:root {
  --color-bg: #f7f4ee;
  --color-surface: #ffffff;
  --color-text: #2b2622;
  --color-text-muted: #5c5449;
  --color-primary: #8f3239;
  --color-primary-dark: #6f2429;
  --color-secondary: #3d6259;
  --color-secondary-light: #e9efec;
  --color-accent: #b6862f;
  --color-border: #e2dccf;
  --radius: 14px;
  --max-width: 1120px;
  --font-base: "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Space Grotesk", "Inter", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 17px;
  line-height: 1.6;
}

h1, h2, h3,
.logo-text {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--font-base);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 246, 239, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-full-img {
  height: 44px;
  width: auto;
  display: block;
}

.main-nav {
  display: flex;
  gap: 32px;
}

.main-nav a {
  font-weight: 600;
  color: var(--color-text);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.main-nav a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-toggle {
  font-family: inherit;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 16px;
  cursor: pointer;
  color: var(--color-text);
}

.lang-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  display: block;
}

/* Hero */

.hero {
  padding: 96px 0 80px;
  background: linear-gradient(180deg, #efe9db 0%, var(--color-bg) 100%);
}

.hero-inner {
  max-width: 760px;
}

.hero-logo {
  height: 110px;
  width: auto;
  margin-bottom: 24px;
  filter: drop-shadow(0 6px 14px rgba(44, 36, 28, 0.15));
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin: 0 0 12px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  margin: 0 0 20px;
  color: var(--color-primary-dark);
  line-height: 1.15;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin: 0 0 32px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  transition: transform 0.15s ease, background 0.2s ease, color 0.2s ease;
  border: 2px solid transparent;
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

/* Sections */

.section {
  padding: 88px 0;
}

.section-heading {
  max-width: 680px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-heading h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  margin: 0 0 16px;
  color: var(--color-primary-dark);
}

.section-sub {
  color: var(--color-text-muted);
  margin: 0;
}

.about {
  background: var(--color-surface);
}

.about-inner .section-heading {
  margin-bottom: 32px;
}

.about-content {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  color: var(--color-text-muted);
  margin: 0 0 18px;
}

.name-callout {
  display: flex;
  gap: 20px;
  text-align: left;
  background: var(--color-secondary-light);
  border-left: 4px solid var(--color-secondary);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-top: 32px;
}

.name-callout-icon {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-secondary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.name-callout-icon svg {
  width: 24px;
  height: 24px;
}

.name-callout h3 {
  margin: 0 0 8px;
  color: var(--color-secondary);
  font-size: 1.15rem;
}

.name-callout p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.97rem;
}

/* Research */

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

.research-inner .section-heading {
  margin-bottom: 32px;
}

.research-content {
  max-width: 760px;
  margin: 0 auto;
}

.research-content p {
  color: var(--color-text-muted);
  margin: 0 0 18px;
}

.research-content strong {
  color: var(--color-primary-dark);
}

.research-citation {
  font-size: 0.9rem;
  font-style: italic;
  color: var(--color-secondary);
  border-left: 3px solid var(--color-secondary);
  padding-left: 16px;
  margin: 0 0 24px !important;
}

.research-cta {
  text-align: center;
}

/* People */

.people {
  background: var(--color-surface);
}

.people-grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 880px;
  margin: 0 auto 44px;
}

.people-grid:last-of-type {
  margin-bottom: 0;
}

.people-group-title {
  max-width: 880px;
  margin: 0 auto 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-secondary-light);
  color: var(--color-primary-dark);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.person-card {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
}

.person-photo {
  flex: 0 0 auto;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  overflow: hidden;
}

.person-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.person-photo.placeholder {
  background: var(--color-secondary-light);
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.person-photo.placeholder svg {
  width: 44px;
  height: 44px;
}

.person-info h3 {
  margin: 0 0 4px;
  color: var(--color-primary-dark);
  font-size: 1.15rem;
}

.person-role {
  color: var(--color-secondary);
  font-weight: 700;
  font-size: 0.9rem;
  margin: 0 0 12px;
}

.person-bio {
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.person-bio p {
  margin: 0 0 12px;
}

.person-bio p:last-child {
  margin-bottom: 0;
}

.person-bio a {
  color: var(--color-secondary);
  text-decoration: underline;
}

.person-bio a:hover {
  color: var(--color-primary);
}

@media (max-width: 560px) {
  .person-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

/* History */

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

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-top: 8px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 27px;
  width: 3px;
  background: repeating-linear-gradient(
    180deg,
    var(--color-primary) 0,
    var(--color-primary) 10px,
    transparent 10px,
    transparent 18px
  );
}

.timeline-item {
  position: relative;
  display: flex;
  gap: 24px;
  padding-bottom: 48px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 6px var(--color-bg);
}

