/* ==========================================================================
   TibCal.com — Responsive Breakpoints & Mobile Adaptations
   ========================================================================== */

/* --------------------------------------------------------------------------
   Mobile Navigation Drawer (Below 768px)
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
  .header-search-btn {
    width: auto;
    max-width: 170px;
    padding: 0.4rem 0.75rem;
  }

  .search-kbd {
    display: none;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    background-color: var(--color-bg-surface);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    padding: var(--space-4);
    display: none;
  }

  .main-nav.is-open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }

  .nav-list li {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: var(--space-3) var(--space-2);
    border-bottom: 1px solid var(--color-bg-subtle);
  }

  .nav-link[aria-current="page"]::after {
    display: none;
  }

  .nav-item-has-dropdown {
    width: 100%;
  }

  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--color-primary);
    border-radius: 0;
    margin-left: 0.75rem;
    padding: 0.25rem 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-item-has-dropdown.is-open .nav-dropdown-menu {
    max-height: 500px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  /* Homepage Mobile Enhancements */
  .hero-banner {
    padding: 2.5rem 1rem !important;
  }
  .hero-banner h1 {
    font-size: clamp(1.65rem, 5.5vw, 2.25rem) !important;
  }
  .hero-banner p {
    font-size: clamp(0.95rem, 3.5vw, 1.1rem) !important;
    margin-bottom: 1.5rem !important;
  }
  .hero-search-trigger {
    height: 48px !important;
    padding: 0 0.85rem !important;
  }
  .hero-search-trigger span {
    font-size: 0.9rem !important;
  }
  .hero-search-trigger .search-kbd {
    display: none !important;
  }
  .trust-badges {
    gap: 0.75rem 1.25rem !important;
    font-size: 0.85rem !important;
  }
  .category-grid, .calculator-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .feature-value-grid {
    grid-template-columns: 1fr !important;
    padding: 1.5rem 1rem !important;
  }
}

/* --------------------------------------------------------------------------
   Tablet & Above (768px and up)
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  .calculator-layout {
    grid-template-columns: 3fr 2fr;
    align-items: start;
  }

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

  .form-grid-full {
    grid-column: 1 / -1;
  }

  .content-grid {
    grid-template-columns: 3fr 1fr;
  }

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

/* --------------------------------------------------------------------------
   Desktop & Above (1024px and up)
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
  .hero {
    padding: var(--space-16) 0 var(--space-16) 0;
  }

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

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