/* ==========================================================================
   RESPONSIVE.CSS
   Breakpoint overrides. style.css uses clamp() for fluid type/spacing so most
   sizing already scales — this file handles structural layout changes
   (columns → stacks, nav → drawer, etc.) at each range.
   ========================================================================== */

/* --------------------------------------------------------------------------
   ≤ 1200px — large tablet / small laptop
   -------------------------------------------------------------------------- */
@media (max-width: 1200px) {
  .site-nav-links { gap: 1.25rem; }
  .gallery-masonry { column-count: 3; }
}

/* --------------------------------------------------------------------------
   ≤ 960px — tablet: nav becomes a slide-in drawer
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .nav-toggle { display: flex; }

  .site-nav-links {
    position: fixed;
    top: 0;
    right: 0;
    height: 100dvh;
    width: min(320px, 80vw);
    background: var(--color-primary-dark);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 1.75rem;
    padding: 2rem clamp(1.5rem, 6vw, 2.5rem);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-strong);
    z-index: var(--z-nav);
  }
  .site-nav-links.is-open { transform: translateX(0); }
  .site-nav-links .nav-link { font-size: 1.15rem; }
  .site-nav-links .nav-link-cta { margin-top: 0.5rem; }

  .venue-content { grid-template-columns: 1fr; }
  .venue-map { min-height: 280px; }

  .gift-card { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .gift-bank-details { width: 100%; }

  .couple-grid { grid-template-columns: 1fr; }
  .couple-divider { padding-block: var(--space-sm); }
  .couple-divider-icon { transform: rotate(90deg); }
}

/* --------------------------------------------------------------------------
   ≤ 860px — filmstrip collapses to a single left-aligned column
   -------------------------------------------------------------------------- */
@media (max-width: 860px) {
  .filmstrip-rail { left: 22px; transform: none; width: 20px; }

  .scene,
  .scene.scene-reverse {
    grid-template-columns: 40px 1fr;
    gap: var(--space-md);
    padding-left: 0.5rem;
  }
  .scene-number,
  .scene.scene-reverse .scene-number {
    grid-column: 1;
    grid-row: 1 / 3;
    writing-mode: horizontal-tb;
    align-self: start;
    justify-self: start;
    margin-top: 0.4rem;
    font-size: var(--fs-tiny);
  }
  .scene-frame,
  .scene.scene-reverse .scene-frame { grid-column: 2; grid-row: 1; }
  .scene-text,
  .scene.scene-reverse .scene-text { grid-column: 2; grid-row: 2; text-align: left !important; }

  .family-groups { grid-template-columns: 1fr; gap: var(--space-lg); }
}

/* --------------------------------------------------------------------------
   ≤ 768px — mobile landscape / large phone
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .section { padding-block: clamp(3.5rem, 10vw, 5rem); }

  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }

  .music-toggle { width: 46px; height: 46px; top: 5rem; }

  .form-row { grid-template-columns: 1fr; }
  .attendance-toggle { flex-direction: column; }

  .gallery-masonry { column-count: 2; }

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

  .family-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); }
  .family-member img { width: 76px; height: 76px; }

  .event-card { text-align: center; }
  .event-icon { margin-inline: auto; }
  .event-date, .event-time, .event-venue { justify-content: center; }
}

/* --------------------------------------------------------------------------
   ≤ 600px — mobile
   -------------------------------------------------------------------------- */
@media (max-width: 600px) {
  .container { padding-inline: 1.25rem; }

  .hero-date { flex-wrap: wrap; gap: 0.5rem; font-size: 0.95rem; }

  .countdown-grid { gap: 0.5rem; }
  .countdown-item { min-width: 58px; padding: 0.75rem 0.35rem; }
  .countdown-sep { display: none; }

  .gallery-masonry { column-count: 1; }

  .gift-qr img { width: 180px; height: 180px; }
  .gift-bank-details li { flex-wrap: wrap; }
  .gift-bank-details strong { text-align: left; }

  .lightbox-prev, .lightbox-next { width: 40px; height: 40px; }
  .lightbox-prev { left: 0.5rem; }
  .lightbox-next { right: 0.5rem; }
  .lightbox-close { top: 0.75rem; right: 0.75rem; }

  .back-to-top, .music-toggle { width: 44px; height: 44px; }
}

/* --------------------------------------------------------------------------
   ≤ 420px — small phones
   -------------------------------------------------------------------------- */
@media (max-width: 420px) {
  .btn { padding: 0.9rem 1.5rem; font-size: 0.8rem; }
  .family-grid { grid-template-columns: repeat(2, 1fr); }
  .scene-frame img { aspect-ratio: 16 / 10; }
}

/* --------------------------------------------------------------------------
   Landscape phones — reduce hero min-height so content doesn't overflow
   -------------------------------------------------------------------------- */
@media (max-height: 480px) and (orientation: landscape) {
  .hero { min-height: 100vh; padding-block: 6rem 3rem; }
  .scroll-indicator { display: none; }
}

/* --------------------------------------------------------------------------
   Print — sensible fallback if someone prints the invitation
   -------------------------------------------------------------------------- */
@media print {
  .site-nav, .scroll-progress, .back-to-top, .music-toggle,
  .preloader, .lightbox, .scroll-indicator { display: none !important; }
  .hero { min-height: auto; }
  .section { padding-block: 2rem; }
}