.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.01em;
}

.brand-logo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand-home-logo {
  width: clamp(10rem, 20vw, 13rem);
  height: clamp(4rem, 10vw, 4rem);
  position: relative;
  display: inline-block;
}

.logo-dark {
  display: none;
}

[data-theme="dark"] .logo-light {
  display: none;
}

[data-theme="dark"] .logo-dark {
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.site-nav a,
.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 0.48rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.site-nav a[aria-current="page"] {
  background: color-mix(in srgb, var(--accent) 14%, var(--surface));
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
}

.site-nav .nav-icon-button {
  width: var(--nav-icon-button-size);
  height: var(--nav-icon-button-size);
  flex: 0 0 var(--nav-icon-button-size);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-radius: 999px;
  line-height: 0;
}

.site-nav .nav-icon-button .nav-icon {
  width: var(--nav-icon-size);
  height: var(--nav-icon-size);
  object-fit: contain;
  display: block;
}


.theme-toggle {
  cursor: pointer;
  transition: transform 120ms ease;
}

.theme-toggle:hover,
.button:hover,
.card:hover {
  transform: translateY(-2px);
}

.hero {
  padding: 4.2rem 0 2.5rem;
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 1.2rem;
}

.hero-side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.profile-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 1.2rem;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.profile-photo {
  width: min(16rem, 58vw);
  aspect-ratio: 1 / 1;
  border-radius: 999px;
  object-fit: cover;
  object-position: center;
  border: 2px solid color-mix(in srgb, var(--border) 70%, transparent);
  box-shadow: 0 12px 26px rgba(25, 45, 75, 0.18);
}

.profile-name {
  margin-top: 0.8rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.profile-social {
  margin-top: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.profile-social .nav-icon-button {
  width: var(--nav-icon-button-size);
  height: var(--nav-icon-button-size);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  line-height: 0;
}

.profile-social .nav-icon {
  width: var(--nav-icon-size);
  height: var(--nav-icon-size);
  object-fit: contain;
  display: block;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
}

.button-row {
  display: flex;
  gap: 0.8rem;
  margin-top: 1.2rem;
  flex-wrap: wrap;
}

.stack-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.75rem;
}

.stack-icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
}

.stack-icon {
  width: auto;
  height: 26px;
  object-fit: contain;
  opacity: 0.5;
  filter: grayscale(100%);
  transition: opacity 120ms ease;
}

[data-theme="dark"] .stack-icon {
  opacity: 0.56;
}

.stack-icon-link:hover .stack-icon,
.stack-icon-link:focus-visible .stack-icon {
  opacity: 0.7;
}

.button {
  padding: 0.65rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  transition: transform 120ms ease, background-color 120ms ease;
}

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #f8fbff;
}

.button-primary:hover {
  background: var(--accent-strong);
  color: #f8fbff;
}

.panel,
.card,
.code-panel {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 1rem;
  padding: 1.1rem;
  box-shadow: var(--shadow);
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

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

.card {
  display: grid;
  gap: 0.7rem;
  transition: transform 120ms ease;
}

.project-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
}

.project-card-featured {
  grid-column: 1 / -1;
  width: min(44rem, 100%);
  justify-self: center;
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  box-shadow: 0 10px 24px color-mix(in srgb, var(--text) 14%, transparent);
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 0.72rem;
  height: 100%;
  padding: 1.15rem;
}

.project-card__image,
.project-thumb {
  width: 100%;
  height: var(--project-thumb-height);
  object-fit: cover;
  border-radius: 0.75rem;
  border: 1px solid color-mix(in srgb, var(--border) 65%, transparent);
  box-shadow: 0 6px 16px color-mix(in srgb, var(--text) 12%, transparent);
}

.project-copy {
  text-align: justify;
  text-justify: inter-word;
  line-height: 1.55;
  margin: 0;
}

.project-card .button {
  margin-top: auto;
  align-self: flex-start;
  min-width: 8rem;
}

