/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  padding: 5.5rem 0 4.5rem;
  background: radial-gradient(
      circle at 75% 35%,
      rgba(175, 198, 218, 0.35),
      transparent 40%
    ),
    linear-gradient(135deg, #f5f7fa, #d6dee6);
}
.hero-inner {
  display: flex;
  align-items: center;
  gap: 4rem;
}
.hero-text {
  flex: 1;
}

/* Text side */
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.65);
  border: 0.0625rem solid var(--color-bg-accent);
  border-radius: 6.25rem;
  padding: 0.28rem 0.85rem;
  margin-bottom: 1.4rem;
}
.hero-heading {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}
.hero-greeting {
  display: block;
  color: var(--color-text);
}
.hero-name {
  color: var(--color-primary);
}
.hero-tagline {
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  display: block;
  margin-top: 0.2rem;
  color: var(--color-text-muted);
}
.hero-bio {
  color: var(--color-text-muted);
  font-size: clamp(0.875rem, 2.2vw, 0.95rem);
  line-height: 1.75;
  max-width: 27.5rem;
  margin-bottom: 2.25rem;
}

/* Social / skill rows */
.hero-links {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.hero-links-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-bottom: 0.55rem;
}
.hero-icons {
  display: flex;
  gap: 0.5rem;
}

/* Social icons */
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.4375rem;
  border: 0.0625rem solid var(--color-bg-accent);
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.7);
  transition:
    color var(--transition),
    border-color var(--transition),
    background var(--transition);
}
.social-link svg {
  width: 0.9375rem;
  height: 0.9375rem;
}
.social-link:hover {
  color: var(--color-primary);
  border-color: var(--color-secondary);
  background: rgba(255, 255, 255, 0.9);
}
.social-link:focus-visible {
  outline: 0.125rem solid var(--color-primary);
  outline-offset: 0.125rem;
}

/* Skill badges */
.skill-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2.25rem;
  padding: 0 0.7rem;
  border-radius: 0.4375rem;
  border: 0.0625rem solid var(--color-bg-accent);
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.7);
  font-weight: 600;
  font-size: 0.68rem;
  letter-spacing: 0.02em;
  transition:
    color var(--transition),
    border-color var(--transition),
    background var(--transition);
}
.skill-badge:hover {
  color: var(--color-primary);
  border-color: var(--color-secondary);
  background: rgba(255, 255, 255, 0.9);
}
.skill-badge:focus-visible {
  outline: 0.125rem solid var(--color-primary);
  outline-offset: 0.125rem;
}

/* Image side */
.hero-image {
  display: flex;
  flex: 1;
  justify-content: flex-end;
  align-items: center;
}
.hero-photo {
  width: 100%;
  max-width: 27.5rem;
  height: auto;
  border-radius: 1.75rem;
  box-shadow: 0 0.75rem 2.25rem rgba(30, 58, 95, 0.1);
  display: block;
}

/* ── Expertise ───────────────────────────────────────────────────────────── */
.features-section {
  padding: 5.5rem 0;
  background: var(--color-bg-soft);
}

.features-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.35rem;
  justify-content: center;
}

/* Feature card */
.feature-card {
  flex: 0 1 calc((100% - 2 * 1.35rem) / 3);
  background: var(--color-bg-main);
  border-radius: var(--radius-card);
  border: 0.0625rem solid var(--color-bg-accent);
  border-top: 0.125rem solid var(--color-secondary-light);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow-card);
  transition:
    box-shadow var(--transition),
    border-top-color var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  border-top-color: var(--color-primary);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 0.75rem;
  background: rgba(30, 58, 95, 0.06);
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}
.feature-icon-svg {
  width: 1.375rem;
  height: 1.375rem;
}
.feature-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.55rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.feature-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.72;
}

/* ── Projects ────────────────────────────────────────────────────────────── */
.portfolio-section {
  padding: 5.5rem 0;
  background: var(--color-bg-main);
}
.portfolio-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.35rem;
}
.project-card {
  flex: 0 1 calc((100% - 2 * 1.35rem) / 3);
  background: var(--color-bg-main);
  border: 0.0625rem solid var(--color-bg-accent);
  border-top: 0.125rem solid var(--color-secondary-light);
  border-radius: var(--radius-card);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  box-shadow: var(--shadow-card);
  transition:
    box-shadow var(--transition),
    border-top-color var(--transition);
}
.project-card:hover {
  box-shadow: var(--shadow-card-hover);
  border-top-color: var(--color-primary);
}
.project-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  flex: 1;
}
.project-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.project-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.72;
}
.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.stack-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  background: var(--color-bg-soft);
  border: 0.0625rem solid var(--color-bg-accent);
  border-radius: 0.25rem;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
  margin-top: auto;
  padding-top: 0.25rem;
}
.project-link:hover {
  color: var(--color-primary-light);
}
.project-link:focus-visible {
  outline: 0.125rem solid var(--color-primary);
  outline-offset: 0.125rem;
  border-radius: 0.125rem;
}

/* ── Stack ───────────────────────────────────────────────────────────────── */
.stack-section {
  padding: 5.5rem 0;
  background: var(--color-bg-soft);
}
.stack-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.stack-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.1rem;
  background: #e9eef3;
  border: 0.0625rem solid rgba(30, 58, 95, 0.12);
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #1e3a5f;
  letter-spacing: 0.01em;
  transition:
    background var(--transition),
    border-color var(--transition);
}
.stack-tag:hover {
  background: #d6dee6;
  border-color: rgba(30, 58, 95, 0.22);
}

/* ── Responsive ──────────────────────────────────────────────────────────── */

/* ─ Tablet / large phone (≤ 56.25rem / 900px) ───────────────────────────── */
@media (max-width: 56.25rem) {
  .hero {
    padding: 4rem 0 3.5rem;
  }
  .hero-inner {
    flex-direction: column;
    gap: 2rem;
  }
  .hero-text {
    flex: none;
    width: 100%;
  }
  .hero-image {
    flex: none;
    width: 100%;
    justify-content: center;
  }
  .hero-photo {
    width: 100%;
    max-width: 20rem;
    height: auto;
  }
  .feature-card {
    flex: 0 1 calc((100% - 1.35rem) / 2);
  }
  .project-card {
    flex: 0 1 calc((100% - 1.35rem) / 2);
  }
  .nav-list {
    gap: 0;
  }
  .nav-link {
    font-size: 0.72rem;
    padding: 0.3rem 0.5rem;
  }
}

/* ─ Small phone / nav overflow prevention (≤ 40rem / 640px) ────────────── */
@media (max-width: 40rem) {
  .main-nav {
    display: none;
  }
  .features-section,
  .portfolio-section,
  .stack-section {
    padding: 4rem 0;
  }
}

/* ─ Single-column layout (≤ 33.75rem / 540px) ───────────────────────────── */
@media (max-width: 33.75rem) {
  .hero {
    padding: 3rem 0 2.5rem;
  }
  .hero-photo {
    max-width: 15rem;
  }
  .feature-card {
    flex: 1 1 100%;
  }
  .project-card {
    flex: 1 1 100%;
  }
  .features-section,
  .portfolio-section,
  .stack-section {
    padding: 3rem 0;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
  .site-footer {
    margin-top: 3.5rem;
  }
}