 'Lora', serif;
  font-weight: 600;
  line-height: 1.3;
}

/* ============================================
   NAV
   ============================================ */

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

nav .nav-name {
  font-family: 'Nunito', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.01em;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}

nav ul li a {
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 400;
}

nav ul li a:hover,
nav ul li a.active {
  color: var(--accent-dark);
  text-decoration: none;
}

/* ============================================
   PAGE WRAPPER
   ============================================ */

.page-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3.5rem 2.5rem;
  position: relative;
  z-index: 1;
}


/* ============================================
   TWO-COLUMN LAYOUT (index)
   ============================================ */

.two-col {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 3.5rem;
  align-items: start;
}

/* ============================================
   HERO / BIO
   ============================================ */

.hero {
  margin-bottom: 3rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 390px;
  gap: 3rem;
  align-items: start;
}

.hero-photo {
  width: 100%;
  height: auto;
  border-radius: 6px;
  display: block;
  border: 3px solid #000;
}

.hero-photo-placeholder {
  width: 210px;
  height: 210px;
  border-radius: 50%;
  background: var(--accent-light);
  border: 3px solid var(--border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.75rem;
  text-align: center;
}

.hero-text h1 {
  font-family: 'Nunito', sans-serif;
  font-size: 1.8rem;
  margin-bottom: 0.2rem;
  color: var(--text);
}

.hero-text .position {
  color: var(--muted);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.hero-text .institution {
  color: var(--accent-dark);
  font-style: normal;
}

.hero-text p {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.hero-links {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 1.1rem;
}

.hero-links a {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid var(--accent);
  padding: 0.3rem 0.85rem;
  border-radius: 20px;
  color: var(--accent-dark);
  font-family: 'Lato', sans-serif;
  transition: background 0.15s, color 0.15s;
}

.hero-links a:hover {
  background: var(--accent);
  color: white;
  text-decoration: none;
}

/* ============================================
   SECTIONS
   ============================================ */

section {
  margin-bottom: 3rem;
}

.section-heading {
  font-family: 'Nunito', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent-light);
  position: relative;
}

.section-heading::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--accent);
}

section p {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

section ul {
  list-style: disc;
  padding-left: 2.5rem;
  margin-top: 0.4rem;
}

section ul li {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 0.4rem;
  line-height: 1.7;
}

/* ============================================
   RESEARCH INTERESTS
   ============================================ */

.research-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.keyword-tag {
  background: var(--accent-light);
  border: 1px solid var(--border);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.78rem;
  color: var(--accent-dark);
}

/* ============================================
   SIDEBAR
   ============================================ */

.sidebar {
  position: sticky;
  top: 76px;
}

.sidebar-card {
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.4rem;
  margin-bottom: 1.25rem;
}

.sidebar-card h3 {
  font-family: 'Lora', serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.9rem;
  color: var(--accent);
}

.contact-list {
  list-style: none;
  font-size: 0.83rem;
}

.contact-list li {
  margin-bottom: 0.55rem;
  color: var(--muted);
  line-height: 1.5;
}

.contact-list li span {
  font-weight: 700;
  color: var(--text);
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   NEWS LIST
   ============================================ */

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.news-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1rem;
  font-size: 0.9rem;
}

.news-date {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  padding-top: 0.1rem;
  white-space: nowrap;
}

.news-text {
  color: var(--muted);
}

/* ============================================
   CV PAGE
   ============================================ */

.cv-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--accent-light);
}

.cv-header h1 {
  font-size: 1.9rem;
  margin-bottom: 0.2rem;
}

.cv-header p {
  color: var(--muted);
  font-style: italic;
  font-size: 0.9rem;
}

.cv-download {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid var(--accent);
  padding: 0.4rem 1.1rem;
  border-radius: 20px;
  color: var(--accent);
  font-family: 'Lato', sans-serif;
  transition: background 0.15s, color 0.15s;
}

.cv-download:hover {
  background: var(--accent);
  color: white;
  text-decoration: none;
}

.cv-section {
  margin-bottom: 2.5rem;
}

.cv-entry {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.cv-year {
  color: var(--muted);
  font-size: 0.8rem;
  padding-top: 0.15rem;
}

