:root {
  color-scheme: light;
  --color-background: #f7f4ef;
  --color-surface: #fffdf9;
  --color-surface-muted: #f0ebe3;
  --color-text: #252a2e;
  --color-text-muted: #706f6b;
  --color-border: #e5ded3;
  --color-accent: #9a6b4f;
  --color-accent-dark: #704a37;
  --shadow-header: 0 1px 0 rgb(37 42 46 / 10%);
  --container-width: 1120px;
  --header-height: 76px;
  --section-spacing: clamp(5rem, 12vw, 9rem);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 90% 0%, rgb(232 216 198 / 48%), transparent 25rem),
    var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
}

a {
  color: inherit;
  font-size: inherit;
}

.container {
  width: min(calc(100% - 2rem), var(--container-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  min-height: var(--header-height);
  background: rgb(255 253 249 / 90%);
  border-bottom: 1px solid rgb(229 222 211 / 85%);
  box-shadow: var(--shadow-header);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
}

.site-logo {
  color: var(--color-text);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.site-logo:focus-visible,
.nav-list a:focus-visible,
.menu-toggle:focus-visible {
  outline: 3px solid rgb(154 107 79 / 35%);
  outline-offset: 4px;
}

.nav-list {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: center;
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav-list a {
  position: relative;
  display: block;
  padding-block: 0.4rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
  transition: color 180ms ease;
}

.nav-list a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--color-accent);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--color-accent-dark);
}

.nav-list a:hover::after,
.nav-list a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  background: var(--color-surface);
  cursor: pointer;
}

.menu-toggle-line {
  display: block;
  height: 2px;
  margin-block: 0.28rem;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform 180ms ease, opacity 180ms ease;
}

.page-section {
  min-height: 70vh;
  padding-block: var(--section-spacing);
  scroll-margin-top: var(--header-height);
}

.page-section:nth-child(even):not(.hero-section) {
  background: rgb(255 253 249 / 65%);
}

.section-placeholder {
  display: grid;
  align-items: center;
}

.section-label {
  margin: 0 0 0.75rem;
  color: var(--color-accent);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-section {
  display: grid;
  align-items: center;
  min-height: calc(100vh - var(--header-height));
  background:
    radial-gradient(circle at 75% 50%, rgb(232 216 198 / 58%), transparent 25rem),
    transparent;
}

.hero-grid {
  display: grid;
  gap: clamp(3rem, 8vw, 7rem);
  align-items: center;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
}

.hero-content {
  max-width: 42rem;
}

h1,
h2 {
  max-width: 14ch;
  margin: 0;
  letter-spacing: -0.055em;
  line-height: 1.05;
}

h1 {
  font-size: clamp(3rem, 8vw, 6.5rem);
}

.hero-role {
  margin: 1.25rem 0 0;
  color: var(--color-accent-dark);
  font-size: clamp(1.5rem, 2vw, 1.5rem);
  font-weight: 700;
}

.hero-intro {
  max-width: 36rem;
  margin: 1.25rem 0 0;
  color: var(--color-text-muted);
  font-size: clamp(1.35rem, 2vw, 1.2rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.7rem 1.15rem;
  border: 1px solid transparent;
  border-radius: 0.75rem;
  font-size: 0.95rem;
  font-weight: 750;
  text-decoration: none;
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

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

.button:focus-visible {
  outline: 3px solid rgb(154 107 79 / 35%);
  outline-offset: 3px;
}

.button-primary {
  background: var(--color-accent);
  color: #ffffff;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--color-accent-dark);
}

.button-secondary {
  border-color: var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
}

.hero-social-links {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.social-link {
  display: grid;
  place-items: center;
  width: 2.7rem;
  height: 2.7rem;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text-muted);
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.social-link:hover,
.social-link:focus-visible {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: #ffffff;
  transform: translateY(-2px);
}

.social-link:focus-visible {
  outline: 3px solid rgb(154 107 79 / 35%);
  outline-offset: 3px;
}

.social-link svg {
  width: 1.1rem;
  height: 1.1rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.social-icon-image {
  width: 1.1rem;
  height: 1.1rem;
  object-fit: contain;
}

.social-link:first-child svg {
  fill: currentColor;
  stroke: none;
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: clamp(22rem, 45vw, 36rem);
}

.hero-image {
  display: block;
  width: min(100%, 25rem);
  aspect-ratio: 4 / 5;
  border: 0.75rem solid rgb(255 253 249 / 85%);
  border-radius: 1.5rem;
  object-fit: cover;
  object-position: center;
  box-shadow:
    1.25rem 1.25rem 0 rgb(154 107 79 / 18%),
    0 2rem 4rem rgb(112 74 55 / 20%);
  transform: rotate(2deg);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.hero-image:hover {
  box-shadow:
    1.25rem 1.25rem 0 rgb(154 107 79 / 24%),
    0 2.25rem 4.5rem rgb(112 74 55 / 24%);
  transform: rotate(0deg) translateY(-0.25rem);
}



h2 {
  font-size: clamp(2.5rem, 6vw, 5rem);
}

.section-note {
  max-width: 38rem;
  margin: 1.5rem 0 0;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgb(229 222 211 / 90%);
  border-radius: 1.25rem;
  background: var(--color-surface);
  box-shadow: 0 0.75rem 2rem rgb(112 74 55 / 7%);
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.project-card:hover {
  border-color: rgb(154 107 79 / 45%);
  box-shadow: 0 1.25rem 2.5rem rgb(112 74 55 / 15%);
  transform: translateY(-0.35rem);
}

