/* Responsive breakpoints (320-767px mobile, 768-1023px tablet, 1024px+ desktop) */

/* Mobile / Tablet collapsed navigation (< 1024px) */
@media (max-width: 1023px) {
  .header-inner {
    flex-wrap: wrap;
    padding-block: 0.5rem;
    gap: 0.5rem;
  }

  .brand-link {
    gap: 0.5rem;
  }

  .brand-logo-img {
    width: 2.25rem;
    height: 2.25rem;
  }

  .brand-wordmark {
    font-size: 0.875rem;
  }

  .nav-toggle {
    padding: 0.5rem 0.625rem;
    font-size: 0.85rem;
  }

  .header-nav-wrap {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
    padding-block: var(--space-4);
    border-top: 1px solid var(--color-border);
  }

  /* Disclosure behavior only when JS is enabled so no-JS keeps links discoverable */
  html.js .header-nav-wrap:not(.is-open) {
    display: none;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
  }

  .nav-item-group {
    justify-content: space-between;
    width: 100%;
  }

  .nav-link {
    flex: 1;
    padding: 0.625rem 0.5rem;
  }

  .nav-submenu {
    margin-top: 0.25rem;
    margin-left: 0.75rem;
    padding: 0.25rem 0.5rem;
    background-color: var(--color-surface-soft);
    box-shadow: none;
  }

  .header-actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }

  .header-phone,
  .header-cta {
    justify-content: center;
    width: 100%;
  }
}

/* Tablet (768px+) */
@media (min-width: 768px) {
  .container {
    padding-inline: 2rem;
  }

  .section-pad {
    padding-block: 4rem;
  }

  .inner-hero {
    padding-block: 2.5rem 3.5rem;
  }

  .competency-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .competency-item {
    justify-content: center;
    padding: 1.5rem 1rem;
    border-bottom: none;
    border-right: 1px solid var(--color-border);
  }

  .competency-item:first-child {
    justify-content: flex-start;
  }

  .competency-item:last-child {
    justify-content: flex-end;
    border-right: none;
  }

  .services-grid,
  .related-services-grid,
  .usecases-grid,
  .contact-direct-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .orientation-groups-grid,
  .guidance-scenarios-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .process-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
  }

  .process-step {
    padding-right: var(--space-4);
    border-right: 1px solid var(--color-border);
  }

  .process-step:last-child {
    border-right: none;
    padding-right: 0;
  }

  .footer-grid {
    grid-template-columns: 1.3fr 1fr 1.2fr;
  }

  .footer-bottom {
    flex-direction: row;
    align-items: center;
  }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
  .container {
    padding-inline: 2.5rem;
  }

  .section-pad {
    padding-block: 5rem;
  }

  .nav-toggle {
    display: none;
  }

  .header-nav-wrap {
    display: flex !important;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex: 1;
    margin-left: var(--space-6);
  }

  .nav-submenu {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0;
    min-width: 16.5rem;
    z-index: 120;
  }

  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: var(--space-12);
    padding-block: 3.5rem;
  }

  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-direct-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-split-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-12);
  }

  .service-planning-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-12);
  }

  .inquiry-cta-inner {
    flex-direction: row;
    align-items: center;
  }

  .energy-split {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }

  .energy-content-col {
    padding: 4.5rem 4rem;
  }

  .contact-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--space-16);
  }

  .contact-info-col {
    padding-right: var(--space-8);
    border-right: 1px solid rgba(255, 255, 255, 0.14);
  }
}