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

:root {
  --c-dark:    #111827;
  --c-mid:     #1E3A5F;
  --c-action:  #1D4ED8;
  --c-teal:    #93C5FD;
  --c-pale:    #EFF6FF;
  --c-soft:    #F8F9FA;
  --c-page:    #ffffff;
  --c-card:    #F9FAFB;
  --c-text:    #111827;
  --c-text-2:  #4B5563;
  --c-text-3:  #9CA3AF;
  --c-border:  #E5E7EB;
  --font-head: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --radius:    8px;
  --shadow:    0 1px 8px rgba(0,0,0,.06);
  --shadow-lg: 0 4px 24px rgba(0,0,0,.1);
  --trans:     0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-page);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: background var(--trans), box-shadow var(--trans), padding var(--trans);
}

.navbar.scrolled {
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--c-border);
  padding: 14px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-page);
  transition: color var(--trans);
  letter-spacing: -0.01em;
}

.navbar.scrolled .nav-logo { color: var(--c-dark); }

.nav-links {
  display: flex;
  gap: 36px;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  transition: color var(--trans);
  letter-spacing: 0.02em;
}

.nav-link:hover { color: #fff; }
.navbar.scrolled .nav-link { color: var(--c-text-2); }
.navbar.scrolled .nav-link:hover { color: var(--c-dark); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: background var(--trans);
}

.navbar.scrolled .nav-toggle span { background: var(--c-dark); }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, #0B1320 0%, #111827 50%, #1E3A5F 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 75% 50%, rgba(37,99,235,0.2) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 10% 80%, rgba(6,13,26,0.5) 0%, transparent 60%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: 120px 24px 80px;
  max-width: 700px;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-teal);
  margin-bottom: 20px;
}

.hero-name {
  font-family: var(--font-head);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-fullname {
  font-size: 0.88rem;
  font-weight: 400;
  color: rgba(255,255,255,0.42);
  letter-spacing: 0.06em;
  margin-bottom: 22px;
  margin-top: -12px;
}

.hero-tagline {
  font-size: 1rem;
  font-weight: 500;
  color: var(--c-teal);
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  max-width: 520px;
  margin-bottom: 40px;
  line-height: 1.75;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--trans);
  cursor: pointer;
  border: 1.5px solid transparent;
}

.btn--primary {
  background: #fff;
  color: var(--c-dark);
  border-color: #fff;
}

.btn--primary:hover {
  background: var(--c-pale);
  border-color: var(--c-pale);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}

.btn--outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.08);
  transform: translateY(-1px);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scroll-dot {
  animation: scrollBob 1.6s ease-in-out infinite;
}

@keyframes scrollBob {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(6px); }
}

/* ── Sections ── */
.section {
  padding: 100px 0;
}

.section--alt {
  background: var(--c-card);
}

.section--dark {
  background: var(--c-dark);
}

.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-action);
  margin-bottom: 12px;
}

.section-eyebrow.center { text-align: center; }

.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-dark);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-title.center { text-align: center; }
.section-title.light  { color: #fff; }

.section-intro {
  font-size: 1.05rem;
  color: var(--c-text-2);
  max-width: 560px;
  margin: 0 auto 56px;
  text-align: center;
  line-height: 1.75;
}

.section-intro.light { color: rgba(255,255,255,0.72); }

/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 80px;
  align-items: start;
}

.about-photo-wrap {
  position: sticky;
  top: 100px;
  display: flex;
  justify-content: center;
}

.about-photo-placeholder {
  width: 220px;
  height: 260px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow:
    0 0 0 4px var(--c-page),
    0 0 0 8px var(--c-action),
    0 12px 40px rgba(37,99,235,0.18);
  position: relative;
}

.about-photo-placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  border: 1.5px solid rgba(255,255,255,0.15);
  pointer-events: none;
}

.about-photo-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.about-text { padding-top: 8px; }

.about-body {
  font-size: 1.05rem;
  color: var(--c-text-2);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-body strong { color: var(--c-dark); font-weight: 600; }

