:root {
  --color-easy: #81c784;
  --color-normal: #ffcc80;
  --color-hard: #ff8a80;
  --color-expert: #b388ff;
}

.level-filter-container,
.sort-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  padding: 5px 20px;
  box-sizing: border-box;
}

.filter-label {
  font-weight: bold;
  font-size: 14px;
  color: #333;
}

#difficulty-select,
#sort-select {
  padding: 6px 12px;
  font-size: 14px;
  font-weight: bold;
  border: 2px solid #46d4ff;
  border-radius: 10px;
  outline: none;
  background-color: #fff;
  cursor: pointer;
}

.range-inputs {
  display: flex;
  align-items: center;
  gap: 5px;
}

.range-inputs input[type="number"] {
  width: 60px;
  padding: 6px;
  font-size: 14px;
  font-weight: bold;
  text-align: center;
  border: 2px solid #e0e0e0;
  border-radius: 10px;
  outline: none;
  -moz-appearance: textfield;
  appearance: none;
}

.range-inputs input[type="number"]::-webkit-outer-spin-button,
.range-inputs input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.range-inputs input[type="number"]:focus {
  border-color: #0094d8;
}

.range-separator {
  font-weight: bold;
  color: #666;
}

.song-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  column-gap: 24px;
  row-gap: 34px;
  padding: 20px;
  max-width: 1400px;
  margin: 0 auto;
  box-sizing: border-box;
}

.song-card {
  width: 100%;
  min-width: 0;
  text-align: center;
  box-sizing: border-box;
}

.card-link-wrapper {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 14px;
  overflow: visible;
  transition: transform 0.3s ease;
}

.song-card:hover .card-link-wrapper {
  transform: translateY(-8px);
}

.song-card img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transition: box-shadow 0.3s ease;
  box-sizing: border-box;
  border: 4px solid transparent;
}

.song-card:hover img {
  box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.song-card p {
  display: -webkit-box;
  min-height: 4.2em;
  margin: 10px 0 0;
  font-weight: bold;
  font-size: 14px;
  line-height: 1.4;
  color: #333;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  word-break: break-all;
  transition: color 0.3s ease;
}

.song-card:hover p {
  color: #0094d8;
}

.song-card.border-easy img {
  border-color: var(--color-easy);
}

.song-card.border-normal img {
  border-color: var(--color-normal);
}

.song-card.border-hard img {
  border-color: var(--color-hard);
}

.song-card.border-expert img {
  border-color: var(--color-expert);
}

.difficulty-badge {
  position: absolute;
  top: -6px;
  left: -6px;
  z-index: 10;
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 28px;
  height: 28px;
  padding: 0 4px;
  border-radius: 14px;
  font-size: 12px;
  font-weight: bold;
  color: #ffffff;
  box-shadow: 0 3px 6px rgba(0,0,0,0.3);
  box-sizing: border-box;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.song-card.song-card--bpm-sort img,
.song-card.song-card--combo-sort img {
  border-color: #9ca3af;
}

.bpm-badge {
  position: absolute;
  bottom: -6px;
  left: -6px;
  z-index: 11;
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 34px;
  height: 28px;
  padding: 0 7px;
  border-radius: 14px;
  background: rgba(92, 99, 112, 0.94);
  color: #ffffff;
  font-size: 12px;
  font-weight: bold;
  box-shadow: 0 3px 6px rgba(0,0,0,0.25);
  box-sizing: border-box;
  text-shadow: 0 1px 2px rgba(0,0,0,0.35);
  white-space: nowrap;
}

.combo-badge {
  position: absolute;
  right: -6px;
  bottom: -6px;
  z-index: 11;
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 34px;
  height: 28px;
  padding: 0 7px;
  border-radius: 14px;
  background: rgba(92, 99, 112, 0.94);
  color: #ffffff;
  font-size: 12px;
  font-weight: bold;
  box-shadow: 0 3px 6px rgba(0,0,0,0.25);
  box-sizing: border-box;
  text-shadow: 0 1px 2px rgba(0,0,0,0.35);
  white-space: nowrap;
}
.badge-easy {
  background-color: var(--color-easy);
}

.badge-normal {
  background-color: var(--color-normal);
}

.badge-hard {
  background-color: var(--color-hard);
}

.badge-expert {
  background-color: var(--color-expert);
}

@media (max-width: 1024px) {
  .song-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: 20px;
    row-gap: 30px;
  }
}

@media (max-width: 768px) {
  .song-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .level-filter-container,
.sort-container {
    flex-direction: column;
    gap: 8px;
    border-radius: 0;
  }
}

@media (max-width: 480px) {
  .song-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 12px;
    row-gap: 22px;
    padding: 10px;
  }
  .song-card {
    min-width: 120px;
  }
  .song-card p {
    font-size: 12px;
  }
  .search-input {
    font-size: 16px;
    height: 50px;
  }
}

.song-detail-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.song-card--has-detail {
  cursor: pointer;
}

.song-card--no-detail {
  cursor: default;
}

.song-card--no-detail:hover .card-link-wrapper {
  transform: none;
}

.song-card--no-detail:hover img {
  box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}

.song-card--no-detail:hover p {
  color: #333;
}