@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap");

:root {
  color-scheme: light;
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #eef6f5;
  --text: #18202c;
  --muted: #5e6b7c;
  --line: #d9e2ea;
  --line-strong: #b9c8d4;
  --accent: #087f8c;
  --accent-2: #7b5cc9;
  --accent-3: #1f9d63;
  --accent-dark: #075d67;
  --shadow: 0 18px 50px rgba(20, 35, 55, 0.12);
  --radius: 8px;
  --container: 1180px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #101318;
  --surface: #171d24;
  --surface-2: #172321;
  --text: #eef4f6;
  --muted: #a7b3bf;
  --line: #2a3542;
  --line-strong: #3a4b5e;
  --accent: #38c7d7;
  --accent-2: #b39aff;
  --accent-3: #5de09d;
  --accent-dark: #98ecf4;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

body.menu-open {
  overflow: hidden;
}

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

[hidden] {
  display: none !important;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

.container {
  width: min(100% - 36px, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--line);
  transform: translateY(-140%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(18px);
}

.nav-shell {
  width: min(100% - 32px, 1240px);
  min-height: 72px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #ffffff;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.15;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.78rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-menu a,
.theme-toggle,
.nav-toggle {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--muted);
  background: transparent;
  text-decoration: none;
  cursor: pointer;
}

.nav-menu a:hover,
.nav-menu a:focus-visible,
.nav-menu a.is-active,
.theme-toggle:hover,
.theme-toggle:focus-visible,
.nav-toggle:hover,
.nav-toggle:focus-visible {
  color: var(--text);
  border-color: var(--line);
  background: var(--surface);
}

.theme-toggle {
  border-color: var(--line);
  color: var(--text);
}

.nav-toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: min(780px, calc(100vh - 30px));
  overflow: hidden;
  isolation: isolate;
  display: grid;
  align-items: center;
}

.home-hero {
  margin-top: -1px;
}

.hero-bg,
.page-hero::before {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -2;
}

.home-hero .hero-bg {
  background-image: url("../images/hero-research.png");
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 13, 22, 0.88), rgba(5, 13, 22, 0.5) 54%, rgba(5, 13, 22, 0.28)),
    linear-gradient(0deg, rgba(5, 13, 22, 0.45), rgba(5, 13, 22, 0.1));
  z-index: -1;
}

.hero-content {
  max-width: 850px;
  padding: 90px 0 110px;
  color: #ffffff;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow,
.page-hero .eyebrow {
  color: #8be8ef;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2.6rem, 7vw, 5.7rem);
  max-width: 920px;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.1rem);
}

h3 {
  font-size: 1.15rem;
}

.hero-copy,
.page-hero p,
.section-intro p,
.about-band p {
  color: color-mix(in srgb, currentColor 78%, transparent);
  font-size: 1.08rem;
  max-width: 760px;
}

.hero-copy {
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.84);
}

.hero-actions,
.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin-top: 34px;
}

.hero-links {
  margin-top: 22px;
}

.button,
.social-link,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 750;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.button:hover,
.button:focus-visible,
.social-link:hover,
.social-link:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  transform: translateY(-1px);
}

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

.button-secondary {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

.button-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.26);
}

.button-compact {
  min-height: 40px;
  padding: 8px 12px;
  color: var(--text);
  background: var(--surface);
}

.social-link {
  min-height: 38px;
  padding: 8px 12px;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.92rem;
}

.text-link {
  width: fit-content;
  min-height: auto;
  padding: 0;
  border: 0;
  color: var(--accent-dark);
  background: transparent;
}

.section {
  padding: 92px 0;
}

.section-tight {
  padding: 38px 0;
}

.section-muted {
  background: color-mix(in srgb, var(--surface-2) 70%, var(--bg));
  border-block: 1px solid var(--line);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) 1.28fr;
  gap: 54px;
  align-items: start;
}

.section-intro {
  position: sticky;
  top: 104px;
}

.section-intro p {
  color: var(--muted);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 30px;
}

.section-heading-stack {
  align-items: start;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.stat-card,
.theme-card,
.project-card,
.publication-card,
.timeline-item,
.education-card,
.skill-card,
.award-card,
.contact-panel,
.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.stat-card {
  min-height: 116px;
  padding: 18px;
}

