/**
 * Styles for Our Partners / Airlines 5-Column Grid Section
 * Pixel-perfect replica of reference design with dual logo hover transition.
 */

.partners-section {
  position: relative;
  background-color: #ffffff;
  padding: 6rem 0;
  z-index: 4;
  border-top: 1px solid #eaeaea;
}

/* Header layout matching screenshot */
.partners-header-grid {
  display: grid;
  grid-template-columns: 1fr 4fr;
  gap: 2rem;
  align-items: baseline;
  margin-bottom: 2.5rem;
}

.partners-label {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  color: #111111;
  margin: 0;
}

.partners-category {
  font-family: 'Syne', sans-serif;
  font-size: 0.99rem;
  font-weight: 800;
  color: #0c0c0c;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin: 0;
}

/* 5-Column Grid */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid #eaeaea;
  border-left: 1px solid #eaeaea;
  position: relative;
}

.partner-card {
  position: relative;
  border-right: 1px solid #eaeaea;
  border-bottom: 1px solid #eaeaea;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background-color: #ffffff;
  transition: background-color 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  overflow: visible;
}

.partner-card:hover {
  background-color: #fcfcfc;
}

/* Pixel-perfect Crosshair '+' dot marks at border intersections */
.partner-card::before,
.partner-card::after {
  content: '';
  position: absolute;
  z-index: 10;
  pointer-events: none;
}

/* Top-Right Intersection Mark */
.partner-card::before {
  top: -4px;
  right: -4px;
  width: 7px;
  height: 7px;
  background: 
    linear-gradient(#000, #000) no-repeat center / 7px 1px,
    linear-gradient(#000, #000) no-repeat center / 1px 7px;
  opacity: 0.65;
}

/* Bottom-Right Intersection Mark */
.partner-card::after {
  bottom: -4px;
  right: -4px;
  width: 7px;
  height: 7px;
  background: 
    linear-gradient(#000, #000) no-repeat center / 7px 1px,
    linear-gradient(#000, #000) no-repeat center / 1px 7px;
  opacity: 0.65;
}

/* Dual Logo Image Hover Transition */
.partner-logo-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.partner-logo {
  max-width: 80%;
  max-height: 52px;
  width: auto;
  height: auto;
  object-fit: contain;
  transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1), transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), filter 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  user-select: none;
}

.partner-logo--default {
  opacity: 0.9;
  filter: grayscale(100%);
  transform: scale(1);
}

.partner-logo--hover {
  position: absolute;
  opacity: 0;
  transform: scale(0.96);
  filter: none;
}

.partner-card:hover .partner-logo--default {
  opacity: 0;
  transform: scale(1.05);
}

.partner-card:hover .partner-logo--hover {
  opacity: 1;
  transform: scale(1);
  filter: none;
}

/* Responsive Grid Breakpoints */
@media (max-width: 1199px) {
  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .partners-header-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .partner-card {
    height: 130px;
  }
}

/* Extra Partner Cards (Collapsible) */
.partner-card--extra {
  display: none;
}

.partners-grid.is-expanded .partner-card--extra {
  display: flex;
  animation: partnerCardFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes partnerCardFadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* On 5-column desktop, center single leftover card in row 14 */
@media (min-width: 1200px) {
  .partners-grid .partner-card:last-child:nth-child(5n + 1) {
    grid-column: 3;
    border-left: 1px solid #eaeaea;
  }
}

/* Load More / View All Toggle Button */
.partners-toggle-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 3.5rem;
  position: relative;
  z-index: 6;
}

.btn-partners-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.95rem 2.4rem;
  background-color: #0c0c0c;
  color: #ffffff;
  border: 1px solid #0c0c0c;
  border-radius: 9999px;
  font-family: 'Syne', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
}

.btn-partners-toggle:hover {
  background-color: #1e1e1e;
  border-color: #1e1e1e;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
}

.btn-partners-toggle:active {
  transform: translateY(0);
}

.btn-partners-toggle__icon {
  width: 16px;
  height: 16px;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-partners-toggle[aria-expanded="true"] .btn-partners-toggle__icon {
  transform: rotate(180deg);
}