.project-image-wrapper {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-surface-muted);
}

.project-image-wrapper::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgb(37 42 46 / 15%));
  content: "";
  pointer-events: none;
}

.project-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 220ms ease;
}

.project-card:hover .project-image {
  transform: scale(1.04);
}

.project-card-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1.6rem;
}

.project-card h3 {
  margin: 0;
  color: var(--color-text);
  font-size: 1.4rem;
  letter-spacing: -0.03em;
}

.project-card p {
  min-height: 4.8rem;
  margin: 0.75rem 0 0;
  color: var(--color-text-muted);
  font-size: 0.94rem;
  line-height: 1.65;
}

.project-tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0;
  margin: 1.4rem 0 1.75rem;
  list-style: none;
}

.project-tech-list li {
  padding: 0.35rem 0.65rem;
  border: 1px solid rgb(154 107 79 / 18%);
  border-radius: 999px;
  background: var(--color-surface-muted);
  color: var(--color-accent-dark);
  font-size: 0.75rem;
  font-weight: 750;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-accent-dark);
  font-size: 0.95rem;
  font-weight: 750;
  text-decoration: none;
}

.project-link:hover,
.project-link:focus-visible {
  color: var(--color-accent);
}

.project-link:focus-visible {
  outline: 3px solid rgb(154 107 79 / 35%);
  outline-offset: 3px;
}

.research-list {
  display: grid;
  gap: 1.5rem;
  max-width: 58rem;
  margin-top: 3rem;
}

.research-item {
  position: relative;
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 1.5rem;
  min-height: 16rem;
  padding: 1.75rem 2rem 1.75rem 0;
  border-bottom: 1px solid var(--color-border);
  transition: border-color 180ms ease, transform 180ms ease;
}

.research-item:first-child {
  border-top: 1px solid var(--color-border);
}

.research-item:hover {
  border-color: rgb(154 107 79 / 55%);
  transform: translateX(0.35rem);
}

.research-marker {
  display: grid;
  place-items: center;
  align-self: start;
  width: 3rem;
  height: 3rem;
  border: 1px solid rgb(154 107 79 / 45%);
  border-radius: 50%;
  background: var(--color-background);
  color: var(--color-accent-dark);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.research-content {
  display: flex;
  flex-direction: column;
  max-width: 42rem;
}

.research-kicker {
  margin: 0 0 0.4rem;
  color: var(--color-accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.research-item h3 {
  margin: 0;
  color: var(--color-text);
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
  letter-spacing: -0.035em;
}

.research-item p:not(.research-kicker) {
  margin: 0.7rem 0 0;
  color: var(--color-text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
}

.research-topic {
  display: inline-block;
  margin-top: 1.1rem;
  padding: 0.35rem 0.7rem;
  border-left: 2px solid var(--color-accent);
  background: var(--color-surface-muted);
  color: var(--color-accent-dark);
  font-size: 0.78rem;
  font-weight: 750;
}

.research-link {
  display:inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  color: var(--shadow-header);
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
}

.research-link:hover,
.research-link:focus-visible {
  color: var(--color-accent);
}

.research-link:focus-visible {
  outline: 3px solid rgb(154 107 79 / 35%);
  outline-offset: 3px;
}

.site-footer {
  padding-block: 2rem;
  background: #2d3133;
  color: rgb(255 253 249 / 72%);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 720px) {
  .menu-toggle {
    display: block;
  }

  .site-navigation {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 1rem;
    left: 1rem;
    display: none;
    padding: 0.6rem;
    border: 1px solid var(--color-border);
    border-radius: 1rem;
    background: var(--color-surface);
    box-shadow: 0 1rem 2rem rgb(37 42 46 / 12%);
  }

  .site-navigation.is-open {
    display: block;
  }

  .nav-list {
    display: grid;
    gap: 0.15rem;
  }

  .nav-list a {
    padding: 0.75rem 0.85rem;
    border-radius: 0.6rem;
  }

  .nav-list a:hover,
  .nav-list a:focus-visible {
    background: var(--color-surface-muted);
  }

  .nav-list a::after {
    display: none;
  }

  .menu-toggle[aria-expanded="true"] .menu-toggle-line:nth-child(2) {
    transform: translateY(0.32rem) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] .menu-toggle-line:nth-child(3) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] .menu-toggle-line:nth-child(4) {
    transform: translateY(-0.32rem) rotate(-45deg);
  }

  .hero-section {
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .hero-visual {
    order: -1;
    min-height: 17rem;
  }

  .hero-image {
    width: min(100%, 20rem);
  }

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

  .project-card p {
    min-height: auto;
  }

  .research-item {
    grid-template-columns: 3rem minmax(0, 1fr);
    gap: 1rem;
    padding-right: 0;
  }

  .research-marker {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 0.7rem;
  }

}

@media (min-width: 721px) and (max-width: 980px) {
  .projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}