.stat-card strong {
  display: block;
  font-size: 1.8rem;
  line-height: 1;
}

.stat-card span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.theme-preview-grid,
.theme-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.theme-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.theme-card {
  padding: 22px;
  min-height: 250px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.theme-card img {
  width: 100%;
  aspect-ratio: 16 / 8;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.theme-card p,
.project-card p,
.publication-card p,
.timeline-item p,
.education-card p,
.skill-card p,
.award-card p,
.contact-panel p {
  color: var(--muted);
  margin: 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 36%, var(--line));
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: color-mix(in srgb, var(--accent-dark) 84%, var(--text));
  font-size: 0.78rem;
  font-weight: 750;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

.project-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.project-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.project-card-body {
  padding: 20px;
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 13px;
}

.project-meta,
.publication-meta,
.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.project-links,
.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
}

.mini-link {
  color: var(--accent-dark);
  font-weight: 800;
  text-decoration: none;
}

.mini-link:hover,
.mini-link:focus-visible {
  text-decoration: underline;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-button {
  min-height: 38px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-weight: 750;
  cursor: pointer;
}

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

.page-hero {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  display: grid;
  align-items: end;
  color: #ffffff;
  isolation: isolate;
}

.page-hero::before {
  content: "";
  background-image: url("../images/hero-research.png");
}

.research-hero::before {
  background-image: url("../images/hardware-security.png");
}

.publications-hero::before {
  background-image: url("../images/hdc-anomaly.png");
}

.experience-hero::before {
  background-image: url("../images/llm-iot.png");
}

.contact-hero::before {
  background-image: url("../images/clinical-ai.png");
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(5, 13, 22, 0.88), rgba(5, 13, 22, 0.46)), linear-gradient(0deg, rgba(5, 13, 22, 0.68), transparent);
}

.page-hero-content {
  padding: 112px 0 70px;
}

.page-hero h1 {
  font-size: clamp(2.2rem, 6vw, 4.6rem);
}

.page-hero p {
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.82);
}

.publication-controls {
  display: grid;
  gap: 14px;
  justify-items: end;
}

.search-box input {
  width: min(100%, 420px);
  min-height: 42px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--surface);
}

.publication-list {
  display: grid;
  gap: 14px;
}

.publication-card {
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: start;
}

.publication-card h3 {
  margin-bottom: 8px;
}

.publication-card .tag-row {
  margin-top: 14px;
}

.publication-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent-2) 18%, transparent);
  color: var(--accent-2);
  font-size: 0.78rem;
  font-weight: 850;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(240px, 0.42fr) 1fr;
  gap: 54px;
}

.timeline {
  position: relative;
  display: grid;
  gap: 18px;
}

.timeline-item {
  padding: 22px;
}

.timeline-item ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.education-grid,
.skills-grid,
.award-grid {
  display: grid;
  gap: 16px;
}

.education-card,
.skill-card,
.award-card {
  padding: 20px;
}

.skills-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.skill-card .tag-row {
  margin-top: 14px;
}

.award-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.award-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.award-card h3,
.award-card p {
  margin: 0;
}

.award-media-link {
  display: block;
  margin-bottom: 4px;
}

.award-media {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfaf7;
}

.about-band {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 36px;
  align-items: center;
}

.profile-photo {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid var(--surface);
  box-shadow: var(--shadow);
}

.profile-photo-large {
  width: 180px;
  height: 180px;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.4fr) 1fr;
  gap: 24px;
  align-items: start;
}

.contact-panel,
.contact-form {
  padding: 24px;
}

.contact-links {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.contact-link {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
}

.contact-link span {
  color: var(--muted);
}

.contact-form {
  display: grid;
  gap: 18px;
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-weight: 750;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
}

.contact-form textarea {
  resize: vertical;
}

.site-footer {
  padding: 46px 0 28px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.footer-grid,
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.footer-grid {
  align-items: start;
}

.footer-grid p {
  max-width: 600px;
  margin: 8px 0 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: end;
  gap: 12px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 750;
}

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

.footer-bottom {
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.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: 980px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: fixed;
    inset: 72px 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 18px;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  body.menu-open .nav-menu {
    display: flex;
  }

  .nav-menu a,
  .theme-toggle {
    justify-content: flex-start;
  }

  .hero {
    min-height: 720px;
  }

  .hero-content {
    padding-top: 74px;
  }

  .section-grid,
  .two-column,
  .contact-layout,
  .about-band {
    grid-template-columns: 1fr;
  }

