/* ==========================================================================
   MentionMeAI — Responsive Breakpoints (Mobile, Tablet, Desktop)
   ========================================================================== */

@media (max-width: 1120px) {
  .hero-grid,
  .split-grid {
    gap: 40px;
  }

  .grid-4,
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

  .footer-brand p {
    max-width: 560px;
  }
}

@media (max-width: 980px) {
  :root {
    --header-height: 72px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 20px;
    padding: 24px;
    background: rgba(8, 13, 26, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .nav-link {
    padding: 14px 16px;
    font-size: 1.05rem;
    border-radius: 10px;
  }

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

  .header-actions {
    width: 100%;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
  }

  .header-actions .btn {
    width: 100%;
    padding: 14px 22px;
  }

  .hero {
    padding: 64px 0 76px;
  }

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

  .hero-content .lead {
    max-width: 100%;
  }

  .grid-3,
  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .service-detail {
    padding: 36px 28px;
  }

  .service-detail-header {
    flex-direction: column;
  }
}

@media (max-width: 680px) {
  .section {
    padding: 68px 0;
  }

  .page-hero {
    padding: 56px 0 52px;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .process-grid,
  .process-grid-5,
  .industries-grid,
  .form-grid,
  .checkbox-grid {
    grid-template-columns: 1fr;
  }

  .card,
  .form-card,
  .legal-card {
    padding: 26px 22px;
  }

  .cta-banner {
    padding: 44px 24px;
  }

  .btn-group {
    width: 100%;
  }

  .btn-group .btn {
    width: 100%;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 440px) {
  .container,
  .container-narrow {
    padding: 0 18px;
  }

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