/* ==========================================================================
   Responsive Refinements & Breakpoints
   Targets: 1024px, 768px, 480px, 320px
   ========================================================================== */

/* Tablet & Smaller Laptops (<= 1024px) */
@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero__content {
    max-width: 700px;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

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

/* Tablets and Mobile Devices (<= 768px) */
@media (max-width: 768px) {
  .mobile-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: rgba(7, 12, 24, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    padding: 2.5rem 2rem;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    overflow-y: auto;
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 1.5rem;
  }

  .site-nav__link {
    font-size: 1.25rem;
    font-weight: 600;
    width: 100%;
    padding: 0.5rem 0;
  }

  .header-actions .btn--call {
    display: none; /* Replaced by floating mobile dial button to avoid header clutter */
  }

  .floating-dial {
    display: block;
  }

  body {
    padding-bottom: 5rem; /* Room for floating dial bar */
  }

  .back-to-top {
    bottom: 5.5rem;
    right: 1rem;
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .hero__floating-card {
    position: static;
    margin-top: 1rem;
  }

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

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Small Smartphones (<= 480px) */
@media (max-width: 480px) {
  :root {
    --header-height: 68px;
  }

  .brand-logo__img {
    height: 40px;
  }

  .hero__title {
    font-size: 2rem;
  }

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

  .section {
    padding: 3rem 0;
  }

  .contact-form-container {
    padding: 1.5rem 1.25rem;
  }

  .lightbox {
    padding: 0.75rem;
  }

  .lightbox__dialog {
    border-radius: var(--radius-md);
  }

  .lightbox__details {
    padding: 1rem 1.25rem;
  }

  .lightbox__nav-btn {
    width: 36px;
    height: 36px;
  }
}

/* Narrow Screens (>= 320px) Ensure zero horizontal scroll */
@media (max-width: 360px) {
  .hero__stat-value {
    font-size: 1rem;
  }
  .filter-btn {
    font-size: 0.75rem;
    padding: 0.45rem 0.9rem;
  }
}