/* ── BACKDROP ────────────────────────────────────── */
.detail-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 202;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.detail-backdrop.open { opacity: 1; pointer-events: all; }

/* ── PANEL ───────────────────────────────────────── */
.detail-panel {
  position: fixed;
  top: 0; right: 0;
  width: 600px;
  height: 100vh;
  background: var(--gray-900);
  z-index: 203;
  transform: translateX(110%);
  transition: transform 0.42s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: flex;
  flex-direction: column;
  border-left: 1px solid rgba(255,255,255,0.07);
  overflow: hidden;
}
.detail-panel.open { transform: translateX(0); }

.detail-close {
  position: absolute;
  top: 22px; right: 24px;
  z-index: 10;
  background: none;
  border: none;
  color: var(--white);
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
  padding: 4px 8px;
  opacity: 0.45;
  transition: opacity 0.2s;
}
.detail-close:hover { opacity: 1; }

/* ── BODY ────────────────────────────────────────── */
.detail-body {
  flex: 1;
  display: flex;
  flex-direction: row;
  overflow: hidden;
}

/* ── GALLERY (left) ──────────────────────────────── */
.detail-gallery {
  width: 52%;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  padding: 28px 12px 28px 28px;
  overflow-y: auto;
}
.detail-gallery::-webkit-scrollbar { display: none; }

.detail-img-wrap {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  background: var(--gray-800);
  flex-shrink: 0;
}

.detail-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity 0.15s ease;
}
.detail-img-wrap img.fade { opacity: 0; }

/* Mobile-only arrows */
.detail-arrow {
  display: none;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px; height: 40px;
  background: rgba(0,0,0,0.55);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 50%;
  color: var(--white);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5;
  transition: background 0.2s, border-color 0.2s;
}
.detail-arrow:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.6); }
.detail-arrow.prev { left: 14px; }
.detail-arrow.next { right: 14px; }

.detail-thumbs {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.detail-thumb {
  width: 54px; height: 68px;
  object-fit: cover;
  cursor: pointer;
  opacity: 0.6;
  border: 1px solid transparent;
  transition: opacity 0.2s, border-color 0.2s;
  display: block;
}
.detail-thumb:hover { opacity: 0.7; }
.detail-thumb.active { opacity: 1; border-color: var(--white); }

/* ── INFO (right) ────────────────────────────────── */
.detail-info {
  flex: 1;
  padding: 56px 28px 40px 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.detail-info::-webkit-scrollbar { width: 2px; }
.detail-info::-webkit-scrollbar-track { background: transparent; }
.detail-info::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); }

.detail-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin-bottom: 10px;
}

.detail-price-wrap { margin-bottom: 22px; }

.detail-price-single {
  font-size: 15px;
  font-weight: 300;
  color: var(--gray-400);
  letter-spacing: 0.04em;
}

.detail-price-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.detail-price-sale {
  font-size: 17px;
  font-weight: 600;
  color: var(--white);
}
.detail-discount-badge {
  font-size: 10px;
  font-weight: 700;
  color: var(--white);
  background: rgba(255,255,255,0.14);
  padding: 2px 7px;
}
.detail-price-original {
  font-size: 13px;
  font-weight: 300;
  color: var(--gray-600);
  text-decoration: line-through;
}

.detail-divider {
  width: 100%;
  height: 1px;
  background: rgba(255,255,255,0.07);
  margin: 20px 0;
}

.detail-size-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.detail-size-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}
.detail-size-guide {
  font-size: 11px;
  color: var(--gray-400);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gray-600);
  transition: color 0.2s;
  background: none;
  border: none;
  font-family: 'Pretendard', sans-serif;
}
.detail-size-guide:hover { color: var(--white); }

.detail-sizes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}
.detail-sizes.shake { animation: shake 0.38s ease; }

.detail-color-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}
.detail-color-swatches.shake { animation: shake 0.38s ease; }

