@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Space+Mono:ital,wght@0,400;0,700;1,400&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --bg:          #F8FAFF;
  --bg-alt:      #EFF4FF;
  --bg-card:     #FFFFFF;
  --navy:        #0F1E3D;
  --navy-mid:    #1A3260;
  --accent:      #1D4ED8;
  --accent-light:#3B82F6;
  --accent-glow: rgba(29,78,216,0.12);
  --accent-pale: #EFF6FF;
  --cyan:        #0EA5E9;
  --green:       #10B981;
  --text:        #0F1E3D;
  --text-muted:  #64748B;
  --text-light:  #94A3B8;
  --border:      #DBEAFE;
  --border-mid:  #BFDBFE;
  --shadow-sm:   0 1px 3px rgba(15,30,61,0.08), 0 1px 2px rgba(15,30,61,0.04);
  --shadow-md:   0 4px 16px rgba(15,30,61,0.10), 0 2px 6px rgba(15,30,61,0.06);
  --shadow-lg:   0 12px 40px rgba(15,30,61,0.14), 0 4px 12px rgba(15,30,61,0.08);
  --radius:      12px;
  --radius-lg:   18px;
  --mono:        'Space Mono', monospace;
  --display:     'Space Grotesk', sans-serif;
  --body:        'Inter', sans-serif;
  --transition:  0.22s cubic-bezier(0.4,0,0.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(29,78,216,0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(14,165,233,0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  height: 68px;
  background: rgba(248,250,255,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: rgba(248,250,255,0.98);
  box-shadow: var(--shadow-md);
}

.nav-logo {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
}
.nav-logo span { color: var(--text-muted); font-weight: 400; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-family: var(--display);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--accent); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

.nav-resume-btn {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent) !important;
  border: 1.5px solid var(--accent);
  padding: 0.4rem 1rem;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition) !important;
  font-weight: 700;
}
.nav-resume-btn:hover {
  background: var(--accent) !important;
  color: #fff !important;
}
.nav-resume-btn::after { display: none !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  position: fixed;
  top: 68px; left: 0; right: 0;
  background: rgba(248,250,255,0.99);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  z-index: 99;
  padding: 1.5rem 2.5rem 2rem;
  flex-direction: column;
  gap: 1.2rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}
.mobile-nav a:hover { color: var(--accent); }

.section {
  position: relative;
  z-index: 1;
  padding: 6rem 2.5rem;
  max-width: 1100px;
  margin: 0 auto;
}
.section-eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.section-eyebrow::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.section-title {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 0.75rem;
  color: var(--navy);
}
.section-rule {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  border-radius: 2px;
  margin-bottom: 2.5rem;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 2.5rem;
  line-height: 1.75;
}

#about    { background: var(--bg-alt); }
#research { background: var(--bg-alt); }

section {
  position: relative;
  z-index: 1;
}

#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 68px;
  max-width: 1100px;
  margin: 0 auto;
  padding-left: 2.5rem;
  padding-right: 2.5rem;
  position: relative;
  z-index: 1;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 4rem;
  width: 100%;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.hero-name {
  font-family: var(--display);
  font-size: clamp(3.2rem, 6vw, 5.2rem);
  font-weight: 700;
  line-height: 1.0;
  margin-bottom: 0.6rem;
  letter-spacing: -0.03em;
  color: var(--navy);
}
.hero-name .accent {
  color: var(--accent);
  position: relative;
}
.hero-tagline {
  font-family: var(--display);
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  font-weight: 400;
  margin-bottom: 1.8rem;
  line-height: 1.6;
}
.hero-tagline strong {
  color: var(--navy);
  font-weight: 600;
}

