/* ==========================================================================
   RESPONSIVE BREAKPOINTS (css/responsive.css)
   Tested across: 1920px, 1440px, 1366px, 1024px, 768px, 414px, 390px, 375px, 320px
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. LARGE DESKTOPS (1440px - 1920px+)
   -------------------------------------------------------------------------- */
@media screen and (min-width: 1440px) {
  :root {
    --container-max: 1260px;
  }

  .hero-grid {
    grid-template-columns: 430px 1fr;
    gap: 80px;
  }
}

/* --------------------------------------------------------------------------
   2. LAPTOPS & SMALL DESKTOPS (Max-width: 1199px / 1024px)
   -------------------------------------------------------------------------- */
@media screen and (max-width: 1199px) {
  .hero-grid {
    grid-template-columns: 350px 1fr;
    gap: 44px;
  }

  .services-grid,
  .portfolio-grid,
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-list {
    gap: 16px;
  }
}

/* --------------------------------------------------------------------------
   3. TABLETS & COMPACT LAPTOPS (Max-width: 991px / 768px)
   -------------------------------------------------------------------------- */
@media screen and (max-width: 991px) {
  :root {
    --header-height: 68px;
  }

  .section-padding {
    padding: 72px 0;
  }

  /* Mobile Hamburger Menu Activation */
  .mobile-menu-toggle {
    display: inline-flex;
  }

  .header-cta {
    display: none;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-strong);
    box-shadow: var(--shadow-card);
    padding: 20px 24px 28px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity var(--duration-normal) var(--ease-out),
                transform var(--duration-normal) var(--ease-out),
                visibility var(--duration-normal);
  }

  .main-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    display: block;
    padding: 12px 14px;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
  }

  .nav-link::after {
    display: none;
  }

  .nav-link:hover,
  .nav-link.active {
    background-color: var(--primary-soft);
    color: var(--primary-color);
  }

  /* Single-Column Stack for Hero, About, Resume, Skills, Contact */
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-profile-col {
    max-width: 380px;
    margin: 0 auto;
    width: 100%;
  }

  .hero-content-col {
    text-align: center;
  }

  .hero-typing-wrapper {
    justify-content: center;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-social-bar {
    justify-content: center;
  }

  .about-grid,
  .resume-grid,
  .skills-layout,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .footer-brand-col {
    grid-column: 1 / -1;
  }
}

/* --------------------------------------------------------------------------
   4. MOBILE PHONES (Max-width: 767px — iPhone / Android 414px, 390px, 375px)
   -------------------------------------------------------------------------- */
@media screen and (max-width: 767px) {
  .section-padding {
    padding: 60px 0;
  }

  .section-header {
    margin-bottom: 36px;
  }

  .services-grid,
  .portfolio-grid,
  .blog-grid,
  .form-row-two {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .info-grid {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .info-item:nth-last-child(2) {
    border-bottom: 1px solid var(--border-hairline);
    padding-bottom: 14px;
  }

  .portfolio-filters {
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding: 6px;
    scrollbar-width: none;
  }

  .portfolio-filters::-webkit-scrollbar {
    display: none;
  }

  .testimonial-carousel {
    padding: 28px 22px;
  }

  .contact-info-panel,
  .contact-form-panel,
  .skills-panel {
    padding: 24px 20px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }

  .modal-container {
    padding: 24px 18px;
  }
}

/* --------------------------------------------------------------------------
   5. SMALL MOBILE SCREENS (Max-width: 380px / 320px)
   -------------------------------------------------------------------------- */
@media screen and (max-width: 380px) {
  .container {
    padding: 0 16px;
  }

  .hero-title {
    font-size: 1.9rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn,
  .about-actions .btn,
  .btn-submit {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .timeline {
    padding-left: 20px;
  }

  .timeline-marker {
    left: -28px;
  }

  .timeline-item {
    padding: 20px 16px;
  }
}