.btn--resume {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--c-pale);
  color: var(--c-action);
  border: 1.5px solid var(--c-action);
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 40px;
  transition: all var(--trans);
}

.btn--resume:hover {
  background: var(--c-action);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37,99,235,0.25);
}

.about-stats {
  display: flex;
  gap: 32px;
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--c-border);
  flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; gap: 4px; }

.stat-num {
  font-family: var(--font-head);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--c-action);
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--c-text-3);
  max-width: 100px;
  line-height: 1.4;
}

/* ── Research grid ── */
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 0;
}

.research-card {
  background: var(--c-card);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px 24px 22px;
  text-align: left;
  cursor: pointer;
  transition: box-shadow var(--trans), transform var(--trans), border-color var(--trans), background var(--trans);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.research-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  border-color: var(--c-action);
}

.research-card.active {
  background: var(--c-pale);
  border-color: var(--c-action);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12), var(--shadow);
}

.research-card-num {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--c-text-3);
  margin-bottom: 12px;
}

.research-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 10px;
  line-height: 1.35;
}

.research-desc {
  font-size: 0.85rem;
  color: var(--c-text-2);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}

.research-card-cta {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--c-action);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
  opacity: 0;
  transition: opacity var(--trans);
}

.research-card:hover .research-card-cta,
.research-card.active .research-card-cta {
  opacity: 1;
}

.rc-arrow {
  display: inline-block;
  transition: transform var(--trans);
}

.research-card.active .rc-arrow {
  transform: rotate(90deg);
}

/* ── Research detail panel ── */
.research-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.55s ease, opacity 0.4s ease, margin-top 0.4s ease;
  margin-top: 0;
}

.research-panel.open {
  max-height: 2000px;
  opacity: 1;
  margin-top: 24px;
}

.rp-inner {
  background: var(--c-page);
  border: 1.5px solid var(--c-action);
  border-left: 5px solid var(--c-action);
  border-radius: var(--radius);
  padding: 40px 40px 36px;
  position: relative;
}

.rp-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--c-border);
  background: var(--c-page);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-text-2);
  transition: background var(--trans), border-color var(--trans), color var(--trans);
}

.rp-close:hover {
  background: var(--c-dark);
  border-color: var(--c-dark);
  color: #fff;
}

.rp-images {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.rp-img-main,
.rp-img-side {
  border-radius: 8px;
  overflow: hidden;
  background: var(--c-soft);
}

.rp-img-main { aspect-ratio: 16/9; }
.rp-img-side { aspect-ratio: 4/3; }

.rp-img-main img,
.rp-img-side img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.rp-title {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.rp-desc {
  font-size: 0.97rem;
  color: var(--c-text-2);
  line-height: 1.8;
  max-width: 760px;
  margin-bottom: 24px;
}

.rp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.rp-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 5px 14px;
  border-radius: 20px;
  background: var(--c-pale);
  color: var(--c-mid);
  border: 1px solid rgba(37,99,235,0.15);
}

@media (max-width: 900px) {
  .research-grid { grid-template-columns: repeat(2, 1fr); }
  .rp-images { grid-template-columns: 1fr; }
  .rp-img-side { display: none; }
  .rp-inner { padding: 28px 24px; }
}

@media (max-width: 640px) {
  .research-grid { grid-template-columns: 1fr; }
}

/* ── Generic toggle button ── */
.toggle-btn-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 0;
}

.toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  background: transparent;
  border: 1.5px solid var(--c-action);
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-action);
  cursor: pointer;
  transition: background var(--trans), color var(--trans), border-color var(--trans);
  margin-top: 0;
}

.toggle-btn:hover {
  background: var(--c-pale);
}

.toggle-btn.open {
  background: var(--c-action);
  color: #fff;
  border-color: var(--c-action);
}

.toggle-arrow {
  display: inline-block;
  transition: transform 0.28s ease;
  font-style: normal;
  line-height: 1;
}