.hero-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.2rem;
}
.skill-pill {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--accent);
  background: var(--accent-pale);
  border: 1px solid var(--border-mid);
  padding: 0.3rem 0.75rem;
  border-radius: 50px;
  letter-spacing: 0.04em;
  font-weight: 700;
  transition: background var(--transition), border-color var(--transition);
}
.skill-pill:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn-primary {
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.9rem;
  color: #fff;
  background: var(--accent);
  padding: 0.8rem 1.8rem;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 16px rgba(29,78,216,0.3);
}
.btn-primary:hover {
  background: var(--navy-mid);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(29,78,216,0.35);
}
.btn-outline {
  font-family: var(--display);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--accent);
  border: 1.5px solid var(--accent);
  padding: 0.8rem 1.8rem;
  border-radius: var(--radius);
  background: transparent;
  transition: border-color var(--transition), background var(--transition), transform var(--transition), color var(--transition);
}
.btn-outline:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.hero-image-col {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}
.hero-img-frame {
  position: relative;
  width: 100%;
  max-width: 320px;
}
.hero-img-frame::before {
  content: '';
  position: absolute;
  bottom: -12px;
  right: -12px;
  width: 100%;
  height: 100%;
  border: 2px solid var(--border-mid);
  border-radius: 16px;
  z-index: 0;
}
.hero-img-frame::after {
  content: '';
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 55%;
  height: 55%;
  background: radial-gradient(circle, rgba(29,78,216,0.15) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(32px);
  z-index: 0;
}
.hero-img-frame img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.about-text {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding-top: 0.5rem;
}
.about-text p {
  color: var(--text-muted);
  font-size: 0.97rem;
  line-height: 1.85;
  margin-bottom: 1.1rem;
}
.about-text p:last-child { margin-bottom: 0; }
.about-text strong { color: var(--navy); font-weight: 600; }

.about-images {
  display: flex;
  flex-direction: column;
  position: relative;
}
.about-collage {
  position: relative;
  width: 100%;
}
.about-collage::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  width: 100%;
  height: 100%;
  border: 2px solid var(--border-mid);
  border-radius: var(--radius-lg);
  z-index: 0;
}
.about-img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  object-fit: contain;
  display: block;
}
.about-img-collage {
  width: 100%;
  height: auto;
}

#internships {
  border-top: 1px solid var(--border);
}
.timeline {
  position: relative;
  padding-left: 2.5rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--border));
  border-radius: 2px;
}
.timeline-item {
  position: relative;
  margin-bottom: 3rem;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -2.5rem;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 2.5px solid var(--accent);
  box-shadow: 0 0 0 4px rgba(29,78,216,0.1);
}
.timeline-period {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  font-weight: 700;
}

.timeline-role-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 1rem;
  margin-bottom: 0.6rem;
}
.timeline-role {
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.2rem;
}
.timeline-company {
  font-family: var(--display);
  font-size: 0.95rem;
  color: var(--accent);
  font-weight: 500;
}

.company-logo {
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
  padding-top: 0.25rem;
}
.company-logo img {
  height: auto;
  width: 250px;
  max-width: 300px;
  object-fit: contain;
  display: block;
  filter: brightness(1);
  transition: filter var(--transition);
}
.company-logo img:hover {
  filter: brightness(1.1);
}

.timeline-desc {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  margin-top: 0.75rem;
  max-width: 640px;
}
.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tag {
  font-family: var(--mono);
  font-size: 0.67rem;
  color: var(--accent);
  background: var(--accent-pale);
  border: 1px solid var(--border-mid);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.cta-button-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.88rem;
  color: #fff;
  background: var(--accent);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  margin-top: 1.25rem;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 16px rgba(29,78,216,0.25);
}
.cta-button-inline:hover {
  background: var(--navy-mid);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(29,78,216,0.3);
}
.cta-button-inline svg {
  transition: transform var(--transition);
}
.cta-button-inline:hover svg {
  transform: translateX(3px);
}

#research {
  border-top: 1px solid var(--border);
}
.research-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.research-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 2rem 2rem 2.5rem;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  overflow: hidden;
}
.research-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--accent), var(--cyan));
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}
.research-card:hover {
  border-color: var(--accent-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.research-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.research-lab-badge {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--accent);
  background: var(--accent-pale);
  border: 1px solid var(--border-mid);
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  letter-spacing: 0.1em;
  font-weight: 700;
}
.research-status {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--green);
  background: rgba(16,185,129,0.08);
  border: 1px solid rgba(16,185,129,0.25);
  padding: 0.25rem 0.7rem;
  border-radius: 50px;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
}
.research-status::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  display: inline-block;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.8); }
}
.research-title {
  font-family: var(--display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.3rem;
}
.research-title-link {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
.research-title-link:hover { color: var(--accent); }
.research-title-link::after {
  content: ' (external)';
  font-size: 0.75em;
  color: var(--accent);
  opacity: 0.7;
}
.research-affiliation {
  font-family: var(--display);
  font-size: 0.88rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1rem;
}
.research-desc {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  max-width: 780px;
}
.research-desc:last-of-type { margin-bottom: 1.2rem; }
.research-desc strong { color: var(--navy); font-weight: 600; }
.research-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.6rem;
}
.research-detail {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
}
.research-detail-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
}
.research-detail-val {
  font-size: 0.84rem;
  color: var(--navy);
  font-weight: 600;
}