  .section-intro {
    position: static;
  }

  .theme-grid,
  .project-grid,
  .project-grid-featured,
  .skills-grid,
  .award-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .publication-controls {
    justify-items: start;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .brand small {
    display: none;
  }

  .hero {
    min-height: 760px;
  }

  .hero-content,
  .page-hero-content {
    padding-bottom: 58px;
  }

  .hero-actions,
  .hero-links,
  .section-heading,
  .footer-grid,
  .footer-bottom {
    align-items: stretch;
    flex-direction: column;
  }

  .button,
  .social-link {
    width: 100%;
  }

  .section {
    padding: 70px 0;
  }

  .theme-preview-grid,
  .theme-grid,
  .project-grid,
  .project-grid-featured,
  .skills-grid,
  .award-grid,
  .stat-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-links {
    justify-content: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* Second-pass visual refresh: warmer, lighter, and less template-like. */
:root {
  color-scheme: light;
  --bg: #fbf8f2;
  --surface: #ffffff;
  --surface-2: #eef8f6;
  --text: #1f2933;
  --muted: #61717f;
  --line: #dbe8e6;
  --line-strong: #bad6d2;
  --accent: #0a8f8f;
  --accent-2: #d86f45;
  --accent-3: #2f9b68;
  --accent-dark: #08716f;
  --shadow: 0 16px 38px rgba(31, 61, 69, 0.1);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #151718;
  --surface: #1d2224;
  --surface-2: #202b29;
  --text: #f4f1e8;
  --muted: #bbc7c5;
  --line: #344140;
  --line-strong: #4a5d5b;
  --accent: #5ed4cd;
  --accent-2: #ffae82;
  --accent-3: #81d9a7;
  --accent-dark: #b8f2ed;
}

body {
  background:
    radial-gradient(circle at 8% 0%, rgba(10, 143, 143, 0.08), transparent 28rem),
    radial-gradient(circle at 90% 18%, rgba(216, 111, 69, 0.1), transparent 24rem),
    var(--bg);
}

.site-header {
  background: color-mix(in srgb, var(--surface) 90%, transparent);
}

.brand-mark {
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
}

.hero {
  min-height: min(720px, calc(100vh - 20px));
}

.hero-bg {
  opacity: 0.2;
  filter: saturate(0.95);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(251, 248, 242, 0.98), rgba(251, 248, 242, 0.86) 50%, rgba(238, 248, 246, 0.62)),
    linear-gradient(0deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.16));
}

.hero-content {
  color: var(--text);
}

.hero .eyebrow,
.page-hero .eyebrow {
  color: var(--accent-dark);
}

.hero-copy {
  color: var(--muted);
}

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

.button-secondary,
.button-ghost,
.social-link {
  background: var(--surface);
  border-color: var(--line-strong);
  color: var(--text);
}

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

.page-hero {
  min-height: 360px;
  color: var(--text);
  background:
    linear-gradient(135deg, rgba(238, 248, 246, 0.92), rgba(255, 250, 242, 0.96)),
    var(--bg);
  border-bottom: 1px solid var(--line);
}

.page-hero::before {
  inset: 24px 0 0 46%;
  opacity: 0.23;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center right;
  z-index: -1;
}

.page-hero::after {
  background: linear-gradient(90deg, rgba(251, 248, 242, 0.95), rgba(251, 248, 242, 0.78) 46%, rgba(255, 255, 255, 0));
}

.projects-hero::before {
  background-image: url("../images/thesis-localization.png");
}

.publications-hero::before {
  background-image: url("../images/csatdta.png");
}

.experience-hero::before {
  background-image: url("../images/Reverse engineering.jpg");
}

.contact-hero::before {
  background-image: url("../images/profile.jpg");
  opacity: 0.18;
}

.page-hero p {
  color: var(--muted);
}

.section-muted {
  background: color-mix(in srgb, var(--surface-2) 78%, white);
}

.section-heading.section-heading-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.section-heading.section-heading-stack h2 {
  max-width: 720px;
}

.section-note {
  max-width: 720px;
  margin: 10px 0 0;
  color: var(--muted);
}

.project-controls,
.publication-controls {
  width: 100%;
  display: grid;
  gap: 14px;
  justify-items: start;
}