.cv-entry h3 {
  font-size: 0.95rem;
  margin-bottom: 0.15rem;
}

.cv-entry p {
  font-size: 0.83rem;
  color: var(--muted);
  margin-bottom: 0.1rem;
}

/* ============================================
   TEACHING SIDEBAR
   ============================================ */

.toc-wrapper {
  position: fixed;
  left: 2rem;
  top: 80px;
  width: 220px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 3.5rem;
  z-index: 50;
}

/* Center content on wide screens; shift right only enough to clear the sidebar */
body.teaching-page .page-wrapper {
  margin-left: max(calc(2rem + 220px + 2rem), calc(50vw - 475px));
  margin-right: auto;
  max-width: 950px;
}

@media (max-width: 1150px) {
  .toc-wrapper { display: none; }
  body.teaching-page .page-wrapper {
    margin-left: auto;
    margin-right: auto;
  }
}

.teaching-toc {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem 1rem;
}

.toc-section-title {
  display: block;
  font-family: 'Lora', serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.01em;
  text-transform: none;
  margin-bottom: 0.65rem;
}

.toc-quotes-link {
  display: block;
  padding: 0.55rem 0.75rem;
  background: var(--accent-light);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  color: var(--accent-dark);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  text-decoration: none;
  text-align: left;
  line-height: 1.4;
  transition: background 0.15s;
}

.toc-quotes-link:hover {
  background: var(--border);
  text-decoration: none;
}

.toc-group {
  margin-bottom: 1rem;
}

.toc-group:last-child {
  margin-bottom: 0;
}

.toc-school {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent-dark);
  margin-bottom: 0.45rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border);
}

.teaching-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.teaching-toc li {
  margin-bottom: 0.05rem;
}

.toc-link {
  display: flex;
  flex-direction: column;
  padding: 0.25rem 0.4rem;
  border-radius: 5px;
  text-decoration: none;
  transition: background 0.15s;
}

.toc-link:hover,
.toc-link.toc-active {
  background: var(--accent-light);
  text-decoration: none;
}

.toc-term {
  font-family: 'Nunito', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  line-height: 1.3;
}

.toc-course {
  font-size: 0.78rem;
  color: var(--accent-dark);
  line-height: 1.3;
}

.toc-link:hover .toc-term,
.toc-link.toc-active .toc-term {
  color: var(--accent-dark);
}

/* ============================================
   TEACHING PAGE
   ============================================ */

.teaching-intro {
  margin-bottom: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.teaching-intro p {
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.85;
  margin-bottom: 0.9rem;
}

.teaching-intro p:last-child {
  margin-bottom: 0;
}

.term-block {
  margin-bottom: 2.75rem;
}

.term-label {
  font-family: 'Nunito', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-dark);
  margin-bottom: 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border);
  letter-spacing: 0.02em;
}

.course-card {
  background: var(--card-bg);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem 1.6rem;
  margin-bottom: 1rem;
}

.course-card h4 {
  font-family: 'Nunito', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
  color: var(--text);
}

.course-meta {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
  font-style: italic;
}

.course-card > p {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 0.9rem;
}

.course-resp {
  font-size: 0.95rem;
  color: var(--text);
  margin-top: 0.5rem;
  margin-bottom: 0.75rem;
}

.course-resp::before {
  content: 'Responsibilities';
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-dark);
  margin-bottom: 0.25rem;
}

.course-reviews {
  border-top: 1px solid var(--border);
  padding-top: 0.85rem;
  margin-top: 0.5rem;
}

.review-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-dark);
  margin-bottom: 0.6rem;
  font-weight: 700;
}

.review-scores {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.review-score {
  font-size: 0.85rem;
  color: var(--muted);
}

.review-score strong {
  color: var(--accent-dark);
}

/* ============================================
   RESPONSIBILITIES LIST
   ============================================ */

.responsibilities {
  list-style: disc;
  padding-left: 1.25rem;
  margin-bottom: 0.9rem;
  color: var(--muted);
  font-size: 1rem;
}

