.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--ifm-card-background-color);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  height: 100%;
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.04),
    0 4px 12px rgba(0, 0, 0, 0.04);
  transition:
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.12),
    0 4px 12px rgba(0, 0, 0, 0.08);
  text-decoration: none;
  color: inherit;
}

.card:hover::before {
  opacity: 1;
  background: linear-gradient(135deg, var(--ifm-color-primary) 0%, rgba(37, 99, 235, 0.3) 100%);
}

[data-theme='dark'] .card {
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.2),
    0 4px 12px rgba(0, 0, 0, 0.15);
}

[data-theme='dark'] .card:hover {
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.4),
    0 8px 24px rgba(37, 99, 235, 0.15);
}

/* Image Container */
.imageContainer {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    var(--ifm-color-emphasis-100) 0%,
    var(--ifm-color-emphasis-200) 100%
  );
}

.imageContainer::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, transparent 50%, rgba(0, 0, 0, 0.03) 100%);
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.card:hover .imageContainer::after {
  opacity: 0;
}

.image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover .image {
  transform: scale(1.08);
}

.placeholderImage {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--ifm-color-primary) 0%, #1d4ed8 50%, #1e40af 100%);
  position: relative;
  overflow: hidden;
}

.placeholderImage::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%,
  100% {
    transform: translate(-10%, -10%) rotate(0deg);
    opacity: 0.5;
  }
  50% {
    transform: translate(10%, 10%) rotate(180deg);
    opacity: 1;
  }
}

.placeholderIcon {
  font-size: 2.5rem;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
}

/* Image Overlay (for events like BSides SF 2026) */
.imageOverlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  background: linear-gradient(
    135deg,
    rgba(10, 15, 26, 0.6) 0%,
    rgba(10, 15, 26, 0.2) 50%,
    transparent 70%
  );
  z-index: 1;
  text-align: left;
  padding: 1rem;
}

.overlayTitle {
  font-size: 1.5rem;
  font-weight: 800;
  color: #f97316;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.7);
  margin-bottom: 0.125rem;
}

.overlayMeta {
  font-size: 0.75rem;
  font-weight: 600;
  color: #ffffff;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.7);
}

/* Status Badge */
.badge {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  z-index: 2;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.upcoming {
  background: rgba(37, 99, 235, 0.9);
  color: white;
  box-shadow:
    0 2px 8px rgba(37, 99, 235, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.past {
  background: rgba(30, 30, 30, 0.75);
  color: rgba(255, 255, 255, 0.9);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* Content */
.content {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  flex: 1;
  background: var(--ifm-card-background-color);
}

.name {
  font-size: 1.125rem;
  font-weight: 650;
  margin: 0 0 0.875rem 0;
  line-height: 1.35;
  color: var(--ifm-heading-color);
  letter-spacing: -0.01em;
}

.meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.metaItem {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.8125rem;
  color: var(--ifm-color-emphasis-600);
  font-weight: 450;
}

.icon {
  width: 0.9375rem;
  height: 0.9375rem;
  flex-shrink: 0;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.7;
}

.description {
  font-size: 0.875rem;
  color: var(--ifm-color-emphasis-600);
  line-height: 1.6;
  margin: 0 0 1.25rem 0;
  flex: 1;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ifm-color-primary);
  margin-top: auto;
  transition: gap 0.2s ease;
}

.card:hover .cta {
  gap: 0.5rem;
}

.ctaIcon {
  width: 0.875rem;
  height: 0.875rem;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card:hover .ctaIcon {
  transform: translateX(3px);
}

/* Past event muted state */
.card[data-event-status='past'] {
  opacity: 0.85;
}

.card[data-event-status='past']:hover {
  opacity: 1;
}

.card[data-event-status='past'] .imageContainer::after {
  background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.05) 100%);
}

/* Dark mode adjustments */
[data-theme='dark'] .content {
  background: var(--ifm-card-background-color);
}

[data-theme='dark'] .badge.past {
  background: rgba(60, 60, 60, 0.85);
}

[data-theme='dark'] .description {
  color: var(--ifm-color-emphasis-500);
}

[data-theme='dark'] .imageContainer {
  background: linear-gradient(
    135deg,
    var(--ifm-color-emphasis-200) 0%,
    var(--ifm-color-emphasis-100) 100%
  );
}

/* Mobile optimizations */
@media (max-width: 768px) {
  .card {
    border-radius: 12px;
  }

  .card::before {
    border-radius: 12px;
  }

  .card:hover {
    transform: translateY(-4px);
  }

  .content {
    padding: 1.25rem;
  }

  .name {
    font-size: 1rem;
  }

  .metaItem {
    font-size: 0.75rem;
  }

  .description {
    font-size: 0.8125rem;
    margin-bottom: 1rem;
  }

  .placeholderIcon {
    font-size: 2rem;
  }

  .badge {
    top: 12px;
    left: 12px;
    padding: 5px 12px;
    font-size: 0.625rem;
  }

  .overlayTitle {
    font-size: 1.25rem;
  }

  .overlayMeta {
    font-size: 0.75rem;
  }
}

/* Hover state enhancement for touch devices */
@media (hover: none) {
  .card:hover {
    transform: none;
    box-shadow:
      0 1px 3px rgba(0, 0, 0, 0.04),
      0 4px 12px rgba(0, 0, 0, 0.04);
  }

  .card:hover::before {
    opacity: 0;
  }

  .card:active {
    transform: scale(0.98);
  }
}