.search-box,
.search-box input {
  width: min(100%, 520px);
}

.filter-row {
  gap: 10px;
}

.filter-button {
  background: #ffffff;
  color: #526273;
  box-shadow: 0 6px 18px rgba(31, 61, 69, 0.06);
}

.filter-button.is-active,
.filter-button:hover,
.filter-button:focus-visible {
  background: color-mix(in srgb, var(--accent) 11%, #ffffff);
  color: var(--accent-dark);
  border-color: var(--accent);
}

.result-count {
  margin: -12px 0 22px;
  color: var(--muted);
  font-weight: 750;
}

.project-card,
.theme-card,
.publication-card,
.timeline-item,
.education-card,
.skill-card,
.award-card,
.contact-panel,
.contact-form,
.stat-card {
  box-shadow: var(--shadow);
}

.project-card {
  overflow: hidden;
}

.project-card img {
  aspect-ratio: 16 / 10;
  object-fit: contain;
  padding: 12px;
  background: #ffffff;
}

.theme-card img {
  object-fit: contain;
  padding: 10px;
  background: #ffffff;
}

.tag {
  background: color-mix(in srgb, var(--accent) 9%, #ffffff);
}

.research-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.research-callout p {
  max-width: 720px;
  color: var(--muted);
}

@media (max-width: 980px) {
  .page-hero::before {
    inset: 30% 0 0 18%;
    opacity: 0.12;
  }

  .research-callout {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 680px) {
  .hero {
    min-height: 700px;
  }

  .filter-button {
    min-height: 36px;
    padding: 7px 11px;
    font-size: 0.92rem;
  }
}

/* Light industry-facing AI/ML portfolio template, no dark-mode dependency. */
:root,
:root[data-theme="dark"] {
  color-scheme: light;
  --bg: #fbfaf7;
  --surface: #ffffff;
  --surface-2: #f0f7f4;
  --text: #1f2a37;
  --muted: #637487;
  --line: #dce7e2;
  --line-strong: #b7d3cc;
  --accent: #138f86;
  --accent-2: #c86d42;
  --accent-3: #3c8f62;
  --accent-dark: #0c6f69;
  --shadow: 0 14px 35px rgba(36, 64, 75, 0.09);
}

body {
  background:
    linear-gradient(180deg, rgba(240, 247, 244, 0.8), rgba(251, 250, 247, 0) 420px),
    var(--bg);
}

.site-header {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
}

.nav-shell {
  min-height: 78px;
}

.nav-menu a {
  font-size: 0.98rem;
}

.nav-menu a.is-active {
  background: #f1f8f6;
  border-color: var(--line-strong);
  color: var(--accent-dark);
}

.hero {
  min-height: auto;
  padding: 78px 0 64px;
  background: linear-gradient(135deg, #fffaf2, #eff8f5);
  border-bottom: 1px solid var(--line);
}

.hero-bg,
.hero-overlay {
  display: none;
}

.hero-content {
  max-width: none;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.42fr);
  gap: 44px;
  align-items: center;
  color: var(--text);
}

.hero-text {
  max-width: 900px;
}

h1 {
  font-size: clamp(2.5rem, 5.8vw, 5rem);
}

.hero-copy {
  max-width: 820px;
  color: var(--muted);
}

.hero-profile-card {
  min-height: 420px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.78)),
    url("../images/thesis-localization.png") center / cover;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-profile-card strong {
  font-size: 1.35rem;
}

.hero-profile-card span {
  color: var(--muted);
}

.hero-domain-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.hero-domain-list span {
  min-height: 28px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 750;
}

.button-secondary,
.button-ghost,
.social-link {
  border-color: var(--line-strong);
  color: var(--text);
  background: #ffffff;
}

.page-hero {
  min-height: 330px;
  align-items: center;
  color: var(--text);
  background: linear-gradient(135deg, #fffaf2, #edf8f5);
  border-bottom: 1px solid var(--line);
}

.page-hero-content {
  padding: 72px 0;
}

.page-hero::before {
  inset: 18px 3% 18px 52%;
  opacity: 0.2;
  background-size: contain;
  background-repeat: no-repeat;
}

.page-hero::after {
  background: linear-gradient(90deg, rgba(255, 250, 242, 0.98), rgba(255, 250, 242, 0.78) 48%, rgba(255, 250, 242, 0.08));
}

