/* ============================================================================
   Promotion Area - 프로모션 영역 스타일
   ============================================================================ */

/* ===== 프로모션 영역 컨테이너 ===== */
.promotion-area {
  width: 100%;
  position: relative;
}

.promotion-area__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* ===== 타이틀 & 설명 ===== */
.promotion-area__title {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  text-align: center;
  margin: 0 0 var(--space-4);
  line-height: var(--line-height-tight);
}

.promotion-area__description {
  font-size: var(--fs-lg);
  color: var(--c-fg-secondary);
  text-align: center;
  margin: 0 0 var(--space-10);
  line-height: var(--line-height-relaxed);
}

/* ===== 프로모션 그리드 ===== */
.promotion-area__grid {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

/* 반응형 그리드 (모바일 우선) */
@media (min-width: 640px) {
  .promotion-area__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .promotion-area__grid {
    /* grid-template-columns는 인라인 스타일로 제어 */
  }
}

/* ===== 프로모션 카드 ===== */
.promotion-card {
  background: var(--card-bg);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.promotion-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-4px);
}

/* ===== 카드 이미지 ===== */
.promotion-card__image {
  position: relative;
  width: 100%;
  padding-top: 66.67%; /* 3:2 비율 */
  overflow: hidden;
  background: var(--c-bg);
}

.promotion-card__image a {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.promotion-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.promotion-card:hover .promotion-card__image img {
  transform: scale(1.05);
}

/* ===== 카드 컨텐츠 ===== */
.promotion-card__content {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

/* ===== 배지 ===== */
.promotion-card__badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  width: fit-content;
}

/* ===== 카드 타이틀 ===== */
.promotion-card__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  line-height: var(--line-height-tight);
  margin: 0;
}

.promotion-card__title a {
  color: var(--c-fg);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.promotion-card__title a:hover {
  color: var(--c-brand);
}

/* ===== 카드 설명 ===== */
.promotion-card__description {
  font-size: var(--fs-base);
  color: var(--c-fg-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0;
  flex: 1;
}

/* ===== 가격 ===== */
.promotion-card__price {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.promotion-card__price--original {
  font-size: var(--fs-sm);
  color: var(--c-fg-tertiary);
  text-decoration: line-through;
}

.promotion-card__price--current {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--c-brand);
}

/* ===== 카드 버튼 ===== */
.promotion-card__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  transition: all var(--transition-normal);
  margin-top: var(--space-3);
  box-shadow: var(--shadow-sm);
}

.promotion-card__button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  opacity: 0.9;
}

/* ===== 레이아웃 변형 ===== */

/* Banner 레이아웃 (전체 너비) */
.promotion-area__grid--banner {
  grid-template-columns: 1fr;
}

.promotion-area__grid--banner .promotion-card {
  flex-direction: row;
}

.promotion-area__grid--banner .promotion-card__image {
  width: 50%;
  padding-top: 0;
  min-height: 400px;
}

.promotion-area__grid--banner .promotion-card__content {
  width: 50%;
  padding: var(--space-10);
  justify-content: center;
}

@media (max-width: 768px) {
  .promotion-area__grid--banner .promotion-card {
    flex-direction: column;
  }

  .promotion-area__grid--banner .promotion-card__image,
  .promotion-area__grid--banner .promotion-card__content {
    width: 100%;
  }

  .promotion-area__grid--banner .promotion-card__image {
    padding-top: 56.25%; /* 16:9 비율 */
    min-height: 0;
  }
}

/* Grid-2 레이아웃 */
@media (min-width: 1024px) {
  .promotion-area__grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Grid-3 레이아웃 */
@media (min-width: 1024px) {
  .promotion-area__grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Grid-4 레이아웃 */
@media (min-width: 640px) {
  .promotion-area__grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .promotion-area__grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ===== Cards 레이아웃 (컴팩트 카드) ===== */
.promotion-area__grid--cards .promotion-card {
  box-shadow: var(--shadow-sm);
}

.promotion-area__grid--cards .promotion-card__image {
  padding-top: 75%; /* 4:3 비율 */
}

.promotion-area__grid--cards .promotion-card__content {
  padding: var(--space-4);
  gap: var(--space-2);
}

.promotion-area__grid--cards .promotion-card__title {
  font-size: var(--fs-lg);
}

.promotion-area__grid--cards .promotion-card__description {
  font-size: var(--fs-sm);
}

/* ===== 이미지 없는 카드 (텍스트/아이콘만) ===== */
.promotion-card--no-image {
  text-align: center;
  justify-content: center;
  padding: var(--space-8);
  min-height: 300px;
  background: linear-gradient(135deg, var(--c-brand-light) 0%, #ffffff 100%);
}

.promotion-card--no-image .promotion-card__content {
  padding: 0;
  align-items: center;
}

/* ===== 호버 효과 변형 ===== */
.promotion-card--hover-zoom {
  overflow: hidden;
}

.promotion-card--hover-zoom:hover .promotion-card__image img {
  transform: scale(1.1);
}

.promotion-card--hover-overlay .promotion-card__image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.promotion-card--hover-overlay:hover .promotion-card__image::after {
  opacity: 1;
}

/* ===== 반응형 조정 ===== */
@media (max-width: 1024px) {
  .promotion-area__title {
    font-size: var(--fs-2xl);
  }

  .promotion-area__description {
    font-size: var(--fs-base);
    margin-bottom: var(--space-8);
  }

  .promotion-area__grid {
    gap: var(--space-4);
  }
}

@media (max-width: 640px) {
  .promotion-area__container {
    padding: 0 var(--space-3);
  }

  .promotion-area__title {
    font-size: var(--fs-xl);
    margin-bottom: var(--space-3);
  }

  .promotion-area__description {
    font-size: var(--fs-sm);
    margin-bottom: var(--space-6);
  }

  .promotion-area__grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .promotion-card__content {
    padding: var(--space-4);
  }

  .promotion-card__title {
    font-size: var(--fs-lg);
  }

  .promotion-card__description {
    font-size: var(--fs-sm);
  }

  .promotion-card__button {
    width: 100%;
  }
}

/* ===== 애니메이션 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.promotion-card {
  animation: fadeInUp 0.6s ease-out;
}

.promotion-card:nth-child(1) {
  animation-delay: 0.1s;
}

.promotion-card:nth-child(2) {
  animation-delay: 0.2s;
}

.promotion-card:nth-child(3) {
  animation-delay: 0.3s;
}

.promotion-card:nth-child(4) {
  animation-delay: 0.4s;
}

/* ===== 접근성 ===== */
@media (prefers-reduced-motion: reduce) {
  .promotion-card,
  .promotion-card__image img,
  .promotion-card__button,
  .promotion-card__title a {
    animation: none;
    transition: none;
  }

  .promotion-card:hover {
    transform: none;
  }

  .promotion-card:hover .promotion-card__image img {
    transform: none;
  }
}

/* ===== 로딩 상태 ===== */
.promotion-card--loading {
  pointer-events: none;
  opacity: 0.6;
}

.promotion-card--loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  margin: -20px 0 0 -20px;
  border: 3px solid var(--c-border);
  border-top-color: var(--c-brand);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ===== 다크모드 지원 (선택사항) ===== */
@media (prefers-color-scheme: dark) {
  .promotion-card {
    background: #2d3748;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  }

  .promotion-card__title a {
    color: #ffffff;
  }

  .promotion-card__description {
    color: #cbd5e0;
  }

  .promotion-card--no-image {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
  }
}