/* ============================================================
   ASWIN BALAJI R. — responsive.css
   Breakpoints: 1440, 1200, 1024, 768, 480, 375, 320
   ============================================================ */

/* ─── 1440px (Large Desktop) ────────────────────────────────── */
@media (max-width: 1440px) {
  :root { --container-max: 1200px; }
}

/* ─── 1200px (Desktop) ──────────────────────────────────────── */
@media (max-width: 1200px) {
  :root { --section-pad: 96px; }

  .hero-container { gap: 40px; }
  .hero-visual-inner { width: 420px; height: 420px; }
  .orbit-ring-1 { width: 260px; height: 260px; }
  .orbit-ring-2 { width: 340px; height: 340px; }
  .orbit-ring-3 { width: 400px; height: 400px; }

  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
  .footer-grid > *:last-child { grid-column: 2; }

  .ailab-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ─── 1024px (Laptop) ───────────────────────────────────────── */
@media (max-width: 1024px) {
  :root { --section-pad: 80px; }

  /* Navbar */
  .nav-links { gap: 0; }
  .nav-link { padding: 8px 10px; font-size: 0.82rem; }
  .btn-resume { display: none; }

  /* Hero */
  .hero-container { gap: 32px; }
  .hero-title { font-size: clamp(2.2rem, 4.5vw, 3.8rem); }
  .hero-visual-inner { width: 360px; height: 360px; }
  .fc-1, .fc-2, .fc-3 { font-size: 0.76rem; padding: 9px 12px; }
  .orbit-ring-2 { width: 310px; height: 310px; }
  .orbit-ring-3 { width: 360px; height: 360px; }

  /* About */
  .about-grid { gap: 48px; }
  .about-achievements { flex-wrap: wrap; }

  /* Skills */
  .skills-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }

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

  /* Experience */
  .timeline-wrap::before { left: 20px; }
  .timeline-item { grid-template-columns: 0 auto 1fr; }
  .timeline-item.right .timeline-content-left { visibility: hidden; }
  .timeline-item:not(.right) .timeline-content-right { visibility: visible; }
  .timeline-item:not(.right) .timeline-content-left { visibility: hidden; }
  .timeline-content-left, .timeline-content-right { grid-column: 3; }

  /* Certifications */
  .edu-cards-grid { grid-template-columns: 1fr; }

  /* AI Lab */
  .ailab-grid { grid-template-columns: repeat(2, 1fr); }

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

  /* Contact */
  .contact-grid { gap: 48px; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

/* ─── 768px (Tablet) ────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --section-pad: 64px; }

  html { font-size: 15px; }

  /* Cursor — hide on touch */
  .cursor-dot, .cursor-ring { display: none; }

  /* Navbar — mobile */
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-card);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 80px 32px 32px;
    gap: 4px;
    transition: right var(--trans-base);
    z-index: 800;
  }

  .nav-links.open { right: 0; }

  .nav-link {
    width: 100%;
    font-size: 1rem;
    padding: 12px 16px;
    border-radius: var(--radius-md);
  }

  .hamburger { display: flex; }
  .btn-hire-nav { display: none; }

  /* Hero */
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
    padding-top: 40px;
  }

  .hero-content { max-width: 100%; }
  .hero-badge { justify-content: center; display: inline-flex; }
  .hero-specialties { justify-content: center; }
  .hero-cta { justify-content: center; }
  .hero-socials { justify-content: center; }
  .hero-role-wrap { justify-content: center; }

  .hero-visual { order: -1; }
  .hero-visual-inner { width: 300px; height: 300px; }
  .hero-avatar-wrap { width: 160px; height: 160px; }
  .hero-avatar-img { width: 160px; height: 160px; }
  .orbit-ring-1 { width: 210px; height: 210px; }
  .orbit-ring-2 { width: 270px; height: 270px; }
  .orbit-ring-3 { width: 300px; height: 300px; }
  .fc-1, .fc-2, .fc-3 { display: none; }

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

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-img-col { max-width: 380px; margin: 0 auto; }
  .about-info-grid { grid-template-columns: 1fr; }
  .about-achievements { flex-direction: row; flex-wrap: wrap; }
  .achievement-card { min-width: 120px; }
  .about-cta { flex-direction: column; }
  .about-cta .btn-primary, .about-cta .btn-outline { width: 100%; justify-content: center; }

