/* ============================================================
   SHARED INNER PAGES CSS
   ============================================================ */

/* ---- Page hero ---- */
.page-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0d2038 0%, #0a1626 100%);
  padding-block: clamp(var(--space-12), 8vw, var(--space-20));
}
/* Photo background layer */
.page-hero-bg-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.38;
  z-index: 0;
}
/* Gradient overlay — ensures text stays readable */
.page-hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(8, 18, 32, 0.88) 0%,
    rgba(8, 18, 32, 0.65) 50%,
    rgba(8, 18, 32, 0.30) 100%
  );
  z-index: 1;
}
.page-hero-inner {
  position: relative;
  z-index: 2;
}
.page-hero-inner { max-width: 720px; }
.page-hero-title {
  font-size: var(--text-2xl);
  color: #fff;
  margin-bottom: var(--space-4);
}
.page-hero-desc {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.8);
  max-width: 62ch;
  line-height: 1.75;
}
.page-hero .section-label { color: var(--color-accent-2); }

/* ---- Pub filter bar ---- */
.pub-filter-bar {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}
.pub-filter {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  border: 1.5px solid rgba(255,255,255,0.4);
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.pub-filter.active, .pub-filter:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
}

/* ============================================================
   RESEARCH PAGE
   ============================================================ */

.research-page { background: var(--color-bg); }

.research-area {
  padding-block: clamp(var(--space-10), 6vw, var(--space-16));
}
.research-area-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}
.research-area-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-accent-2);
  opacity: 0.5;
  line-height: 1;
  flex-shrink: 0;
  min-width: 60px;
}
.research-area-title {
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.research-area-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
}
.research-area-body {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-10);
  align-items: start;
}
.research-area-body--reverse {
  grid-template-columns: 380px 1fr;
}
.research-area-body--reverse .research-area-text { order: 2; }
.research-area-body--reverse .research-area-visual { order: 1; }

.research-area-text p {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-5);
}
.research-area-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
}
.research-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.research-figure-placeholder {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  min-height: 260px;
  justify-content: center;
}
.research-figure-placeholder svg { max-width: 200px; max-height: 200px; }
.research-figure-placeholder p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  font-style: italic;
  max-width: unset;
}

/* ============================================================
   PUBLICATIONS PAGE
   ============================================================ */

.publications-page { background: var(--color-bg); }
.pub-group-title {
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}
.pub-year-group {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
  align-items: start;
}
.pub-year-label {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-accent-2);
  padding-top: var(--space-4);
  position: sticky;
  top: 90px;
}
.pub-year-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.pub-item {
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-5);
  transition: background var(--transition);
}
.pub-item:hover { background: var(--color-surface); }
.pub-item-inner { padding-inline: var(--space-4); }
.pub-title {
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: var(--space-2);
  max-width: unset;
}
.pub-title a { color: var(--color-text); text-decoration: none; }
.pub-title a:hover { color: var(--color-accent); text-decoration: underline; }
.pub-authors {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
  max-width: unset;
}
.pub-journal {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  max-width: unset;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.pub-badge {
  display: inline-block;
  padding: 1px var(--space-2);
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.pub-badge--cover { background: color-mix(in srgb, var(--color-accent-2) 15%, white); color: var(--color-accent-2); }
[data-theme='dark'] .pub-badge--cover { background: color-mix(in srgb, var(--color-accent-2) 20%, #1a1917); }
.pub-equal {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-style: italic;
}
.pub-links { display: flex; gap: var(--space-3); }
.pub-link {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-accent);
  text-decoration: none;
  border: 1px solid var(--color-accent);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.pub-link:hover { background: var(--color-accent); color: #fff; }

/* ============================================================
   TEAM PAGE
   ============================================================ */

.team-page { background: var(--color-bg); }
.team-group-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-2);
  margin-bottom: var(--space-6);
  margin-top: var(--space-12);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}
/* PI full card */
.pi-full-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-10);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin-bottom: var(--space-8);
  align-items: start;
}
.pi-full-photo-wrap { display: flex; justify-content: center; }
.pi-full-photo { width: 200px; height: 200px; border-radius: 50%; object-fit: cover; border: 3px solid var(--color-accent); }
.pi-full-name { font-size: var(--text-xl); margin-bottom: var(--space-1); }
.pi-full-bio {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

/* Team grid */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}
.team-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition);
}
.team-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.team-photo-wrap { display: flex; justify-content: center; margin-bottom: var(--space-4); }
.team-photo {
  width: 120px; height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
}
.team-photo-placeholder {
  width: 120px; height: 120px;
  border-radius: 50%;
  background: var(--color-accent-light);
  border: 2px solid var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.team-photo-placeholder.large { width: 180px; height: 180px; }
.team-photo-placeholder svg { width: 60%; height: 60%; }
.team-member-name {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.team-member-role {
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.team-member-joined {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
}
.team-member-bio {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-4);
  text-align: left;
}
.team-member-links { display: flex; gap: var(--space-3); flex-wrap: wrap; justify-content: center; }
.team-link {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.team-link:hover { border-color: var(--color-accent); }

/* Alumni */
.alumni-list {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
}
.alumni-items { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-4); }
.alumni-item { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; font-size: var(--text-sm); }
.alumni-name { font-weight: 600; color: var(--color-text); }
.alumni-degree { color: var(--color-text-muted); font-style: italic; }
.alumni-now { color: var(--color-accent); }

/* ============================================================
   CONTACT PAGE
   ============================================================ */