.page-hero p {
  max-width: 760px;
  color: var(--muted);
}

.section {
  padding: 78px 0;
}

.section-muted {
  background: #f3f8f5;
}

.stat-card,
.theme-card,
.project-card,
.publication-card,
.timeline-item,
.education-card,
.skill-card,
.award-card,
.contact-panel,
.contact-form,
.domain-card,
.experience-highlight-card {
  border-radius: 12px;
}

.domain-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0 24px;
}

.domain-card {
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.domain-card strong,
.domain-card span {
  display: block;
}

.domain-card strong {
  color: var(--accent-dark);
}

.domain-card span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.95rem;
}

.role-fit-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.domain-card .tag-row {
  margin-top: 14px;
}

.domain-card .tag {
  display: inline-flex;
  margin-top: 0;
  font-size: 0.82rem;
}

.project-controls,
.publication-controls {
  max-width: 620px;
}

.project-filter-section {
  padding: var(--space-6) 0 var(--space-5);
  border-bottom: 1px solid var(--claude-rule);
}

.project-filter-section .result-count {
  margin: 18px 0 0;
}

.project-deep-dive-section {
  background: #fffdf9;
}

.project-library-section {
  padding-top: var(--space-7);
}

.project-library-heading {
  margin-bottom: 28px;
}

.project-deep-dive-grid {
  display: grid;
  gap: 18px;
}

.project-deep-dive {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.project-deep-dive-featured {
  grid-column: 1 / -1;
}

.deep-dive-figure {
  margin: 0 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f7fbfa;
  overflow: hidden;
}

.deep-dive-figure a {
  display: block;
}

.deep-dive-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  max-height: 460px;
  object-fit: contain;
  padding: 18px;
}

.project-deep-dive-featured .deep-dive-figure img {
  aspect-ratio: 16 / 6.5;
  max-height: 520px;
}

.deep-dive-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  background: #ffffff;
}

.project-deep-dive h3 {
  margin: 10px 0;
  color: var(--text);
}

.project-deep-dive p {
  margin: 0;
  color: var(--muted);
}

.project-deep-dive p + p {
  margin-top: 12px;
}

.project-deep-dive .project-links,
.project-deep-dive .tag-row {
  margin-top: 16px;
}

.deep-dive-metric-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.deep-dive-metric-row span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #eef8f6;
  color: var(--accent-dark);
  font-size: 0.84rem;
  font-weight: 800;
}

.filter-row {
  display: flex;
}

.search-box input {
  width: min(100%, 620px);
  background: #ffffff;
}

.project-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

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

.project-card img {
  aspect-ratio: 16 / 8.5;
  object-fit: contain;
  padding: 14px;
}

.publication-card {
  grid-template-columns: 1fr minmax(76px, auto);
  box-shadow: none;
  border-left: 5px solid color-mix(in srgb, var(--accent) 38%, var(--line));
}

.publication-card h3 a {
  color: inherit;
  text-decoration: none;
}

.publication-card h3 a:hover,
.publication-card h3 a:focus-visible {
  color: var(--accent-dark);
  text-decoration: underline;
}

.cite-count {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: #ffffff;
  font-size: 0.85rem;
  font-weight: 750;
}

.publication-abstract {
  margin-top: 14px;
  color: var(--muted);
}

.publication-abstract summary {
  color: var(--accent-dark);
  cursor: pointer;
  font-weight: 800;
}

.publication-refresh-note {
  margin-top: 24px;
}

.publication-list-compact .publication-card:nth-child(n + 5) {
  display: none;
}

.experience-highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.experience-highlight-card {
  padding: 22px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.experience-highlight-card > span {
  color: var(--accent-dark);
  font-weight: 800;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.experience-highlight-card h3 {
  margin-top: 10px;
}

.experience-highlight-card p {
  margin: 10px 0 0;
  color: var(--muted);
}

.timeline {
  gap: 14px;
}

.timeline-item {
  box-shadow: none;
  border-left: 5px solid color-mix(in srgb, var(--accent-3) 40%, var(--line));
}

.timeline-item ul {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 0;
  list-style: none;
}

