/* ===================================================================
   RESPONSIVE OVERRIDES — Mobile-first (min-width queries)
   =================================================================== */

/* ===== 640px — Large Phones / Small Tablets ===== */
@media (min-width: 640px) {
  .countdown__units {
    gap: var(--space-md);
  }

  .countdown__unit {
    min-width: 80px;
  }

  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

}

/* ===== 768px — Tablets Portrait ===== */
@media (min-width: 768px) {
  .gallery__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Timeline: alternating left/right */
  .timeline {
    padding-left: 0;
    max-width: 900px;
  }

  .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .timeline__item {
    width: 50%;
    padding-right: var(--space-2xl);
  }

  .timeline__item:nth-child(odd) {
    margin-left: 0;
    text-align: right;
  }

  .timeline__item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: var(--space-2xl);
    text-align: left;
  }

  .timeline__marker {
    left: auto;
    right: -18px;
  }

  .timeline__item:nth-child(even) .timeline__marker {
    right: auto;
    left: -18px;
  }

  .form-group__radio-options {
    flex-direction: row;
  }

  .registry__links {
    grid-template-columns: 1fr;
    max-width: 500px;
  }

  .hero__name {
    display: inline;
  }
}

/* ===== 1024px — Tablets Landscape / Small Desktop ===== */
@media (min-width: 1024px) {
  /* Navigation: fixed vertical sidebar */
  .nav__toggle {
    display: none;
  }

  .nav__logo {
    top: var(--space-xl);
    left: var(--space-xl);
  }

  .nav__menu {
    position: fixed;
    inset: auto;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    background: transparent;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-lg);
    padding-left: var(--space-lg);
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    font-size: var(--text-sm);
    position: relative;
    gap: var(--space-sm);
  }

  .nav__dot {
    display: block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--color-rose-gold-light);
    background: transparent;
    transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
    flex-shrink: 0;
  }

  .nav__link.is-active .nav__dot,
  .nav__link:hover .nav__dot {
    background: var(--color-rose-gold);
    border-color: var(--color-rose-gold);
    transform: scale(1.2);
  }

  .nav__label {
    opacity: 0;
    transform: translateX(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    color: var(--color-gray-dark);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    white-space: nowrap;
    pointer-events: none;
  }

  .nav__link:hover .nav__label {
    opacity: 1;
    transform: translateX(0);
  }

  /* Gallery: 4 columns */
  .gallery__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Sections get more padding to account for sidebar nav */
  .section {
    padding-left: 80px;
  }

  /* Timeline image taller */
  .timeline__image-wrap {
    height: 280px;
  }
}

/* ===== 1280px — Desktop ===== */
@media (min-width: 1280px) {
  .hero__content {
    max-width: 1000px;
  }

  .countdown__unit {
    min-width: 100px;
  }

  .timeline {
    max-width: 1000px;
  }

  .timeline__image-wrap {
    height: 300px;
  }
}

/* ===== 1536px — Large Desktop ===== */
@media (min-width: 1536px) {
  .container {
    max-width: 1300px;
  }

  .container--wide {
    max-width: 1500px;
  }
}