.responsibilities li {
  margin-bottom: 0.3rem;
}

/* ============================================
   COLLAPSIBLE EVALUATIONS
   ============================================ */

details.eval-details {
  margin-top: 0.75rem;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}

details.eval-details summary {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-dark);
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

details.eval-details summary::-webkit-details-marker { display: none; }

details.eval-details summary::after {
  content: '▸';
  font-size: 0.7rem;
  transition: transform 0.2s;
}

details.eval-details[open] summary::after {
  transform: rotate(90deg);
}

/* ============================================
   COURSE DESCRIPTION ARROW TOGGLE
   ============================================ */

details.course-desc-details {
  margin-bottom: 0.3rem;
}

details.course-desc-details summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  user-select: none;
}

details.course-desc-details summary::-webkit-details-marker { display: none; }

details.course-desc-details summary h4 {
  margin: 0;
}

details.course-desc-details summary::after {
  content: '▸';
  font-size: 0.85rem;
  color: var(--accent);
  transition: transform 0.2s;
  flex-shrink: 0;
}

details.course-desc-details[open] summary::after {
  transform: rotate(90deg);
}

.course-desc-text {
  font-size: 0.95rem;
  color: var(--muted);
  padding-top: 0.5rem;
  padding-bottom: 0.85rem;
  margin-bottom: 0.65rem;
  border-bottom: 1px solid var(--border);
  line-height: 1.7;
}

.eval-scale {
  margin-left: auto;
  font-weight: 400;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: none;
  color: var(--muted);
}

.eval-scale-note {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.6rem;
  font-style: italic;
  text-align: right;
}

/* ============================================
   EVALUATION TABLE
   ============================================ */

.eval-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

.eval-table th {
  text-align: left;
  padding: 0.4rem 0.75rem;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.eval-table th:not(:first-child) {
  text-align: center;
}

.eval-table td {
  padding: 0.4rem 0.75rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.eval-table td:not(:first-child) {
  text-align: center;
  font-weight: 700;
  color: var(--accent-dark);
}

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

.eval-table tr:nth-child(even) td {
  background: var(--bg);
}

/* ============================================
   RANDOM QUOTE SECTION
   ============================================ */

.quote-section {
  margin-top: 3.5rem;
  padding: 2.5rem;
  background: var(--accent-light);
  border-radius: 16px;
  border: 2px solid var(--border);
  min-height: 350px;
  display: flex;
  flex-direction: column;
}

.quote-section-title {
  font-family: 'Nunito', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text);
  text-align: left;
  flex-shrink: 0;
}

.quote-section blockquote {
  font-family: 'Nunito', sans-serif;
  font-size: 1.15rem;
  font-style: italic;
  color: var(--text);
  line-height: 1.8;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.quote-source {
  display: block;
  margin-top: 0.65rem;
  font-size: 0.95rem;
  font-style: normal;
  color: var(--muted);
  font-family: 'Lato', sans-serif;
}

.quote-btn {
  background: #2f5f80;
  color: white;
  border: none;
  padding: 0.65rem 1.75rem;
  margin-top: 1.5rem;
  align-self: center;
  font-family: 'Lato', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 20px;
  cursor: pointer;
  transition: background 0.2s;
}

.quote-btn:hover {
  background: #1e4a63;
}

/* ============================================
   DARK MODE TOGGLE
   ============================================ */

.dark-toggle {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  z-index: 200;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}

.dark-toggle:hover {
  background: var(--accent-light);
  border-color: var(--accent);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 2.5rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 4rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 740px) {
  .hero-inner {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    text-align: center;
  }

  .hero-photo {
    min-height: 280px;
    width: 100%;
  }

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

  .cv-entry {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .news-item {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }

  nav .nav-name {
    display: none;
  }

  nav {
    justify-content: center;
  }

  nav ul {
    width: 100%;
    justify-content: center;
  }

  .quote-section {
    padding: 1.5rem 1rem;
  }

  .teaching-page h1 {
    text-align: center;
  }
}

/* ============================================
   MOBILE TOC (teaching page, shown < 1150px)
   ============================================ */

.mobile-toc {
  display: none;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  margin-bottom: 2.5rem;
  padding: 1rem 1.1rem;
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: 10px;
}

.mobile-toc-label {
  width: 100%;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.mobile-toc a {
  display: inline-block;
  padding: 0.22rem 0.65rem;
  background: white;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.78rem;
  color: var(--accent-dark);
  text-decoration: none;
  transition: background 0.15s;
}

.mobile-toc a:hover {
  background: var(--accent-light);
  text-decoration: none;
}

@media (max-width: 1150px) {
  .mobile-toc { display: flex; }
}