.year-grid {
  --year-grid-gap: clamp(1rem, 2.5vw, 1.75rem);
  display: grid;
  grid-template-columns: repeat(5, minmax(8.5rem, 1fr));
  gap: var(--year-grid-gap);
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  isolation: isolate;
}

.year-card {
  display: flex;
  overflow: visible;
  position: relative;
  z-index: 0;
}

.year-card:hover {
  z-index: 200;
}

.year-card__link {
  flex: 1;
  display: grid;
  place-items: center;
  padding: clamp(1.25rem, 3vw, 2rem);
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--color-border) 80%, transparent);
  background: color-mix(in srgb, var(--color-surface) 85%, transparent);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: visible;
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  z-index: 1;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.year-card__link--image {
  color: #f8f3e7;
  background-image:
    linear-gradient(180deg, rgba(10, 12, 16, 0.25) 0%, rgba(10, 12, 16, 0.7) 100%),
    var(--year-card-image);
  background-size: cover;
  background-position: center;
  border-color: color-mix(in srgb, #ffffff 28%, var(--color-border));
}

.year-card__label {
  display: block;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.year-card__link--image .year-card__label {
  text-shadow: 0 8px 18px rgba(8, 10, 12, 0.55);
  transition: opacity 800ms ease 2s;
}

.year-card__link--image.is-fading .year-card__label,
.year-card__link--image:hover .year-card__label {
  opacity: 0;
  transition: opacity 160ms ease;
}

.year-card__link--image.is-returning .year-card__label {
  opacity: 1;
  transition: opacity 800ms ease;
}

.year-card__link:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
  border-color: color-mix(in srgb, var(--color-primary) 50%, var(--color-border));
  color: var(--color-text);
  z-index: 210;
}

.year-card__link--image:hover {
  color: #f8f3e7;
}

.year-card__tooltip {
  display: none;
}

.year-tooltip-portal {
  position: fixed;
  left: 0;
  top: 0;
  width: min(36rem, 94vw);
  padding: 1rem 1.1rem 1.1rem;
  border-radius: 1.1rem;
  background:
    radial-gradient(120px 90px at var(--tooltip-spot-x, 70%) var(--tooltip-spot-y, 20%),
      rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0) 60%),
    linear-gradient(150deg, rgba(9, 12, 18, 0.95), rgba(22, 26, 36, 0.82));
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fffaf1;
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.55;
  text-align: left;
  opacity: 0;
  transform: translate(-50%, -92%) scale(0.98);
  pointer-events: none;
  backdrop-filter: blur(10px) saturate(120%);
  box-shadow: 0 22px 60px rgba(4, 8, 14, 0.55);
  z-index: 1000;
  transition: opacity 220ms ease, transform 220ms ease;
}

.year-tooltip-portal.is-visible {
  opacity: 1;
  transform: translate(-50%, -100%) scale(1);
  pointer-events: auto;
  cursor: default;
}

.year-card.is-tooltip-visible {
  z-index: 240;
}

.year-card__link.is-tooltip-visible {
  z-index: 250;
}


.year-card__tooltip-title {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 249, 233, 0.78);
}

.year-card__tooltip-title::after {
  content: "";
  display: inline-block;
  width: 1.1rem;
  height: 1px;
  background: rgba(255, 249, 233, 0.4);
}

.year-card__tooltip-body {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  text-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

.year-card__link:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-primary) 65%, transparent);
  outline-offset: 3px;
  box-shadow: var(--shadow-soft);
}

.year-grid__empty {
  grid-column: 1 / -1;
  border-radius: var(--radius-md);
  border: 1px dashed color-mix(in srgb, var(--color-border) 70%, transparent);
  background: color-mix(in srgb, var(--color-surface) 70%, transparent);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  text-align: center;
}

.year-grid__empty-text {
  margin: 0;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 2vw, 1.1rem);
}

@media (prefers-reduced-motion: reduce) {
  .year-card__link {
    transition: none;
  }

  .year-card__link:hover {
    transform: none;
  }

  .year-card__link--image .year-card__label {
    transition: none;
  }

  .year-card__link--image.is-fading .year-card__label,
  .year-card__link--image.is-returning .year-card__label {
    transition: none;
  }

  .year-tooltip-portal {
    transition: none;
  }
}

@media (max-width: 1100px) {
  .year-grid {
    grid-template-columns: repeat(4, minmax(8.5rem, 1fr));
  }
}

@media (max-width: 900px) {
  .year-grid {
    grid-template-columns: repeat(3, minmax(8.5rem, 1fr));
  }
}

@media (max-width: 640px) {
  .year-grid {
    grid-template-columns: repeat(2, minmax(8.5rem, 1fr));
  }
}

@media (max-width: 720px) {
  .year-grid {
    --year-grid-gap: 0.75rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .year-card__link {
    padding: clamp(1rem, 5vw, 1.3rem);
    font-size: clamp(1.05rem, 5.2vw, 1.32rem);
  }
}

@media (max-width: 420px) {
  .year-grid {
    grid-template-columns: 1fr;
  }
}