#projects {
  border-top: 1px solid var(--border);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}
.project-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
}
.project-card:hover {
  border-color: var(--accent-light);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.project-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--bg-alt);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-light);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.project-thumb-icon { font-size: 2.4rem; }
.project-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(29,78,216,0.05));
  pointer-events: none;
  z-index: 1;
}
.project-thumb-video {
  padding: 0;
  background: #000;
}
.project-thumb-video video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.project-thumb-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
  z-index: 0;
}
.project-thumb-video:has(video) .project-thumb-fallback { display: none; }

.project-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.project-label {
  font-family: var(--mono);
  font-size: 0.63rem;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  font-weight: 700;
}
.project-title {
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--navy);
}
.project-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 1.2rem;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.2rem;
}
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  font-weight: 700;
  transition: gap var(--transition);
}
.project-link:hover { gap: 0.65rem; }

#contact {
  border-top: 1px solid var(--border);
}
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
.contact-info p {
  color: var(--text-muted);
  font-size: 0.97rem;
  line-height: 1.75;
  margin-bottom: 2rem;
}
.contact-socials {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.social-link {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-family: var(--display);
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color var(--transition);
  font-weight: 500;
}
.social-link:hover { color: var(--accent); }
.social-icon {
  width: 38px;
  height: 38px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}
.social-link:hover .social-icon {
  border-color: var(--accent);
  background: var(--accent-pale);
  box-shadow: 0 0 0 3px rgba(29,78,216,0.08);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.form-group label {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
}
.form-group input,
.form-group textarea {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  color: var(--text);
  font-family: var(--body);
  font-size: 0.93rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: none;
  box-shadow: var(--shadow-sm);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-light); }
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(29,78,216,0.1);
}
.form-group textarea { min-height: 130px; }
.form-submit {
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.92rem;
  color: #fff;
  background: var(--accent);
  border: none;
  padding: 0.85rem 2rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  align-self: flex-start;
  box-shadow: 0 4px 16px rgba(29,78,216,0.25);
}
.form-submit:hover {
  background: var(--navy-mid);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(29,78,216,0.3);
}
.form-success {
  display: none;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--green);
  padding: 0.75rem 1rem;
  border: 1px solid rgba(16,185,129,0.25);
  border-radius: var(--radius);
  background: rgba(16,185,129,0.06);
}

.page-hero {
  padding: 9rem 2.5rem 4rem;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.page-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
  transition: color var(--transition);
  font-weight: 700;
}
.page-back:hover { color: var(--accent); }
.page-title {
  font-family: var(--display);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1rem;
  color: var(--navy);
}
.page-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}
.page-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2.5rem 6rem;
  position: relative;
  z-index: 1;
}
.page-content h2 {
  font-family: var(--display);
  font-size: 1.45rem;
  font-weight: 700;
  margin: 3rem 0 1rem;
  color: var(--navy);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.page-content h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.3em;
  background: linear-gradient(to bottom, var(--accent), var(--cyan));
  border-radius: 2px;
  flex-shrink: 0;
}
.page-content p {
  color: var(--text-muted);
  font-size: 0.97rem;
  line-height: 1.85;
  max-width: 720px;
  margin-bottom: 1rem;
}
.page-content strong { color: var(--navy); font-weight: 600; }
.page-content ul {
  list-style: none;
  margin-bottom: 1.5rem;
  max-width: 720px;
}
.page-content ul li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 0.5rem;
}
.page-content ul li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 700;
}

.project-video-wrap {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1.5px solid var(--border);
  margin-bottom: 0.75rem;
  background: #000;
  box-shadow: var(--shadow-md);
}
.project-video-wrap video {
  width: 100%;
  display: block;
  max-height: 560px;
  object-fit: contain;
}
.project-img-wrap {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1.5px solid var(--border);
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-md);
}
.project-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

.media-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--bg-alt);
  border: 1.5px dashed var(--border-mid);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--text-light);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.media-placeholder svg { opacity: 0.35; }
.img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--bg-alt);
  border: 1.5px dashed var(--border-mid);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--text-light);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}
.img-caption {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-light);
  letter-spacing: 0.06em;
  margin-bottom: 2rem;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.highlight-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.2rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.highlight-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.highlight-num {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.3rem;
}
.highlight-label {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.5;
}

footer {
  position: relative;
  z-index: 1;
  background: var(--navy);
  padding: 2.5rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-left {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.06em;
}
.footer-left span { color: #60A5FA; }
.footer-right {
  display: flex;
  gap: 1.5rem;
}
.footer-right a {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.08em;
  transition: color var(--transition);
}
.footer-right a:hover { color: #60A5FA; }