.timeline-item li {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfaf7;
}

@media (max-width: 980px) {
  .hero-content,
  .domain-grid,
  .experience-highlight-grid,
  .project-deep-dive-grid,
  .project-deep-dive-featured {
    grid-template-columns: 1fr;
  }

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

  .timeline-item ul {
    grid-template-columns: 1fr;
  }

  .project-deep-dive-featured {
    display: block;
  }

  .project-deep-dive-featured .deep-dive-figure img,
  .deep-dive-figure img {
    aspect-ratio: 4 / 3;
    max-height: 280px;
  }
}

@media (max-width: 680px) {
  .hero {
    padding: 52px 0;
  }

  .hero-profile-card {
    min-height: 320px;
  }
}

/* Claude-sourced editorial sections requested for recruiter-facing copy. */
:root {
  --claude-bg: #faf7f2;
  --claude-bg-elev: #f3eee5;
  --claude-bg-card: #fffdf9;
  --claude-ink: #1a1814;
  --claude-ink-soft: #3d3a33;
  --claude-ink-muted: #6b665c;
  --claude-rule: #e2dccf;
  --claude-rule-strong: #c9c1ae;
  --claude-accent: #1e3a5f;
  --claude-accent-hover: #2c5a91;
  --claude-accent-soft: #e8eef5;
  --display: "Fraunces", "Times New Roman", serif;
  --body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "IBM Plex Mono", "Menlo", monospace;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;
  --radius-sm: 6px;
  --radius-lg: 14px;
}

.claude-hero,
.page-head,
.claude-about-section,
.claude-project-search,
.claude-trust-section {
  background: var(--claude-bg);
  color: var(--claude-ink);
  font-family: var(--body);
}

.claude-hero {
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--claude-rule);
}

.claude-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.55fr);
  gap: var(--space-7);
  align-items: center;
}

.claude-hero .hero-profile-card {
  background:
    linear-gradient(180deg, rgba(255, 253, 249, 0.92), rgba(255, 253, 249, 0.82)),
    url("../images/thesis-localization.png") center / cover;
}

.availability {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: fit-content;
  max-width: 100%;
  padding: 0.4rem 0.85rem;
  background: var(--claude-bg-card);
  border: 1px solid var(--claude-rule-strong);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--claude-ink-soft);
  margin-bottom: var(--space-5);
}

.availability::before {
  content: "";
  width: 8px;
  height: 8px;
  background: #16a34a;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.12);
}

.claude-hero .eyebrow,
.page-head .eyebrow,
.claude-about-section .eyebrow,
.claude-trust-section .eyebrow {
  display: block;
  color: var(--claude-ink-muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  margin-bottom: var(--space-3);
}

.claude-hero .eyebrow::before,
.page-head .eyebrow::before,
.claude-about-section .eyebrow::before,
.claude-trust-section .eyebrow::before {
  content: "-";
  margin-right: 0.5em;
  color: var(--claude-rule-strong);
}

.hero-title,
.page-head h1,
.about-grid h2,
.cta-banner h2,
.trust-copy h2 {
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.05;
  color: var(--claude-ink);
}

.hero-title {
  max-width: 780px;
  margin: 0 0 var(--space-5);
  font-size: clamp(3rem, 5.5vw, 4.4rem);
}

.hero-title em {
  color: var(--claude-accent);
  font-style: italic;
}

.hero-lead {
  max-width: 56ch;
  color: var(--claude-ink-soft);
  font-size: 1.2rem;
  line-height: 1.55;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  margin-top: var(--space-5);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.65rem 1.2rem;
  border: 1px solid var(--claude-rule-strong);
  border-radius: var(--radius-sm);
  color: var(--claude-ink);
  background: var(--claude-bg-card);
  font-family: var(--body);
  font-weight: 600;
  text-decoration: none;
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--claude-ink);
  color: var(--claude-ink);
  text-decoration: none;
}

.btn-primary {
  background: var(--claude-ink);
  border-color: var(--claude-ink);
  color: var(--claude-bg);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--claude-accent);
  border-color: var(--claude-accent);
  color: var(--claude-bg);
}

.btn-ghost {
  background: transparent;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.hero-tags span {
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--claude-rule);
  border-radius: 999px;
  color: var(--claude-ink-muted);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.page-head {
  padding: var(--space-8) 0 var(--space-6);
  border-bottom: 1px solid var(--claude-rule);
}