.project-card .button-row {
  margin-top: auto;
}

.project-list-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  align-items: stretch;
}

.project-list-grid .project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-list-grid .project-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  flex: 1 1 auto;
}

.project-list-grid .project-card__actions {
  margin-top: auto;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding-top: 0.4rem;
}

.project-list-grid .project-card__actions .button {
  margin-top: 0;
}

/* Home project highlights compact list */
.project-compact-list {
  display: grid;
  gap: 0.7rem;
}

.project-compact-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.8rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 0.65rem 0.8rem;
}

.project-compact-thumb {
  width: 52px;
  height: 52px;
  border-radius: 0.7rem;
  object-fit: cover;
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}

.project-compact-meta {
  min-width: 0;
  display: grid;
  gap: 0.15rem;
}

.project-compact-meta h3 {
  font-size: 1rem;
  margin: 0;
}

.project-compact-summary {
  margin: 0;
  color: var(--muted);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-compact-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.icon-action-button {
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  line-height: 0;
  transition: transform 120ms ease, background-color 120ms ease;
}

.icon-action-button svg {
  width: 0.95rem;
  height: 0.95rem;
}

.icon-action-button .nav-icon {
  width: 0.95rem;
  height: 0.95rem;
  object-fit: contain;
  display: block;
}

.icon-action-button:hover,
.icon-action-button:focus-visible {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
}

.project-hero {
  margin: 1rem 0 1.2rem;
  border: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  background: var(--surface);
  border-radius: 0.9rem;
  padding: 0.45rem;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--text) 10%, transparent);
}

.project-hero img {
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: var(--project-hero-max-height);
  object-fit: contain;
  margin: 0 auto;
  border-radius: 0.65rem;
}

.project-caption {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.metric-value {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text);
}

.metric-note {
  color: var(--muted);
}

.table-wrap {
  overflow-x: auto;
}

.detail-table {
  width: 100%;
  min-width: 36rem;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.detail-table th,
.detail-table td {
  border: 1px solid color-mix(in srgb, var(--border) 85%, transparent);
  padding: 0.6rem 0.7rem;
  text-align: left;
  vertical-align: top;
}

.detail-table th {
  background: color-mix(in srgb, var(--surface-muted) 86%, transparent);
}

/* Mentor IA case study layout */
.mentor-case-study {
  display: grid;
  gap: 1rem;
}

.mentor-case-study-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.85fr);
  gap: 1rem;
  align-items: center;
}

.mentor-case-study-hero__content {
  display: grid;
  gap: 0.7rem;
}

.mentor-case-study-hero__media {
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
  background: color-mix(in srgb, var(--surface-muted) 70%, var(--surface));
  border-radius: 0.95rem;
  padding: 0.55rem;
  box-shadow: var(--shadow);
}

.mentor-case-study-hero__media img {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 0.65rem;
}

.mentor-case-study-diagram {
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
  background: var(--surface);
  border-radius: 0.95rem;
  padding: 0.55rem;
  box-shadow: var(--shadow);
}

.mentor-case-study-diagram img {
  width: 100%;
  max-height: 500px;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 0.65rem;
}

/* Humanoid Robot Navigation case study layout */
.humanoid-case-study {
  display: grid;
  gap: 1rem;
}

.humanoid-case-study-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 1rem;
  align-items: center;
}

.humanoid-case-study-hero__content {
  display: grid;
  gap: 0.7rem;
}

.humanoid-case-study-hero__media {
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
  background: color-mix(in srgb, var(--surface-muted) 70%, var(--surface));
  border-radius: 0.95rem;
  padding: 0.55rem;
  box-shadow: var(--shadow);
}

.humanoid-case-study-hero__media img {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 0.65rem;
}

.humanoid-case-study-diagram {
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
  background: var(--surface);
  border-radius: 0.95rem;
  padding: 0.55rem;
  box-shadow: var(--shadow);
}

