/* =========================================================
   responsive.css — breakpoints for all viewport sizes
   ========================================================= */

/* ---- 1280px (Large Laptop) ---- */
@media (max-width: 1280px) {
  :root { --container-w: 1040px; }

  .hero-stats { gap: 14px; }
  .projects-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .skills-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ---- 1024px (Laptop / Small Desktop) ---- */
@media (max-width: 1024px) {
  :root { --container-w: 900px; }

  /* Nav */
  .nav-links { gap: 22px; }
  .nav-link { font-size: 0.87rem; }

  /* Hero */
  .hero-stats { grid-template-columns: repeat(4, 1fr); gap: 12px; }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-timeline-mini { max-width: 520px; }

  /* Skills */
  .skills-grid { grid-template-columns: repeat(4, 1fr); }

  /* Projects */
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .github-grid { grid-template-columns: repeat(2, 1fr); }

  /* Pipeline */
  .pipeline { gap: 0; }
  .pipeline-arrow { width: 24px; }

  /* Timeline */
  .vtimeline-line { left: 28px; transform: none; }
  .vtimeline-item { width: 100%; left: 0 !important; text-align: left !important; padding-left: 68px; padding-right: 0; }
  .vtimeline-item .vtimeline-dot { left: 22px !important; right: auto !important; }

  /* Certs */
  .cert-grid { grid-template-columns: repeat(3, 1fr); }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ---- 768px (Tablet) ---- */
@media (max-width: 768px) {
  :root {
    --container-w: 100%;
    --nav-h: 66px;
  }

  .section { padding: 88px 0; }

  /* Nav — hamburger mode */
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(2, 6, 23, 0.96); backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-glass);
    padding: 16px 0 24px;
    max-height: 0; overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.4s ease;
    opacity: 0;
    pointer-events: none;
    z-index: 999;
  }
  .nav-links.open { max-height: 420px; opacity: 1; pointer-events: all; }
  .nav-link { padding: 14px 28px; font-size: 1rem; color: var(--text-secondary); }
  .nav-link::after { display: none; }
  .hamburger { display: flex; }
  .btn-ghost.btn-sm { display: none; }

  /* Hero */
  .hero-title { font-size: clamp(2rem, 8vw, 3rem); }
  .hero-subtitle { font-size: 1.1rem; }
  .hero-desc { font-size: 0.95rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-number { font-size: 1.5rem; }
  .floating-icon { font-size: 1.6rem; }
  .hero-buttons { gap: 10px; }

  /* About */
  .about-badges { flex-direction: column; }

  /* Skills */
  .skills-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }

  /* Projects */
  .projects-grid { grid-template-columns: 1fr; }
  .github-grid { grid-template-columns: 1fr; }
  .filter-bar { gap: 8px; }
  .filter-btn { padding: 8px 14px; font-size: 0.8rem; }

  /* Pipeline - wrap into 2 rows */
  .pipeline { gap: 0; flex-wrap: wrap; justify-content: center; }
  .pipeline-node { min-width: 96px; padding: 14px 12px; }
  .pipeline-arrow { display: none; }

  /* Certs */
  .cert-grid { grid-template-columns: repeat(2, 1fr); }

  /* Contact */
  .contact-form { padding: 26px 20px; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 14px; text-align: center; }
}

/* ---- 480px (Mobile) ---- */
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section { padding: 72px 0; }
  .section-title { font-size: 1.5rem; }

  /* Hero */
  .hero-title { font-size: 1.9rem; }
  .hero-eyebrow { font-size: 0.74rem; padding: 7px 12px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 16px 10px; }
  .stat-number { font-size: 1.3rem; }
  .hero-buttons .btn { padding: 13px 20px; font-size: 0.88rem; }
  .scroll-indicator { display: none; }
  .floating-icon { font-size: 1.3rem; }

  /* Skills */
  .skills-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .skill-card { padding: 20px 10px; }
  .skill-card i { font-size: 1.8rem; }

  /* Certs */
  .cert-grid { grid-template-columns: 1fr; }

  /* Projects */
  .projects-grid { gap: 18px; }
  .project-image { height: 130px; }

  /* Timeline */
  .vtimeline-line { left: 16px; }
  .vtimeline-item { padding-left: 48px; padding-right: 0; padding-bottom: 44px; }
  .vtimeline-item .vtimeline-dot { left: 10px !important; }
  .vtimeline-content { padding: 16px; }
  .vtimeline-content h3 { font-size: 0.95rem; }

  /* Pipeline */
  .pipeline-node { min-width: 80px; padding: 12px 10px; }
  .pipeline-node i { font-size: 1.3rem; }
  .pipeline-node span { font-size: 0.68rem; }

  /* Footer */
  .social-icons a { width: 36px; height: 36px; }

  /* Modal */
  .modal-box { padding: 24px 18px; }
  .modal-diagram { font-size: 0.78rem; }

  /* Nav */
  .nav-logo { font-size: 0.95rem; }
}

/* ---- 360px (Small Mobile) ---- */
@media (max-width: 360px) {
  .hero-title { font-size: 1.65rem; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: 1fr; }
}

/* ---- Touch / pointer ---- */
@media (hover: none) {
  .cursor-glow { display: none; }
  .skill-card, .project-card, .cert-card { animation: none; }
}

/* ---- Print ---- */
@media print {
  #loader, .cursor-glow, #particleCanvas, .floating-icons,
  .hero-gradient-blob, .hero-spotlight, #scrollProgress,
  #pageTransition { display: none !important; }

  body { background: #fff; color: #000; }
  .section { padding: 40px 0; page-break-inside: avoid; }
  a { color: inherit; }
}