.contact-page { background: var(--color-bg); padding-block: clamp(var(--space-12), 8vw, var(--space-20)); }
.contact-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: var(--space-10);
  align-items: start;
}
.contact-block { margin-bottom: var(--space-8); }
.contact-block-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}
.contact-block-text { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.7; }
.contact-block--highlight {
  background: var(--color-accent-light);
  border: 1px solid color-mix(in srgb, var(--color-accent) 20%, transparent);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.contact-detail {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  align-items: flex-start;
}
.contact-icon { width: 20px; height: 20px; flex-shrink: 0; color: var(--color-accent); margin-top: 3px; }
.contact-detail-label { font-size: var(--text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-faint); margin-bottom: var(--space-1); }
.contact-detail-value { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; }
.contact-social { display: flex; flex-direction: column; gap: var(--space-3); }
.social-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.social-link:hover { color: var(--color-accent); }

/* Form */
.contact-form-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}
.contact-form-title { font-size: var(--text-lg); color: var(--color-text); margin-bottom: var(--space-6); }
.contact-form { display: flex; flex-direction: column; gap: var(--space-5); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-label { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); }
.form-input {
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 15%, transparent);
}
.form-textarea { resize: vertical; min-height: 140px; }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b6a67' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: var(--space-10); cursor: pointer; }
.form-submit { align-self: flex-start; }
.form-note { font-size: var(--text-xs); color: var(--color-text-faint); }

/* ============================================================
   NEWS PAGE
   ============================================================ */

.news-page { background: var(--color-bg); }
.news-page-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

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

.teaching-page { background: var(--color-bg); }
.course-list { display: flex; flex-direction: column; gap: var(--space-6); }
.course-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-8);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--space-6);
  align-items: start;
  transition: box-shadow var(--transition);
}
.course-item:hover { box-shadow: var(--shadow-md); }
.course-code {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-accent-2);
  line-height: 1;
}
.course-semester { font-size: var(--text-xs); color: var(--color-text-faint); margin-top: var(--space-1); }
.course-title { font-size: var(--text-base); font-weight: 700; color: var(--color-text); margin-bottom: var(--space-2); }
.course-desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.7; }

/* ============================================================
   CTA (shared across pages)
   ============================================================ */

.cta-section { background: var(--color-bg); }
.cta-inner {
  background: linear-gradient(135deg, var(--color-accent) 0%, #0f2540 100%);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 6vw, var(--space-16));
  text-align: center;
}
.cta-title { font-size: var(--text-xl); color: #fff; margin-bottom: var(--space-4); }
.cta-desc { font-size: var(--text-base); color: rgba(255,255,255,0.8); max-width: 52ch; margin: 0 auto var(--space-8); line-height: 1.7; }

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

@media (max-width: 960px) {
  .research-area-body,
  .research-area-body--reverse { grid-template-columns: 1fr; }
  .research-area-body--reverse .research-area-text { order: 1; }
  .research-area-body--reverse .research-area-visual { order: 2; }
  .pi-full-card { grid-template-columns: 1fr; text-align: center; }
  .pi-full-photo-wrap { justify-content: center; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .pub-year-group { grid-template-columns: 60px 1fr; }
  .news-page-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .team-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .course-item { grid-template-columns: 1fr; }
  .pub-year-group { grid-template-columns: 1fr; }
  .pub-year-label { position: static; font-size: var(--text-base); padding-bottom: var(--space-3); border-bottom: 1px solid var(--color-border); margin-bottom: var(--space-4); }
}

/* ============================================================
   CONTACT AFFILIATION BAR
   ============================================================ */

.contact-affil {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-10) 0;
}
.affil-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  text-align: center;
}
.affil-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.affil-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  font-weight: 600;
}
.affil-value {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

/* ============================================================
   GALLERY PAGE
   ============================================================ */

.gallery-page { background: var(--color-bg); padding-block: clamp(var(--space-12), 8vw, var(--space-20)); }

.gallery-filter-bar {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}
.gallery-filter-btn {
  padding: var(--space-2) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-interactive);
}
.gallery-filter-btn:hover,
.gallery-filter-btn.active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.gallery-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
  display: flex;
  flex-direction: column;
}
.gallery-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.gallery-visual {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.gallery-visual svg {
  opacity: 0.18;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.gallery-visual-label {
  position: relative;
  z-index: 1;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.9);
  padding: var(--space-2) var(--space-4);
  background: rgba(0,0,0,0.35);
  border-radius: var(--radius-full);
}

/* Tint variants per category */
.gallery-visual--cfd    { background: linear-gradient(135deg, #1a3a5c 0%, #0d2235 100%); }
.gallery-visual--exp    { background: linear-gradient(135deg, #2a4a2a 0%, #1a3020 100%); }
.gallery-visual--urans  { background: linear-gradient(135deg, #3a2a5c 0%, #241a3c 100%); }
.gallery-visual--les    { background: linear-gradient(135deg, #5c3a1a 0%, #3c2010 100%); }
.gallery-visual--heat   { background: linear-gradient(135deg, #5c1a1a 0%, #3c1010 100%); }
.gallery-visual--flow   { background: linear-gradient(135deg, #1a4a5c 0%, #103040 100%); }

.gallery-body {
  padding: var(--space-5) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}
.gallery-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.gallery-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
  color: var(--color-accent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 25%, transparent);
}
.gallery-tag--exp {
  background: color-mix(in srgb, var(--color-accent-2) 12%, transparent);
  color: var(--color-accent-2);
  border-color: color-mix(in srgb, var(--color-accent-2) 25%, transparent);
}
.gallery-caption {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.45;
}
.gallery-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ---- responsive gallery ---- */
@media (max-width: 960px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .affil-grid   { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .affil-grid   { grid-template-columns: 1fr; }
}