.toggle-btn.open .toggle-arrow {
  transform: rotate(90deg);
}

/* ── Generic accordion panel ── */
.accordion-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.55s ease, opacity 0.4s ease, margin-top 0.35s ease;
  margin-top: 0;
}

.accordion-panel.expanded {
  max-height: 2000px;
  opacity: 1;
  margin-top: 20px;
}

.accordion-panel-inner {
  background: var(--c-page);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
}

/* ── Teaching ── */
.teaching-wrap {
  background: var(--c-page);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 36px;
}

.teaching-inst {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--c-border);
}

.teaching-badge {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: #1E1E1E;
  color: #E8C100;
  font-size: 0.7rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.teaching-inst > div {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.teaching-inst strong {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-dark);
}

.teaching-inst span {
  font-size: 0.82rem;
  color: var(--c-text-2);
}

.teaching-note {
  font-size: 0.9rem;
  color: var(--c-text-3);
  font-style: italic;
}

.teaching-desc {
  font-size: 0.9rem;
  color: var(--c-text-2);
  line-height: 1.75;
}

/* ── Courses table ── */
.courses-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.courses-table th {
  text-align: left;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-3);
  padding: 14px 20px;
  border-bottom: 1px solid var(--c-border);
}

.courses-table td {
  padding: 15px 20px;
  color: var(--c-text);
  vertical-align: middle;
}

.courses-table tbody tr:nth-child(even) {
  background: var(--c-soft);
}

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

.course-code {
  font-weight: 700;
  color: var(--c-mid);
  font-family: 'Menlo', 'Consolas', monospace;
  font-size: 0.82rem;
  white-space: nowrap;
}

.course-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  padding: 3px 10px;
  border-radius: 20px;
}

.course-badge--ug {
  background: #EFF6FF;
  color: #1E40AF;
}

.course-badge--ud {
  background: #F3E8FF;
  color: #6B21A8;
}

.course-badge--load {
  background: #FEF9C3;
  color: #854D0E;
}

.course-note {
  display: block;
  font-size: 0.8rem;
  color: var(--c-text-2);
  margin-top: 5px;
  line-height: 1.5;
  font-weight: 400;
}

/* ── Baltimore County projects ── */
.bmore-projects {
  display: flex;
  flex-direction: column;
}

.bmore-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-border);
  transition: background var(--trans);
}

.bmore-row:last-child { border-bottom: none; }
.bmore-row:hover { background: var(--c-soft); }

.bmore-row-content {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.bmore-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-dark);
}

.bmore-venue {
  font-size: 0.8rem;
  color: var(--c-text-2);
}

.status-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
}

.status-badge--ongoing {
  background: #ECFDF5;
  color: #065F46;
}

.status-badge--done {
  background: var(--c-pale);
  color: var(--c-mid);
}

/* ── Affiliations ── */
.section--affiliations { background: var(--c-card); }

.affiliations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 12px;
}

.affil-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--c-page);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--c-border);
  transition: box-shadow var(--trans), transform var(--trans);
}

.affil-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.affil-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #fff;
  flex-shrink: 0;
}

.affil--morgan .affil-icon  { background: #004B8D; }
.affil--towson .affil-icon  { background: #1E1E1E; color: #E8C100; }
.affil--bmore  .affil-icon  { background: #1A3A6B; }
.affil--vt     .affil-icon  { background: #861F41; }
.affil--stmarys .affil-icon { background: #1B3A6B; }

.affil-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.affil-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--c-dark);
  line-height: 1.3;
}

.affil-role {
  font-size: 0.78rem;
  color: var(--c-text-2);
  line-height: 1.45;
}

@media (max-width: 900px) {
  .affiliations-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .affiliations-grid { grid-template-columns: 1fr; }
}

/* ── Projects ── */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.project-card {
  background: var(--c-page);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow var(--trans), transform var(--trans);
  border: 1px solid var(--c-border);
}

.project-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.project-card-accent {
  height: 3px;
  background: var(--c-action);
}