  /* Skills */
  .skill-categories { gap: 8px; }
  .cat-tab { font-size: 0.8rem; padding: 8px 16px; }
  .skills-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 12px; }

  /* Services */
  .services-grid { grid-template-columns: 1fr; gap: 20px; }

  /* Portfolio */
  .portfolio-grid { grid-template-columns: 1fr; }
  .portfolio-filters { gap: 8px; }
  .filter-btn { font-size: 0.8rem; padding: 8px 16px; }

  /* Experience timeline */
  .timeline-wrap::before { left: 16px; }
  .timeline-item {
    grid-template-columns: auto 1fr;
    gap: 0 20px;
  }
  .timeline-center { grid-column: 1; }
  .timeline-content-left,
  .timeline-content-right,
  .timeline-item.right .timeline-content-left,
  .timeline-item.right .timeline-content-right,
  .timeline-item:not(.right) .timeline-content-left,
  .timeline-item:not(.right) .timeline-content-right {
    grid-column: 2;
    visibility: visible;
    text-align: left;
  }

  /* Certs */
  .certs-grid { grid-template-columns: 1fr; }
  .cert-filters { gap: 8px; }

  /* AI Lab */
  .ailab-grid { grid-template-columns: repeat(2, 1fr); }

  /* Blog */
  .blog-grid { grid-template-columns: 1fr; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-socials { flex-wrap: wrap; }
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  /* Float contact */
  .float-contact { display: none; }
}

/* ─── 480px (Large Mobile) ──────────────────────────────────── */
@media (max-width: 480px) {
  :root { --section-pad: 56px; }

  .container { padding: 0 16px; }

  /* Nav */
  .nav-container { padding: 0 16px; }

  /* Hero */
  .hero-title { font-size: 2.2rem; }
  .hero-visual-inner { width: 260px; height: 260px; }
  .hero-avatar-wrap { width: 140px; height: 140px; }
  .hero-avatar-img { width: 140px; height: 140px; }
  .orbit-ring-1 { width: 190px; height: 190px; }
  .orbit-ring-2 { width: 240px; height: 240px; }
  .orbit-ring-3 { width: 260px; height: 260px; }
  .orbit-icon { width: 36px; height: 36px; font-size: 0.85rem; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn-primary,
  .hero-cta .btn-secondary,
  .hero-cta .btn-ghost { width: 100%; justify-content: center; }
  .hero-desc { font-size: 0.95rem; }

  /* Stats */
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-num { font-size: 2.6rem; }

  /* Section header */
  .section-title { font-size: 1.8rem; }

  /* About */
  .about-achievements { gap: 12px; }
  .achievement-card { flex: 1 1 calc(50% - 6px); }

  /* Skills */
  .skills-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
  .skill-card { padding: 16px 12px; }

  /* Services */
  .service-card { padding: 28px 24px; }

  /* AI Lab */
  .ailab-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .ailab-card { padding: 20px 16px; }
  .ailab-icon { width: 52px; height: 52px; font-size: 1.3rem; }

  /* Contact form */
  .contact-form { padding: 24px 20px; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; }
  .footer { padding: 60px 0 28px; }

  /* Back to top */
  #backToTop { bottom: 20px; right: 20px; width: 44px; height: 44px; }
}

/* ─── 375px (Standard Mobile) ───────────────────────────────── */
@media (max-width: 375px) {
  .hero-title { font-size: 1.9rem; }
  .hero-visual-inner { width: 220px; height: 220px; }
  .hero-avatar-wrap { width: 120px; height: 120px; }
  .hero-avatar-img { width: 120px; height: 120px; }
  .orbit-ring-1 { width: 160px; height: 160px; }
  .orbit-ring-2 { width: 200px; height: 200px; }
  .orbit-ring-3 { display: none; }

  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item { padding: 28px 16px; }
  .stat-num { font-size: 2.2rem; }

  .skill-categories { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; justify-content: flex-start; }
  .cat-tab { flex-shrink: 0; }
  .portfolio-filters { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; justify-content: flex-start; }
  .filter-btn { flex-shrink: 0; }

  .ailab-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .ailab-label { font-size: 0.82rem; }
}

