/* ==========================================================================
   TotumVault Official Website — Responsive Breakpoints & Device Adaptations
   ========================================================================== */

/* 1280px & Large Desktops */
@media (max-width: 1280px) {
  .container {
    max-width: 1120px;
  }
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 1024px & Laptops / Large Tablets */
@media (max-width: 1024px) {
  .section {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .documents-showcase-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .security-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-nav-grid {
    gap: 2.5rem;
  }
}

/* 768px & Tablets */
@media (max-width: 768px) {
  .nav-links,
  .nav-actions .btn {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .hero {
    padding-top: 7rem;
    padding-bottom: 4rem;
  }
  .hero-trust-bar {
    gap: 1.25rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
    min-height: 48px;
  }
  .os-card-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .os-main-cta {
    flex-direction: column;
    align-items: stretch;
  }
  .os-main-cta .btn {
    width: 100%;
    min-height: 48px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .security-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    flex-direction: column;
    gap: 2.5rem;
  }
  .footer-nav-grid {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
  .comparison-box {
    overflow-x: auto;
  }
  .comparison-table {
    min-width: 600px;
  }
}

/* 640px & Mobile Devices */
@media (max-width: 640px) {
  .container {
    padding-left: 1.15rem;
    padding-right: 1.15rem;
  }
  .section {
    padding-top: 4.25rem;
    padding-bottom: 4.25rem;
  }
  .section-header {
    margin-bottom: 2.5rem;
  }
  .os-content-card {
    padding: 1.5rem;
    border-radius: var(--radius-lg);
  }
  .os-tabs {
    width: 100%;
    justify-content: center;
  }
  .os-tab-btn {
    padding: 0.65rem 1rem;
    font-size: 0.875rem;
  }
  .os-packages-grid {
    grid-template-columns: 1fr;
  }
  .scanner-viewfinder {
    height: 280px;
  }
  .interactive-crop-frame {
    top: 20px;
    bottom: 20px;
    left: 20px;
    right: 20px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
  }
  .footer-nav-grid {
    grid-template-columns: 1fr;
  }
  .timeline-wrapper {
    padding-left: 1.5rem;
  }
  .timeline-wrapper::before {
    left: 4px;
  }
  .timeline-dot {
    left: -1.5rem;
    width: 12px;
    height: 12px;
  }
}

/* Accessibility & High Contrast Enhancements */
@media (forced-colors: active) {
  .btn-primary, .os-tab-btn.active {
    border: 2px solid ButtonText;
  }
  .interactive-crop-frame {
    border: 2px solid Highlight;
  }
}