.project-card-accent--edu    { background: #1D4ED8; }
.project-card-accent--volt   { background: #92400E; }
.project-card-accent--scholar { background: #065F46; }

.project-card-body { padding: 36px; }

.project-tag,
.project-tag--edu,
.project-tag--volt,
.project-tag--scholar {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-2);
  background: var(--c-soft);
  border: 1px solid var(--c-border);
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 14px;
}

.project-title {
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.project-desc {
  font-size: 0.95rem;
  color: var(--c-text-2);
  line-height: 1.75;
  margin-bottom: 20px;
}

.project-highlights {
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.project-highlights li {
  font-size: 0.875rem;
  color: var(--c-text-2);
  padding-left: 20px;
  position: relative;
}

.project-highlights li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-teal);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-action);
  transition: color var(--trans), gap var(--trans);
}

.project-link:hover { color: var(--c-dark); gap: 10px; }

.project-link--muted {
  color: var(--c-text-3);
  cursor: default;
}

.project-link--muted:hover { color: var(--c-text-3); gap: 6px; }

/* ── Publications ── */
.pub-list {
  display: flex;
  flex-direction: column;
}

.pub-entry {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--c-border);
  transition: background var(--trans);
}

.pub-entry:last-child { border-bottom: none; }
.pub-entry:hover { background: var(--c-soft); }

.pub-type {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 120px;
  text-align: center;
}

.pub-type--article  { background: #DBEAFE; color: #1D4ED8; }
.pub-type--conf     { background: #EDE9FE; color: #5B21B6; }
.pub-type--working  { background: #FEF3C7; color: #92400E; }

.pub-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.pub-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-dark);
}

.pub-venue {
  font-size: 0.8rem;
  color: var(--c-text-2);
}

.pub-view-btn {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1.5px solid var(--c-border);
  background: transparent;
  color: var(--c-text-3);
  cursor: not-allowed;
  white-space: nowrap;
  flex-shrink: 0;
  font-family: var(--font-body);
  position: relative;
}

/* ── Blog cards ── */
.blog-list {
  display: flex;
  flex-direction: column;
}

.blog-card {
  display: flex;
  gap: 20px;
  padding: 24px;
  border-bottom: 1px solid var(--c-border);
  transition: background var(--trans);
}

.blog-card:last-child { border-bottom: none; }
.blog-card:hover { background: var(--c-soft); }

.blog-card--link {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  border-radius: var(--radius);
}
.blog-card--link:hover { background: var(--c-soft); }
.blog-card--link:hover .blog-card-title { color: var(--c-action); }

.blog-read-more {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--c-action);
  letter-spacing: 0.02em;
}

.blog-cat {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
  height: fit-content;
  min-width: 110px;
  text-align: center;
  margin-top: 3px;
}

.blog-cat--writing { background: var(--c-soft); color: var(--c-text-2); border: 1px solid var(--c-border); }
.blog-cat--oped    { background: var(--c-soft); color: var(--c-text-2); border: 1px solid var(--c-border); }
.blog-cat--imagery { background: var(--c-soft); color: var(--c-text-2); border: 1px solid var(--c-border); }

.blog-card-body {
  flex: 1;
}

.blog-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 4px;
  line-height: 1.4;
}

.blog-card-date {
  font-size: 0.75rem;
  color: var(--c-text-3);
  margin-bottom: 8px;
}

.blog-card-excerpt {
  font-size: 0.85rem;
  color: var(--c-text-2);
  line-height: 1.65;
}

/* image gallery slot for blog imagery card */
.blog-img-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.blog-img-slot {
  aspect-ratio: 4/3;
  border-radius: 6px;
  background: var(--c-soft);
  border: 1.5px dashed var(--c-border);
}

/* ── Gallery ── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto;
  gap: 16px;
}

.gallery-slot {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.gallery-slot--tall {
  grid-row: span 2;
  aspect-ratio: unset;
}