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.cursor-glow {
  position: fixed;
  pointer-events: none;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(29,78,216,0.06) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  z-index: 0;
  transition: opacity 0.3s;
}

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: center;
  }
  .hero-image-col { order: -1; }
  .hero-img-frame { max-width: 260px; margin: 0 auto; }
  .hero-eyebrow { justify-content: center; }
  .hero-skills  { justify-content: center; }
  .hero-cta     { justify-content: center; }

  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  .timeline-role-row {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .company-logo {
    justify-content: flex-start;
  }
  .company-logo img {
    width: 140px;
  }

  .contact-wrapper { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 600px) {
  :root { font-size: 15px; }

  .navbar { padding: 0 1.1rem; height: 60px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-nav { top: 60px; padding: 1.25rem 1.1rem 1.75rem; }

  .section { padding: 3.5rem 1.1rem; }

  #hero {
    padding-left: 1.1rem;
    padding-right: 1.1rem;
    padding-top: 60px;
    min-height: calc(100svh);
  }
  .hero-inner { gap: 2rem; }
  .hero-img-frame { max-width: 200px; }
  .hero-img-frame::before { bottom: -10px; right: -10px; }
  .hero-name { font-size: clamp(2.6rem, 11vw, 3.8rem); }
  .hero-tagline { font-size: 1rem; }
  .hero-skills { gap: 0.4rem; }
  .skill-pill { font-size: 0.64rem; padding: 0.25rem 0.6rem; }
  .btn-primary, .btn-outline { padding: 0.7rem 1.4rem; font-size: 0.875rem; width: 100%; text-align: center; }
  .hero-cta { flex-direction: column; gap: 0.75rem; }

  .section-title { font-size: clamp(1.7rem, 7vw, 2.2rem); }

  .about-collage::before {
    display: none;
  }

  .timeline { padding-left: 1.75rem; }
  .timeline-dot { left: -1.75rem; width: 13px; height: 13px; }
  .timeline-role-row { 
    grid-template-columns: 1fr; 
    gap: 0.75rem; 
  }
  .company-logo img { width: 120px; }
  .timeline-role { font-size: 1.1rem; }
  .timeline-desc { font-size: 0.91rem; }
  .timeline-tags { gap: 0.35rem; }

  .research-card { padding: 1.4rem 1.2rem 1.4rem 1.6rem; }
  .research-card-header { flex-direction: column; align-items: flex-start; }
  .research-detail-grid { grid-template-columns: 1fr 1fr; }

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

  .social-link span { font-size: 0.82rem; word-break: break-all; }
  .form-submit { width: 100%; text-align: center; }

  .page-hero { padding: 6.5rem 1.1rem 2.5rem; }
  .page-content { padding: 0 1.1rem 4rem; }
  .highlight-grid { grid-template-columns: 1fr; }
  .page-title { font-size: clamp(1.9rem, 8vw, 2.6rem); }

  footer { padding: 1.5rem 1.1rem; flex-direction: column; align-items: flex-start; gap: 0.75rem; }
}

@media (max-width: 390px) {
  .hero-img-frame { max-width: 180px; }
  .hero-name { font-size: 2.4rem; }
  .research-detail-grid { grid-template-columns: 1fr; }
  .company-logo img { width: 100px; }
}

@supports (padding: max(0px)) {
  .navbar {
    padding-left:  max(1.1rem, env(safe-area-inset-left));
    padding-right: max(1.1rem, env(safe-area-inset-right));
  }
  .mobile-nav {
    padding-left:  max(1.25rem, env(safe-area-inset-left));
    padding-right: max(1.25rem, env(safe-area-inset-right));
  }
  #hero {
    padding-left:  max(1.1rem, env(safe-area-inset-left));
    padding-right: max(1.1rem, env(safe-area-inset-right));
  }
  .section {
    padding-left:  max(1.1rem, env(safe-area-inset-left));
    padding-right: max(1.1rem, env(safe-area-inset-right));
  }
  footer {
    padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
    padding-left:   max(1.1rem, env(safe-area-inset-left));
    padding-right:  max(1.1rem, env(safe-area-inset-right));
  }
}