.page-head h1 {
  max-width: 980px;
  margin-bottom: var(--space-3);
  font-size: clamp(2.7rem, 5vw, 4.2rem);
}

.page-head .lead {
  max-width: 60ch;
  color: var(--claude-ink-soft);
  font-size: 1.15rem;
  line-height: 1.6;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: var(--space-7);
  align-items: start;
}

.about-grid h2 {
  font-size: clamp(2rem, 3.4vw, 2.55rem);
}

.kv-list {
  list-style: none;
  padding: 0;
  margin: var(--space-5) 0 0;
  font-size: 0.9rem;
}

.kv-list li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: var(--space-4);
  padding: 0.75rem 0;
  border-top: 1px solid var(--claude-rule);
}

.kv-list li:last-child {
  border-bottom: 1px solid var(--claude-rule);
}

.kv-list .key {
  color: var(--claude-ink-muted);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.claude-about-section .lead,
.trust-copy p {
  color: var(--claude-ink-soft);
  font-size: 1.08rem;
  line-height: 1.62;
}

.callout {
  margin-top: var(--space-5);
  padding: 1.1rem 1.4rem;
  border-left: 3px solid var(--claude-accent);
  border-radius: var(--radius-sm);
  background: var(--claude-accent-soft);
}

.callout p {
  margin: 0;
  color: var(--claude-ink-soft);
}

.cta-banner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-6);
  align-items: center;
  margin-top: var(--space-7);
  padding: var(--space-7);
  border-radius: var(--radius-lg);
  background: var(--claude-ink);
  color: var(--claude-bg);
}

.cta-banner h2 {
  color: var(--claude-bg);
  margin-bottom: var(--space-3);
}

.cta-banner p {
  color: rgba(250, 247, 242, 0.75);
  margin: 0;
}

.cta-banner .btn-row {
  justify-content: flex-end;
  margin-top: 0;
}

.cta-banner .btn-primary {
  background: var(--claude-bg);
  border-color: var(--claude-bg);
  color: var(--claude-ink);
}

.cta-banner .btn-ghost {
  color: var(--claude-bg);
  border-color: rgba(250, 247, 242, 0.3);
}

.claude-project-search .search-bar {
  display: flex;
  width: 100%;
  margin-bottom: var(--space-6);
}

.claude-project-search .search-bar input {
  flex: 1;
  width: 100%;
  min-height: 46px;
  padding: 0.75rem 1rem;
  border: 1px solid var(--claude-rule-strong);
  border-radius: var(--radius-sm);
  background: var(--claude-bg-card);
  color: var(--claude-ink);
}

.publication-controls.claude-project-search {
  max-width: none;
  width: 100%;
}

.claude-project-search .search-bar input:focus {
  outline: 2px solid var(--claude-accent);
  outline-offset: 1px;
  border-color: var(--claude-accent);
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.chip {
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--claude-rule-strong);
  border-radius: 999px;
  background: var(--claude-bg-card);
  color: var(--claude-ink-soft);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.78rem;
}

.chip:hover,
.chip:focus-visible {
  border-color: var(--claude-ink);
  color: var(--claude-ink);
}

.chip.is-active {
  background: var(--claude-ink);
  border-color: var(--claude-ink);
  color: var(--claude-bg);
}

.trust-copy {
  max-width: 60ch;
}

.trust-copy h2 {
  max-width: 13ch;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
}

.trust-copy a {
  color: var(--claude-accent);
}

.contact-page {
  background: var(--claude-bg);
}

body[data-page="contact"] .site-header {
  border-bottom: 1px solid var(--claude-rule);
  background: var(--claude-bg);
  backdrop-filter: none;
}

body[data-page="contact"] .brand-mark {
  width: 36px;
  height: 36px;
  border-color: var(--claude-ink);
  border-radius: 999px;
  background: var(--claude-ink);
  color: var(--claude-bg);
}

body[data-page="contact"] .brand small {
  color: var(--claude-ink-muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

body[data-page="contact"] .nav-menu a {
  border-radius: 0;
  color: var(--claude-ink-soft);
  background: transparent;
}

body[data-page="contact"] .nav-menu a:hover,
body[data-page="contact"] .nav-menu a:focus-visible,
body[data-page="contact"] .nav-menu a.is-active {
  border-color: transparent;
  border-bottom-color: var(--claude-ink);
  color: var(--claude-ink);
  background: transparent;
}