.gallery-slot--wide {
  grid-column: span 2;
}

.gallery-placeholder {
  width: 100%;
  height: 100%;
  min-height: 180px;
  background: var(--c-soft);
  border: 2px dashed var(--c-teal);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--c-text-3);
  font-size: 0.8rem;
  transition: background var(--trans);
}

.gallery-placeholder:hover { background: var(--c-pale); }

.gallery-slot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-slot:hover img { transform: scale(1.03); }

.gallery-note {
  text-align: center;
  margin-top: 28px;
  font-size: 0.85rem;
  color: var(--c-text-3);
  display: none;
}

/* ── Contact ── */
.contact-inner {
  text-align: center;
  padding: 0 24px;
}

.contact-links {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 12px;
  flex-wrap: wrap;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 22px 28px;
  min-width: 240px;
  text-align: left;
  transition: background var(--trans), border-color var(--trans), transform var(--trans);
}

.contact-card:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.25);
  transform: translateY(-2px);
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-teal);
  flex-shrink: 0;
}

.contact-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-teal);
}

.contact-value {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
}

/* ── Experience section ── */
.experience-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 860px;
  margin: 0 auto;
}

.exp-entry {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0 40px;
  padding: 36px 0;
  border-bottom: 1px solid var(--c-border);
}

.exp-entry:last-child { border-bottom: none; }

.exp-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 4px;
}

.exp-dates {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--c-text-3);
  letter-spacing: 0.04em;
}

.exp-org-badge {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 4px;
  background: var(--c-dark);
  color: #fff;
  width: fit-content;
  margin-top: 4px;
}

.exp-body {}

.exp-role {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 4px;
}

.exp-org {
  font-size: 0.88rem;
  color: var(--c-text-2);
  margin-bottom: 14px;
}

.exp-desc {
  font-size: 0.88rem;
  color: var(--c-text-2);
  line-height: 1.75;
  margin-bottom: 16px;
}

.exp-highlights {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.exp-highlights li {
  font-size: 0.85rem;
  color: var(--c-text-2);
  padding-left: 18px;
  position: relative;
  line-height: 1.6;
}

.exp-highlights li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--c-text-3);
}

.exp-cases {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--c-border);
}

.exp-cases-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-3);
  margin-bottom: 10px;
}

.exp-cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.exp-case-item {
  font-size: 0.82rem;
  color: var(--c-text-2);
  padding: 8px 12px;
  background: var(--c-soft);
  border: 1px solid var(--c-border);
  border-radius: 4px;
  line-height: 1.4;
}

.exp-case-item strong {
  display: block;
  font-weight: 600;
  color: var(--c-dark);
  font-size: 0.8rem;
}

@media (max-width: 720px) {
  .exp-entry { grid-template-columns: 1fr; gap: 8px; }
  .exp-meta { flex-direction: row; align-items: center; flex-wrap: wrap; gap: 8px; }
  .exp-cases-grid { grid-template-columns: 1fr; }
}

/* ── Student Work ── */
.student-work-intro {
  max-width: 640px;
  margin: 0 auto 40px;
  text-align: center;
}

.student-work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.sw-card {
  background: var(--c-page);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: box-shadow var(--trans);
}

.sw-card:hover { box-shadow: var(--shadow); }

.sw-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-3);
}

.sw-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-dark);
  line-height: 1.4;
  flex: 1;
}

.sw-excerpt {
  font-size: 0.82rem;
  color: var(--c-text-2);
  line-height: 1.65;
}

.sw-read-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--c-action);
  text-decoration: none;
}

.sw-read-link:hover { text-decoration: underline; }

.sw-share-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--c-border);
  margin-top: auto;
}

.sw-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 4px;
  text-decoration: none;
  border: 1px solid var(--c-border);
  color: var(--c-text-2);
  background: var(--c-soft);
  cursor: pointer;
  font-family: var(--font-body);
  transition: background var(--trans), color var(--trans);
}

.sw-share-btn:hover { background: var(--c-border); }
.sw-share-btn--li { color: #0A66C2; border-color: #0A66C2; }
.sw-share-btn--li:hover { background: #EFF6FF; }

