/* ===================================================
   RESPONSIVE — Breakpoints
   =================================================== */

/* ── Tablet (≤1024px) ── */

@media (max-width: 1024px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .project-card.featured { grid-column: span 2; }
  .oss-banner { padding: 2rem; }
}

/* ── Tablet (≤900px) ── */

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .mobile-menu-btn { display: flex; }

  section { padding: 4rem clamp(1.25rem, 4vw, 2.5rem); }

  .hero-inner { flex-direction: column-reverse; justify-content: center; gap: 2rem; }
  #hero { overflow: visible; min-height: auto; padding-top: 100px; padding-bottom: 3rem; }
  .hero-image-wrap {
    width: clamp(140px, 35vw, 220px);
    height: clamp(175px, 44vw, 275px);
    border-radius: 14px;
  }
  .hero-image-wrap::before { border-radius: 14px; }

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

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

  .oss-banner { grid-template-columns: 1fr; gap: 2rem; padding: 2rem; }
  .oss-banner .oss-stats { flex-direction: row; flex-wrap: wrap; gap: 1.5rem; }

  .projects-grid { grid-template-columns: 1fr; }
  .project-card.featured { grid-column: span 1; grid-template-columns: 1fr; }
  .project-stats-box { display: grid; grid-template-columns: repeat(3, 1fr); min-width: unset; }

  .hero-stats { gap: 2rem; flex-wrap: wrap; }

  .timeline { padding-left: 1.5rem; }
  .timeline-item::before { left: -1.5rem; }
  .timeline-meta { flex-wrap: wrap; gap: 0.5rem; }
}

/* ── Mobile (≤600px) ── */

@media (max-width: 600px) {
  section { padding: 3.5rem 1.25rem; }

  nav { padding: 0 1.25rem; }

  h1 { font-size: clamp(2.25rem, 9vw, 3rem); letter-spacing: -0.03em; }

  .hero-image-wrap { display: none; }
  .hero-badge { font-size: 0.7rem; margin-bottom: 1rem; }
  .hero-sub { font-size: 0.9rem; margin-bottom: 1.25rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions a { width: 100%; justify-content: center; }
  .hero-stats { flex-direction: row; flex-wrap: wrap; gap: 1rem 2rem; margin-top: 1.5rem; padding-top: 1.25rem; }
  .hero-stats > div { min-width: calc(50% - 1rem); }
  .stat-val { font-size: 1.65rem; }

  .section-title { font-size: clamp(1.65rem, 6vw, 2.25rem); }

  .about-facts { grid-template-columns: repeat(2, 1fr); }
  .fact-card { padding: 1rem; }

  .timeline { padding-left: 1.25rem; }
  .timeline-item { padding-bottom: 2.25rem; }
  .timeline-item::before { left: -1.25rem; }
  .timeline-meta { flex-direction: column; align-items: flex-start; gap: 0.35rem; }
  .timeline-date { font-size: 0.72rem; }
  .timeline-role { font-size: 1.05rem; }
  .timeline-quote { padding: 0.85rem 1rem; }
  .timeline-quote p { font-size: 0.8rem; }
  .timeline-tags { gap: 0.3rem; }

  .project-card { padding: 1.5rem; }
  .project-card.featured { padding: 1.5rem; }
  .project-stats-box { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; padding: 1rem; }
  .proj-stat-num { font-size: 1.35rem; }

  .oss-banner { padding: 1.5rem; border-radius: 14px; }
  .oss-title { font-size: 1.5rem; }
  .oss-banner .oss-stats { flex-wrap: wrap; gap: 1rem 2rem; }

  .contact-form { padding: 1.5rem; border-radius: 14px; }
  .social-link { padding: 0.65rem 0.85rem; }
  .social-links { grid-template-columns: 1fr; }

  .btn-primary, .btn-outline { padding: 0.75rem 1.25rem; font-size: 0.85rem; }

  footer { flex-direction: column; gap: 0.5rem; text-align: center; }
}

/* ── Small Mobile (≤380px) ── */

@media (max-width: 380px) {
  h1 { font-size: 2rem; }
  .about-facts { grid-template-columns: 1fr; }
  .hero-stats > div { min-width: 100%; }
  .project-stats-box { grid-template-columns: 1fr 1fr 1fr; }
  .nav-logo { font-size: 1.1rem; }
}