.humanoid-case-study-diagram img {
  width: 100%;
  max-height: 480px;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 0.65rem;
}

/* Rehabilitation AI Partner case study layout */
.rehab-case-study {
  display: grid;
  gap: 1rem;
}

.rehab-case-study-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.85fr);
  gap: 1rem;
  align-items: center;
}

.rehab-case-study-hero__content {
  display: grid;
  gap: 0.7rem;
}

.rehab-case-study-hero__media {
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
  background: color-mix(in srgb, var(--surface-muted) 70%, var(--surface));
  border-radius: 0.95rem;
  padding: 0.55rem;
  box-shadow: var(--shadow);
}

.rehab-case-study-hero__media img {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 0.65rem;
}

.rehab-case-study-diagram {
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
  background: var(--surface);
  border-radius: 0.95rem;
  padding: 0.55rem;
  box-shadow: var(--shadow);
}

.rehab-case-study-diagram img {
  width: 100%;
  max-height: 480px;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 0.65rem;
}

/* Movie Recommendation System case study layout */
.movie-case-study {
  display: grid;
  gap: 1rem;
}

.movie-case-study-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.85fr);
  gap: 1rem;
  align-items: center;
}

.movie-case-study-hero__content {
  display: grid;
  gap: 0.7rem;
}

.movie-case-study-hero__media {
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
  background: color-mix(in srgb, var(--surface-muted) 70%, var(--surface));
  border-radius: 0.95rem;
  padding: 0.55rem;
  box-shadow: var(--shadow);
}

.movie-case-study-hero__media img {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 0.65rem;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.impact-card {
  display: grid;
  gap: 0.6rem;
  padding: 1.05rem;
}

.impact-card p {
  color: var(--muted);
  line-height: 1.55;
}

.compact-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.text-link {
  color: var(--accent);
  font-weight: 700;
}

.stack-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.2rem;
}

.stack-label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  margin-right: 0.15rem;
}

.stack-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--border));
  background: color-mix(in srgb, var(--accent) 12%, var(--surface));
  color: var(--text);
  font-size: 0.74rem;
  font-weight: 700;
  line-height: 1.2;
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

.footer-row {
  padding: 1rem 0 1.5rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-social {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2rem;
  height: 1.2rem;
}

.footer-social img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 3rem;
  }

  .hero-side {
    justify-items: start;
  }

  .profile-card {
    width: 100%;
    justify-content: flex-start;
  }

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

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

  .project-list-grid {
    grid-template-columns: 1fr 1fr;
  }

  .mentor-case-study-hero {
    grid-template-columns: 1fr;
  }

  .mentor-case-study-hero__media img {
    max-height: 240px;
  }

  .mentor-case-study-diagram img {
    max-height: 460px;
  }

  .humanoid-case-study-hero {
    grid-template-columns: 1fr;
  }

  .humanoid-case-study-hero__media img {
    max-height: 240px;
  }

  .humanoid-case-study-diagram img {
    max-height: 440px;
  }

  .rehab-case-study-hero {
    grid-template-columns: 1fr;
  }

  .rehab-case-study-hero__media img {
    max-height: 240px;
  }

  .rehab-case-study-diagram img {
    max-height: 440px;
  }

  .movie-case-study-hero {
    grid-template-columns: 1fr;
  }

  .movie-case-study-hero__media img {
    max-height: 240px;
  }

  .project-compact-item {
    grid-template-columns: 50px minmax(0, 1fr);
    align-items: start;
  }

  .project-compact-actions {
    grid-column: 2;
    margin-top: 0.15rem;
  }

  .project-compact-summary {
    -webkit-line-clamp: 2;
  }
}

@media (max-width: 640px) {
  .nav-row {
    align-items: flex-start;
  }

  .profile-photo {
    width: min(12rem, 62vw);
  }

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

  .project-list-grid {
    grid-template-columns: 1fr;
  }
}