/* ==========================================================================
   USA TRAIN BOOKING - RESPONSIVE STYLESHEET
   Mobile-First & Breakpoints: 1200px, 992px, 768px, 576px
   ========================================================================== */

/* Large Tablets & Small Desktops (<= 1080px) */
@media (max-width: 1080px) {
  .search-form-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
  }
  .swap-btn-col {
    display: none;
  }
  .search-btn-col {
    grid-column: span 1;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .routes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 30px;
  }
}

/* Tablets (<= 992px) */
@media (max-width: 992px) {
  :root {
    --header-height: 70px;
  }

  /* Header */
  .main-nav,
  .header-cta {
    display: none;
  }
  .mobile-toggle {
    display: flex;
  }
  .mobile-header-actions {
    display: flex !important;
  }

  /* Hero */
  .hero-section {
    min-height: 380px;
    padding: 30px 0 36px;
    background-position: 80% 80%;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-subtitle {
    font-size: 0.95rem;
  }

  /* Search Engine */
  .search-form-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .swap-btn-col {
    display: none;
  }
  .search-btn-col {
    grid-column: span 2;
  }

  /* How it works */
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* Info Section */
  .info-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .info-media img {
    height: 320px;
  }

  /* CTA Banner */
  .cta-banner-card {
    flex-direction: column;
    text-align: center;
    padding: 40px 24px;
  }
  .cta-banner-content h2 {
    font-size: 2rem;
  }

  /* Results Layout */
  .results-layout {
    grid-template-columns: 1fr;
  }
  .filters-sidebar {
    position: static;
    margin-bottom: 24px;
  }

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

/* Mobile Landscape & Large Phones (<= 768px) */
@media (max-width: 768px) {
  .section-padding {
    padding-top: 50px;
    padding-bottom: 50px;
  }

  .hero-section {
    padding: 40px 0 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-features {
    gap: 12px 18px;
  }

  .feature-pill {
    font-size: 0.85rem;
  }

  .search-widget {
    padding: 20px 16px;
    border-radius: var(--radius-lg);
  }

  .trip-tabs {
    margin-bottom: 18px;
  }

  .tab-btn {
    padding: 6px 14px;
    font-size: 0.88rem;
  }

  .search-form-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .search-btn-col {
    grid-column: span 1;
    margin-top: 8px;
  }

  .swap-stations-btn {
    display: none; /* Hide floating swap on stacked mobile inputs */
  }

  /* Train Card Mobile */
  .train-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 16px;
  }

  .train-card-body {
    grid-template-columns: 1fr;
    padding: 16px;
    gap: 20px;
  }

  .timeline-block {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .timeline-duration-path {
    width: 100%;
    padding: 8px 0;
  }

  .fare-action-block {
    border-left: none;
    border-top: 1px solid var(--border-color);
    padding-left: 0;
    padding-top: 16px;
    justify-content: space-between;
  }

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

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .search-summary-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
  }

  .summary-details {
    flex-wrap: wrap;
    gap: 10px;
    width: 100%;
  }

  .summary-pill {
    font-size: 0.8rem;
    padding: 6px 12px;
  }
}

/* Small Phones (<= 480px) */
@media (max-width: 480px) {
  .hero-title {
    font-size: 1.7rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .btn-lg {
    padding: 12px 24px;
    font-size: 0.95rem;
  }

  .btn-cta {
    padding: 12px 20px;
    font-size: 0.85rem;
  }

  .passenger-popover {
    width: 280px;
    right: -10px;
  }

  /* Booking responsive */
  .voucher-details-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
}

/* Tablet Booking Layout */
@media (max-width: 992px) {
  .booking-layout-grid {
    grid-template-columns: 1fr;
  }
  .booking-sidebar-card {
    position: static;
    margin-top: 24px;
  }
}

/* Mobile Form Grids */
@media (max-width: 768px) {
  .form-grid-2,
  .form-grid-3 {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .voucher-route {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .v-path {
    width: 100%;
    padding: 10px 0;
  }
  .voucher-details-grid {
    grid-template-columns: 1fr;
  }
  .confirmation-actions {
    flex-direction: column;
    width: 100%;
  }
  .confirmation-actions .btn {
    width: 100%;
  }
}