/* ==========================================================================
   LopperX — US Financial Calculators
   Responsive & Adaptive Media Queries (responsive.css)
   ========================================================================== */

/* --------------------------------------------------------------------------
   Large Desktops & Ultra-Wide (1440px+)
   -------------------------------------------------------------------------- */
@media (min-width: 1440px) {
  :root {
    --max-width: 1320px;
  }
  
  .hero-title {
    font-size: 3.5rem;
  }
  
  .calc-layout-grid {
    grid-template-columns: 500px 1fr;
    gap: 48px;
  }
}

/* --------------------------------------------------------------------------
   Standard Desktops (1024px - 1279px)
   -------------------------------------------------------------------------- */
@media (max-width: 1279px) {
  .calc-layout-grid {
    grid-template-columns: 420px 1fr;
    gap: 28px;
  }
  
  .dropdown-menu {
    width: 680px;
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1.2fr 1fr 1fr;
  }
  
  .footer-col-social {
    grid-column: span 4;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
}

/* --------------------------------------------------------------------------
   Tablets & Small Laptops (768px - 1023px)
   -------------------------------------------------------------------------- */
@media (max-width: 1023px) {
  .main-nav {
    display: none; /* Controlled by mobile drawer */
  }

  .mobile-toggle {
    display: flex;
  }

  .calc-layout-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-col-social {
    grid-column: span 2;
  }
}

/* --------------------------------------------------------------------------
   Mobile Drawer Navigation Overlay
   -------------------------------------------------------------------------- */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 320px;
  max-width: 85vw;
  background-color: var(--color-surface);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.2);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
  padding: 24px;
}

.mobile-nav-drawer.open {
  transform: translateX(0);
}

.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(11, 25, 44, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.mobile-nav-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-close {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background-color: var(--color-surface-hover);
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-nav-links a {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-surface-hover);
}

.mobile-calc-group {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 2px solid var(--color-border);
}

.mobile-calc-group h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.mobile-calc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-calc-list a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 6px 0;
  border-bottom: none;
}

/* --------------------------------------------------------------------------
   Phablets & Large Phones (414px - 767px)
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
  :root {
    --header-height: 64px;
  }

  .hero {
    padding: 56px 0 70px;
  }

  .hero-title {
    font-size: 2.15rem;
  }

  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 28px;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

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

  .search-section {
    margin-top: -24px;
  }

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

  .calc-header-title {
    font-size: 1.85rem;
  }

  .calc-card-panel {
    padding: 20px;
  }

  .results-hero-card {
    padding: 24px;
  }

  .results-hero-value {
    font-size: 2.25rem;
  }

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

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

  .footer-col-social {
    grid-column: span 1;
  }

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

/* --------------------------------------------------------------------------
   Small Phones (320px - 413px: iPhone SE, Galaxy, etc.)
   -------------------------------------------------------------------------- */
@media (max-width: 413px) {
  .hero-title {
    font-size: 1.85rem;
  }

  .calc-header-title {
    font-size: 1.6rem;
  }

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

  .chart-body {
    flex-direction: column;
    gap: 20px;
  }

  .calc-actions {
    flex-direction: column;
  }

  .results-toolbar {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

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