/* ─── 320px (Smallest Mobile) ──────────────────────────────────*/
@media (max-width: 320px) {
  .hero-title { font-size: 1.7rem; }
  .hero-visual-inner { width: 200px; height: 200px; }
  .hero-avatar-wrap { width: 110px; height: 110px; }
  .hero-avatar-img { width: 110px; height: 110px; }
  .orbit-ring-1, .orbit-ring-2, .orbit-ring-3 { display: none; }
  .section-title { font-size: 1.55rem; }
  .ailab-grid { grid-template-columns: 1fr; }
}

/* ─── PRINT ──────────────────────────────────────────────────── */
@media print {
  .navbar, .scroll-progress, .cursor-dot, .cursor-ring,
  #preloader, #backToTop, .float-contact, .hero-visual { display: none !important; }
  .section { padding: 40px 0; }
  body { background: #fff; color: #000; }
}

/* ─── PRELOADER RESPONSIVE ───────────────────────────────────── */
@media (max-width: 480px) {
  .pl-name { font-size: 1.4rem; }
  .pl-logo-ring { width: 90px; height: 90px; }
  .pl-logo-ab { font-size: 1.2rem; }
  .pl-progress-wrap { width: 240px; }
  .pl-chips { gap: 6px; }
  .pl-chip { padding: 4px 10px; font-size: 0.68rem; }
}

/* ─── REDESIGNED SECTIONS RESPONSIVE ─────────────────────────── */

/* Stats v2 */
@media (max-width: 1200px) {
  .stats-cards-wrap { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .stats-cards-wrap { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .stats-title { font-size: 1.6rem; }
  .exp-summary-strip { flex-direction: column; gap: 4px; }
  .ess-sep { width: 60%; height: 1px; }
}
@media (max-width: 480px) {
  .stats-cards-wrap { grid-template-columns: 1fr 1fr; gap: 12px; }
  .scard { padding: 20px 16px 16px; }
  .scard-num { font-size: 2.2rem; }
  .scard-icon-box { width: 40px; height: 40px; font-size: 1.1rem; }
}

/* Hero v3 */
@media (max-width: 768px) {
  .hnb-name { font-size: 2.4rem; }
  .hero-role-line { font-size: 0.95rem; }
  .hero-tech-chips { gap: 6px; }
  .htc { padding: 5px 11px; font-size: 0.73rem; }
  .hero-cta-row { flex-direction: column; }
  .hcta-primary, .hcta-secondary, .hcta-ghost { width: 100%; justify-content: center; }
  .hero-footer-bar { flex-direction: column; align-items: flex-start; gap: 16px; }
  .hfb-sep { display: none; }
  .hfb-qs { gap: 24px; }
  .hfc-1, .hfc-2, .hfc-3 { display: none; }
}
@media (max-width: 480px) {
  .hnb-name { font-size: 2rem; }
  .hero-tagline { font-size: 0.9rem; }
}

/* About v2 */
@media (max-width: 768px) {
  .about-info-cards { grid-template-columns: 1fr; }
  .about-mini-tiles { justify-content: center; }
}

/* Experience v2 */
@media (max-width: 1024px) {
  .etl-header { flex-direction: column; gap: 12px; }
  .etl-meta-right { align-items: flex-start; }
}
@media (max-width: 768px) {
  .exp-timeline { padding-left: 0; }
  .exp-timeline::before { left: 22px; }
  .etl-item { grid-template-columns: 52px 1fr; gap: 16px; }
  .etl-connector { justify-content: flex-start; padding-top: 20px; }
  .etl-dot { width: 38px; height: 38px; font-size: 0.8rem; }
  .etl-card { padding: 20px; }
  .etl-role { font-size: 1rem; }
  .etl-company-logo { width: 44px; height: 44px; font-size: 0.88rem; }
  .etl-meta-right { flex-direction: row; align-items: center; gap: 8px; }
  .etl-highlights { display: none; }
}
@media (max-width: 480px) {
  .exp-timeline::before { display: none; }
  .etl-item { grid-template-columns: 1fr; }
  .etl-connector { display: none; }
  .etl-card { border-left: 3px solid var(--accent-blue); border-radius: var(--radius-lg); }
  .exp-cta-row { flex-direction: column; }
  .exp-cta-row .btn-primary,
  .exp-cta-row .btn-secondary { width: 100%; justify-content: center; }
}