.contact-simple-grid {
  align-items: start;
}

.contact-page .kv-list li {
  grid-template-columns: 110px minmax(0, 1fr);
}

.contact-page .kv-list a,
.contact-page .kv-list span:not(.key) {
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.contact-page .form {
  display: grid;
  width: 100%;
  max-width: 580px;
  gap: var(--space-4);
}

.contact-page .form p {
  margin: 0;
  color: var(--claude-ink-muted);
}

.contact-page .field {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.45rem;
}

.contact-page .field span {
  color: var(--claude-ink-muted);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact-page .field input,
.contact-page .field select,
.contact-page .field textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--claude-rule-strong);
  border-radius: var(--radius-sm);
  background: var(--claude-bg-card);
  color: var(--claude-ink);
  font: inherit;
  padding: 0.78rem 0.9rem;
}

.contact-page .field textarea {
  min-height: 130px;
  resize: vertical;
}

.contact-page .field input:focus,
.contact-page .field select:focus,
.contact-page .field textarea:focus {
  border-color: var(--claude-accent);
  outline: 2px solid var(--claude-accent);
  outline-offset: 1px;
}

.contact-page .btn-primary {
  width: 100%;
}

.teaching-card-stack {
  display: grid;
  gap: 18px;
}

.teaching-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.teaching-card h3 {
  margin: 8px 0 12px;
}

.teaching-card p {
  margin: 0;
  color: var(--muted);
}

.teaching-card p + p {
  margin-top: 12px;
}

.teaching-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.teaching-list li {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfaf7;
  color: var(--muted);
}

.teaching-module-grid,
.teaching-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.teaching-module-grid .domain-card:first-child {
  grid-column: 1 / -1;
}

.leadership-links {
  margin-top: 18px;
}

.research-statement-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.62fr) minmax(0, 1fr);
  gap: var(--space-7);
  align-items: start;
}

.research-statement-grid h2 {
  font-family: var(--display);
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.05;
  color: var(--claude-ink);
}

.research-statement-copy {
  max-width: 72ch;
}

.research-statement-copy p {
  margin: 0;
  color: var(--claude-ink-soft);
  font-size: 1.05rem;
  line-height: 1.7;
}

.research-statement-copy p + p {
  margin-top: 1rem;
}

.research-direction-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: var(--space-7);
}

.site-footer {
  margin-top: var(--space-8);
  padding: var(--space-7) 0 var(--space-5);
  border-top: 1px solid var(--claude-rule);
  background: var(--claude-bg-elev);
  color: var(--claude-ink);
  font-family: var(--body);
}

.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--claude-rule);
}

.site-footer .footer-grid p {
  max-width: 520px;
  color: var(--claude-ink-muted);
  font-size: 0.92rem;
}

.site-footer .footer-grid h4 {
  margin: 0 0 var(--space-3);
  color: var(--claude-ink-muted);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-footer .footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer .footer-grid li {
  padding: 0.2rem 0;
}

.site-footer .footer-grid li a {
  color: var(--claude-ink-soft);
  font-size: 0.92rem;
}

.site-footer .footer-email {
  margin-top: 0.75rem;
  color: var(--claude-ink-muted);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.site-footer .footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-top: var(--space-5);
  color: var(--claude-ink-muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

@media (max-width: 980px) {
  .claude-hero-grid,
  .about-grid,
  .cta-banner,
  .site-footer .footer-grid {
    grid-template-columns: 1fr;
  }

  .cta-banner .btn-row {
    justify-content: flex-start;
  }

  .teaching-list,
  .teaching-module-grid,
  .teaching-detail-grid,
  .research-statement-grid,
  .research-direction-grid {
    grid-template-columns: 1fr;
  }

  .teaching-module-grid .domain-card:first-child {
    grid-column: auto;
  }
}

@media (max-width: 680px) {
  .claude-hero {
    padding: var(--space-6) 0;
  }

  .hero-title {
    font-size: clamp(2.6rem, 14vw, 4rem);
  }

  .page-head h1 {
    font-size: clamp(2.25rem, 10vw, 2.8rem);
  }

  .page-head .lead {
    font-size: 1.02rem;
  }

  .kv-list li {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .cta-banner {
    padding: var(--space-5);
  }
}