/* ─── Navigation ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) 0;
  transition: background var(--transition-base), backdrop-filter var(--transition-base);
}

.nav--scrolled {
  background: rgba(238, 240, 245, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 3px rgba(22, 32, 51, 0.05);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  width: 90%;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.nav__logo span {
  color: var(--color-accent-primary);
}

.nav__links {
  display: none;
  gap: var(--space-lg);
}

.nav__links a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.nav__links a:hover {
  color: var(--color-accent-primary);
}

.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav__hamburger--open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__hamburger--open span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger--open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (min-width: 1024px) {
  .nav__links {
    display: flex;
  }
  .nav__hamburger {
    display: none;
  }
}

/* Mobile overlay */
.nav__overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(238, 240, 245, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav__overlay--open {
  opacity: 1;
  pointer-events: all;
}

.nav__overlay a {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.nav__overlay a:hover {
  color: var(--color-accent-primary);
}

/* ─── Hero ─── */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
  text-align: center;
}

@media (min-width: 768px) {
  .hero {
    flex-direction: row;
    text-align: left;
    gap: var(--space-2xl);
  }
}

.hero__photo {
  flex-shrink: 0;
}

.hero__headshot {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-accent-primary);
  box-shadow: 0 8px 30px rgba(37, 99, 235, 0.15);
}

.hero__name {
  font-family: var(--font-sans);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.15;
  margin-bottom: var(--space-xs);
}

.hero__role {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-accent-secondary);
  margin-bottom: var(--space-md);
}

.hero__text {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.hero__domains {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  justify-content: center;
}

@media (min-width: 768px) {
  .hero__domains {
    justify-content: flex-start;
  }
}

.hero__domains span {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.3rem 0.75rem;
  border-radius: var(--border-radius);
  background: var(--color-accent-primary);
  color: #fff;
  font-weight: 500;
}

.hero__ctas {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

@media (min-width: 768px) {
  .hero__ctas {
    justify-content: flex-start;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

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

.btn--primary:hover {
  background: var(--color-accent-primary-dim);
  transform: translateY(-1px);
}

.btn--outline {
  border: 1px solid var(--color-border-hover);
  color: var(--color-text-primary);
}

.btn--outline:hover {
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
  transform: translateY(-1px);
}

/* ─── Skill Tags ─── */
.skills {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.skills__group-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-accent-primary);
  margin-bottom: var(--space-sm);
}

.skills__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skill-tag {
  padding: 0.35rem 0.75rem;
  border-radius: var(--border-radius);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--color-bg-card);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  border-color: var(--color-accent-primary);
  color: var(--color-text-primary);
}

/* Skill categories — navy to teal spectrum */
.skill-tag--leadership { border-left: 3px solid var(--color-accent-primary); }
.skill-tag--software { border-left: 3px solid var(--color-accent-primary-dim); }
.skill-tag--ai { border-left: 3px solid var(--color-accent-mid); }
.skill-tag--hardware { border-left: 3px solid var(--color-accent-secondary); }
.skill-tag--infra { border-left: 3px solid var(--color-accent-secondary); }

/* ─── Experience Cards ─── */
.exp-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  padding-top: calc(var(--space-lg) + 4px);
  transition: all var(--transition-base);
  box-shadow: 0 2px 8px rgba(22, 32, 51, 0.05);
  position: relative;
  overflow: hidden;
}

.exp-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-secondary));
}

.exp-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(22, 32, 51, 0.1);
}

.exp-card__logo {
  height: 44px;
  width: auto;
  margin-bottom: var(--space-md);
}

.exp-card__role {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.exp-card__company {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-accent-primary);
  margin-bottom: var(--space-xs);
}

.exp-card__dates {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.exp-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.exp-card__metric {
  color: var(--color-accent-secondary);
  font-weight: 600;
}

/* ─── Project Cards ─── */
.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--color-accent-secondary);
  box-shadow: 0 8px 30px rgba(22, 32, 51, 0.08);
  transform: translateY(-2px);
}

.project-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-md);
}

.project-card__name {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.project-card__link {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.project-card__link:hover {
  color: var(--color-accent-primary);
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
}

.project-card__tech {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.tech-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--border-radius);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* ─── Grey Matter Section ─── */
.greymatter {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.greymatter__logo-text {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.greymatter__tagline {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-accent-secondary);
  margin-bottom: var(--space-lg);
}

.greymatter__desc {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.greymatter__callout {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent-secondary);
  border-radius: var(--border-radius);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  text-align: left;
}

.greymatter__callout-title {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.greymatter__callout-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* ─── Footer ─── */
.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}

.footer__social {
  display: flex;
  gap: var(--space-lg);
}

.footer__social a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__social a:hover {
  color: var(--color-accent-primary);
}

.footer__social img {
  width: 24px;
  height: 24px;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.footer__social a:hover img {
  opacity: 1;
}

.footer__location {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}