.timeline-icon {
  width: 26px;
  height: 26px;
  color: #fff;
}

.timeline-card {
  flex: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-top: 6px;
}

.timeline-year {
  display: inline-block;
  font-weight: 800;
  font-size: 0.95rem;
  color: #fff;
  background: var(--color-secondary);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.timeline-card h3 {
  margin: 0 0 10px;
  color: var(--color-primary-dark);
  font-size: 1.2rem;
}

.timeline-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.97rem;
}

@media (min-width: 720px) {
  .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .timeline-item {
    justify-content: flex-end;
  }

  .timeline-item .timeline-marker {
    order: 2;
    margin: 0 auto;
  }

  .timeline-item .timeline-card {
    order: 1;
    width: calc(50% - 52px);
    margin-right: 24px;
    margin-top: 0;
    text-align: right;
  }

  .timeline-year {
    margin-left: auto;
  }

  .timeline-item:nth-child(even) {
    justify-content: flex-start;
  }

  .timeline-item:nth-child(even) .timeline-marker {
    order: 1;
  }

  .timeline-item:nth-child(even) .timeline-card {
    order: 2;
    margin-right: 0;
    margin-left: 24px;
    text-align: left;
  }

  .timeline-item:nth-child(even) .timeline-year {
    margin-left: 0;
  }
}

/* Projects */

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(44, 36, 28, 0.08);
}

.project-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-secondary-light);
  color: var(--color-secondary);
}

.project-icon svg {
  width: 24px;
  height: 24px;
}

.project-card h3 {
  margin: 0 0 10px;
  color: var(--color-secondary);
  font-size: 1.2rem;
}

.project-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.98rem;
}

.project-more-btn {
  display: inline-block;
  margin-top: 14px;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  text-decoration: underline;
}

.project-more-btn:hover {
  color: var(--color-primary-dark);
}

.project-more {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.project-more[hidden] {
  display: none;
}

.project-more p {
  color: var(--color-text-muted);
  font-size: 0.94rem;
  margin: 0 0 12px;
}

.project-more p:last-child {
  margin-bottom: 0;
}

.project-more ul {
  margin: 0 0 12px;
  padding-left: 20px;
  color: var(--color-text-muted);
  font-size: 0.94rem;
}

.project-more ul li {
  margin-bottom: 6px;
}

/* Gallery */

.gallery {
  background: var(--color-secondary-light);
}

.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
}

.filter-btn {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 8px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.filter-btn:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.filter-btn.active {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: #fff;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.gallery-item[hidden] {
  display: none;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gallery-tags {
  position: absolute;
  left: 10px;
  bottom: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.gallery-tag {
  background: rgba(43, 38, 34, 0.75);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 4px 10px;
  border-radius: 999px;
  backdrop-filter: blur(2px);
}

.gallery-empty {
  text-align: center;
  color: var(--color-text-muted);
  font-style: italic;
}

.gallery-cta {
  text-align: center;
  margin-top: 36px;
}

/* Contact */

.contact {
  background: var(--color-surface);
}

.contact-inner {
  text-align: center;
}

.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 8px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-secondary-light);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 14px 26px;
  font-weight: 700;
  color: var(--color-secondary);
  transition: background 0.2s ease;
}

.contact-link:hover {
  background: #dcebd9;
}

.contact-icon {
  font-size: 1.2rem;
}

/* Lightbox */

.gallery-item img {
  cursor: zoom-in;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(20, 17, 14, 0.92);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.lightbox[hidden] {
  display: none;
}

.lightbox-img {
  max-width: min(1100px, 90vw);
  max-height: 85vh;
  border-radius: 8px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 8px;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.12);
  border: none;
  color: #fff;
  font-size: 2.4rem;
  line-height: 1;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.24);
}

.lightbox-prev {
  left: 20px;
}

.lightbox-next {
  right: 20px;
}

@media (max-width: 560px) {
  .lightbox {
    padding: 16px;
  }

  .lightbox-nav {
    width: 42px;
    height: 42px;
    font-size: 1.8rem;
  }

  .lightbox-close {
    top: 10px;
    right: 12px;
  }
}

/* Footer */

.site-footer {
  background: var(--color-text);
  color: #d8d1c4;
  padding: 28px 0;
}

.footer-inner p {
  margin: 0;
  font-size: 0.9rem;
  text-align: center;
}

/* Responsive */

@media (max-width: 860px) {
  .logo-full-img {
    height: 34px;
  }

  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    transform: translateY(-150%);
    transition: transform 0.25s ease;
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .main-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 520px) {
  .hero {
    padding: 72px 0 56px;
  }

  .section {
    padding: 64px 0;
  }

  .hero-cta {
    flex-direction: column;
  }

  .btn {
    text-align: center;
  }
}