@media (max-width: 900px) {
  .student-work-grid { grid-template-columns: 1fr; }
}

/* ── Credentials strip ── */
.about-credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--c-border);
}

.credential-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--c-text-2);
  background: var(--c-soft);
  border: 1px solid var(--c-border);
  padding: 6px 14px;
  border-radius: 4px;
}

.credential-chip::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-action);
  flex-shrink: 0;
}

/* ── Nyansapo sub-components ── */
.nyansapo-sub {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 18px 0 16px;
  padding: 16px;
  background: var(--c-soft);
  border: 1px solid var(--c-border);
  border-radius: 6px;
}

.nyansapo-sub-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nyansapo-sub-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-dark);
}

.nyansapo-sub-desc {
  font-size: 0.8rem;
  color: var(--c-text-2);
  line-height: 1.6;
}

.nyansapo-disclaimer {
  font-size: 0.75rem;
  color: var(--c-text-3);
  font-style: italic;
  line-height: 1.6;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--c-border);
}

@media (max-width: 640px) {
  .nyansapo-sub { grid-template-columns: 1fr; }
}

/* ── Experience categories ── */
.exp-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.exp-cat {
  padding: 14px 16px;
  background: var(--c-soft);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-action);
  border-radius: 4px;
}

.exp-cat-title {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 5px;
}

.exp-cat-desc {
  font-size: 0.78rem;
  color: var(--c-text-2);
  line-height: 1.55;
}

@media (max-width: 900px) {
  .exp-categories { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .exp-categories { grid-template-columns: 1fr; }
}

/* ── Experience representative examples list ── */
.exp-cases-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.exp-case-entry {
  padding: 12px 0;
  border-bottom: 1px solid var(--c-border);
}

.exp-case-entry:last-child { border-bottom: none; }

.exp-case-entry strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 3px;
}

.exp-case-entry p {
  font-size: 0.82rem;
  color: var(--c-text-2);
  line-height: 1.55;
}

/* ── Contact groups ── */
.contact-group-label {
  width: 100%;
  text-align: left;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-top: 20px;
  margin-bottom: 6px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.contact-group-label:first-child { margin-top: 0; }

/* ── Pub list (always visible, no accordion) ── */
.pub-list-open {
  display: flex;
  flex-direction: column;
  background: var(--c-page);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 0;
}

/* ── Footer ── */
.footer {
  background: #06101E;
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-name {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255,255,255,0.5);
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-photo-wrap {
    position: static;
    max-width: 320px;
    margin: 0 auto;
  }

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

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-slot--tall { grid-row: span 1; aspect-ratio: 4/3; }
  .gallery-slot--wide { grid-column: span 1; }

  .pub-entry { flex-wrap: wrap; gap: 10px; }
  .pub-type  { min-width: auto; }

  .blog-card { flex-direction: column; gap: 10px; }
  .blog-cat  { min-width: auto; text-align: left; }

  .bmore-row { flex-wrap: wrap; }
}

@media (max-width: 640px) {
  .section { padding: 72px 0; }

  .nav-links {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    background: var(--c-dark);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    min-height: 100vh;
    z-index: 99;
  }

  .nav-links.open { display: flex; }

  .nav-link {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.85);
  }

  .nav-toggle { display: flex; z-index: 100; }

  .hero-inner { padding: 100px 24px 60px; }

  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-slot--wide { grid-column: span 1; }

  .contact-links { flex-direction: column; align-items: stretch; }
  .contact-card { min-width: unset; }

  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }

  .about-stats { gap: 24px; }

  .teaching-wrap { padding: 24px 20px; }

  .rp-images { grid-template-columns: 1fr; }
  .rp-img-side { display: none; }
  .rp-inner { padding: 24px 20px; }

  .courses-table th,
  .courses-table td { padding: 12px 14px; }

  .blog-img-gallery { grid-template-columns: repeat(2, 1fr); }
}