.concerts-page {
  width: min(100% - 3rem, 1440px);
  margin: 0 auto;
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.concerts-view-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  width: min(100% - 3rem, 1440px);
  margin: 0 auto 3rem;
  padding: 1.25rem 0;
  overflow-x: auto;
  white-space: nowrap;
}

.concerts-page > .concerts-view-nav { width: 100%; }

.concerts-view-nav__link {
  padding: .25rem 0;
  border-bottom: 2px solid transparent;
  color: var(--color-text, #171717);
  text-decoration: none;
}

.concerts-view-nav__link:hover,
.concerts-view-nav__link:focus-visible,
.concerts-view-nav__link--active {
  border-bottom-color: var(--color-accent, #a00000);
  color: var(--color-accent, #a00000);
}

.concerts-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.5rem;
}

.concerts-category__section { margin-top: clamp(4rem, 8vw, 7rem); }

.concerts-category__section h2 {
  margin: 0;
  font-family: var(--font-heading, serif);
  font-size: clamp(1.5rem, 1.8vw, 3rem);
  line-height: 1.1;
}

.concerts-category__section hr {
  margin: .75rem 0 2rem;
  border: 0;
  border-top: 1px solid currentColor;
  opacity: .25;
}

.motion-ready .concert-card.reveal:not(.is-visible) {
  opacity: 0;
  transform: translate3d(0, 20%, 0);
}

.motion-ready .concert-card.reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  transition: opacity .7s ease, transform .7s ease;
}

.concerts-timeline {
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 1.5rem;
  scrollbar-width: thin;
  scrollbar-color: #888 var(--color-background, #fff);
  touch-action: pan-y;
  cursor: grab;
}

.concerts-timeline.is-dragging {
  cursor: grabbing;
  user-select: none;
}

.concerts-timeline::-webkit-scrollbar { height: 6px; }
.concerts-timeline::-webkit-scrollbar-track { background: var(--color-background, #fff); }
.concerts-timeline::-webkit-scrollbar-thumb { border-radius: 999px; background: #888; }
.concerts-timeline::-webkit-scrollbar-button { display: none; }

.concerts-timeline__track { display: flex; width: max-content; }

.concerts-timeline__year {
  position: relative;
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
}

.concerts-timeline__year-label {
  position: sticky;
  left: 0;
  right: 0;
  z-index: 2;
  align-self: flex-end;
  min-width: 8rem;
  margin: 0 .75rem 1rem;
  padding: .45rem 0 .35rem;
  border-bottom: 1px solid currentColor;
  background: var(--color-background, #fff);
  color: var(--color-accent, #a00000);
  font-family: var(--font-heading, serif);
  font-size: 1.25rem;
  font-weight: 700;
}

.concerts-timeline__months { display: flex; }

.concerts-timeline__month {
  display: flex;
  flex: 0 0 140px;
  flex-direction: column;
  gap: .75rem;
  padding: 0 .75rem;
}

.concerts-timeline__month h2 { margin: 0; font-size: 1rem; }

.concert-coverflow {
  position: relative;
  margin: 0 calc(50% - 50vw) 2.5rem;
  overflow: hidden;
}

/* cards 이펙트는 슬라이드가 컨테이너 폭을 그대로 쓰므로
   트랙 자체를 중앙 카드 크기(와이어프레임 ~430px)로 제한한다. */
.concert-coverflow__track {
  width: min(72vw, 430px);
  margin: 0 auto;
  padding: 2rem 0;
}

.concert-coverflow__track .concert-card { width: 100%; }

.concert-coverflow__controls {
  display: flex;
  justify-content: flex-end;
  gap: .5rem;
  width: min(100% - 3rem, 1440px);
  margin: 1rem auto 0;
}

.concert-coverflow__controls button {
  width: 44px;
  height: 44px;
  border: 1px solid;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}

.concert-coverflow__controls button:disabled { cursor: default; opacity: .35; }

.concert-coverflow__info {
  width: min(100% - 3rem, 1440px);
  margin: 1.5rem auto 0;
  text-align: center;
}

.concert-coverflow__info-panel { display: none; }
.concert-coverflow__info-panel.is-active { display: block; }
.concert-coverflow__info-panel time,
.concert-coverflow__title { display: block; margin-top: .75rem; }

.concert-coverflow__title {
  font-family: var(--font-heading, serif);
  font-size: clamp(1.25rem, 2vw, 2rem);
  text-decoration: none;
}

@media (max-width: 1200px) {
  .concerts-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 800px) {
  .concerts-grid { grid-template-columns: repeat(2, 1fr); gap: .75rem; }
  .concerts-view-nav { gap: 1rem; }
  .concerts-timeline__month { flex-basis: 110px; padding: 0 .5rem; }
  .concert-coverflow__track { width: 78vw; }
}

.concerts-timeline img,
.concert-coverflow img {
  -webkit-user-drag: none;
  user-select: none;
}