.color-swatch {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  outline: 2px solid transparent;
  outline-offset: 3px;
  transition: transform 0.15s, outline-color 0.15s;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.18);
}
.color-swatch:hover { transform: scale(1.12); }
.color-swatch.selected { outline: 2px solid var(--white); }
.color-swatch.is-light { box-shadow: inset 0 0 0 1px rgba(0,0,0,0.18); }
.color-swatch.is-light.selected { outline-color: rgba(200,200,200,0.9); }

.size-btn {
  background: none;
  border: 1px solid rgba(255,255,255,0.18);
  color: var(--white);
  font-family: 'Pretendard', sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 9px 16px;
  min-width: 50px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
}
.size-btn:hover:not(.sold-out) { border-color: rgba(255,255,255,0.55); }
.size-btn.selected { background: var(--white); color: var(--black); border-color: var(--white); }
.size-btn.sold-out { opacity: 0.22; cursor: not-allowed; text-decoration: line-through; }

.detail-size-error {
  font-size: 11px;
  color: rgba(255,110,110,0.9);
  letter-spacing: 0.04em;
  height: 18px;
  margin-bottom: 18px;
  opacity: 0;
  transition: opacity 0.2s;
}
.detail-size-error.visible { opacity: 1; }

.detail-qty-wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.detail-qty-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}
.detail-qty-control {
  display: flex;
  align-items: center;
  gap: 10px;
}

.detail-btn-row {
  display: flex;
  gap: 8px;
  margin-top: auto;
}
.detail-add-btn {
  flex: 1;
  background: none;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.5);
  font-family: 'Pretendard', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  padding: 17px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
}
.detail-add-btn:hover { border-color: var(--white); background: rgba(255,255,255,0.06); }
.detail-add-btn:active { transform: scale(0.99); }

.detail-buy-btn {
  flex: 1;
  background: var(--white);
  color: var(--black);
  border: none;
  font-family: 'Pretendard', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  padding: 17px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}
.detail-buy-btn:hover { background: var(--gray-100); }
.detail-buy-btn:active { transform: scale(0.99); }

/* ── MOBILE ──────────────────────────────────────── */
@media (max-width: 767px) {
  .detail-panel {
    width: 100%;
    height: 100%;
    top: 0; left: 0;
    transform: translateY(100%);
    border-left: none;
    border-top: 1px solid rgba(255,255,255,0.08);
  }
  .detail-panel.open { transform: translateY(0); }

  .detail-body {
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
    height: 100%;
  }

  .detail-gallery {
    width: 100%;
    padding: 0;
    overflow: visible;
    flex-shrink: 0;
  }

  .detail-img-wrap { aspect-ratio: 3/4; }

  .detail-arrow { display: flex; }

  .detail-thumbs { display: none; }

  .detail-info {
    padding: 24px 20px 48px;
    overflow: visible;
    flex-shrink: 0;
  }

  .detail-add-btn { margin-top: 24px; }
}

/* ── SIZE GUIDE MODAL ────────────────────────────── */
.size-guide-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.size-guide-backdrop.open { opacity: 1; pointer-events: all; }

.size-guide-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -48%) scale(0.96);
  z-index: 301;
  max-width: 560px;
  width: 90%;
  background: var(--gray-900);
  border: 1px solid rgba(255,255,255,0.08);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.size-guide-modal.open {
  opacity: 1;
  pointer-events: all;
  transform: translate(-50%, -50%) scale(1);
}

.size-guide-modal img {
  display: block;
  width: 100%;
  height: auto;
}

.size-guide-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--white);
  font-size: 22px;
  line-height: 1;
  padding: 4px 8px;
  cursor: pointer;
  opacity: 0.45;
  transition: opacity 0.2s;
  z-index: 1;
}
.size-guide-close:hover { opacity: 1; }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-7px); }
  60% { transform: translateX(7px); }
}