/* ===================================
   CSS Reset & Base Styles
   =================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;

  /* 데스크톱 배경색 */
  background-color: #e8e8e8;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
  overflow-x: hidden;

  /* 데스크톱에서도 모바일 뷰로 보이게 */
  max-width: 480px;
  margin: 0 auto;
  box-shadow: 0 0 30px rgba(0,0,0,0.15);
  position: relative;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* ===================================
   CSS Variables (공통)
   =================================== */

:root {
  /* 간격 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;

  /* 타이포그래피 */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 48px;
  --font-size-4xl: 64px;

  /* 애니메이션 */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* z-index */
  --z-toast: 9999;
  --z-modal: 9000;
  --z-header: 1000;
  --z-base: 1;

  /* 반응형 브레이크포인트 */
  --breakpoint-sm: 480px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
}

/* ===================================
   Utility Classes
   =================================== */

/* 간격 유틸리티 */
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-xs { padding-top: var(--spacing-xs); }
.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }

.pb-xs { padding-bottom: var(--spacing-xs); }
.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }

/* 텍스트 정렬 */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* 숨김 */
.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* Flexbox 유틸리티 */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center { justify-content: center; align-items: center; }
.flex-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }

/* ===================================
   공통 컴포넌트
   =================================== */

/* 컨테이너 */
.container {
  max-width: 768px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* 섹션 */
.section {
  padding: var(--spacing-2xl) 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

/* 버튼 */
.btn {
  display: inline-block;
  padding: 12px 24px;
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: center;
  border-radius: 8px;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  outline: none;
}

.btn-primary {
  background-color: #333;
  color: #fff;
}

.btn-primary:hover {
  background-color: #555;
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: #f5f5f5;
  color: #333;
}

.btn-secondary:hover {
  background-color: #e0e0e0;
}

.btn-block {
  width: 100%;
  display: block;
}

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* 카드 */
.card {
  background-color: #fff;
  border-radius: 12px;
  padding: var(--spacing-md);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transition: transform var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
}

/* 토스트 알림 */
.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  background-color: #333;
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: var(--font-size-sm);
  z-index: var(--z-toast);
  opacity: 0;
  animation: toast-fade-in 0.3s ease forwards;
}

@keyframes toast-fade-in {
  to {
    opacity: 1;
  }
}

.toast.hiding {
  animation: toast-fade-out 0.3s ease forwards;
}

@keyframes toast-fade-out {
  to {
    opacity: 0;
  }
}

/* 모달 */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.9);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.modal.active {
  opacity: 1;
  pointer-events: all;
}

.modal-content {
  max-width: 90%;
  max-height: 90%;
  position: relative;
}

.modal-close {
  position: absolute;
  top: -40px;
  right: 0;
  background-color: transparent;
  color: #fff;
  font-size: 32px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
}

.modal-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(255,255,255,0.2);
  color: #fff;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.modal-nav:hover {
  background-color: rgba(255,255,255,0.3);
}

.modal-nav.prev {
  left: var(--spacing-md);
}

.modal-nav.next {
  right: var(--spacing-md);
}

/* 갤러리 네비게이션 버튼 */
.gallery-container-wrapper {
  position: relative;
}

.gallery-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(0,0,0,0.5);
  color: white;
  border: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  transition: all 0.3s;
  pointer-events: auto;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.gallery-nav-btn:hover {
  background-color: rgba(0,0,0,0.7);
}

.gallery-nav-btn:active {
  transform: translateY(-50%) scale(0.95);
}

.gallery-nav-btn.prev {
  left: 16px;
}

.gallery-nav-btn.next {
  right: 16px;
}

/* 갤러리 인디케이터 */
.gallery-indicators {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  z-index: 50;
  position: relative;
}

.indicator-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: rgba(0,0,0,0.2);
  transition: all 0.3s;
  cursor: pointer;
}

.indicator-dot.active {
  width: 24px;
  border-radius: 4px;
  background-color: rgba(0,0,0,0.6);
}

@media (max-width: 768px) {
  .gallery-nav-btn {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  .gallery-nav-btn.prev {
    left: 8px;
  }

  .gallery-nav-btn.next {
    right: 8px;
  }
}

/* CTA 버튼 그룹 */
.cta-container {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  max-width: 480px;
  width: 100%;
  background-color: #fff;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
  padding: var(--spacing-sm);
  z-index: var(--z-header);
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.cta-container .btn {
  flex: 1;
  min-width: calc(50% - var(--spacing-xs) / 2);
  font-size: 13px;
  padding: 10px 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 480px) {
  .cta-container .btn {
    font-size: 12px;
    padding: 10px 6px;
  }
}

/* ===================================
   반응형
   =================================== */

@media (max-width: 768px) {
  .section {
    min-height: auto;
    padding: var(--spacing-xl) 0;
  }

  .section-title {
    font-size: var(--font-size-xl);
  }

  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* ===================================
   스크롤 스무스
   =================================== */

html.smooth-scroll {
  scroll-behavior: smooth;
}

/* ===================================
   페이드인 애니메이션
   =================================== */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===================================
   캘린더 및 실시간 카운터
   =================================== */

.calendar-section {
  padding: var(--spacing-2xl) var(--spacing-md);
  text-align: center;
}

.calendar-title {
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 4px;
  margin-bottom: var(--spacing-sm);
  color: #333;
}

.calendar-date-info {
  font-size: 14px;
  color: #666;
  margin-bottom: var(--spacing-xs);
}

.calendar-date-en {
  font-size: 12px;
  color: #999;
  margin-bottom: var(--spacing-xl);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  max-width: 350px;
  margin: 0 auto var(--spacing-xl);
  padding: var(--spacing-md);
  background: #f8f8f8;
  border-radius: 12px;
}

.calendar-day-header {
  font-size: 11px;
  font-weight: 600;
  color: #666;
  padding: 8px 0;
  text-align: center;
}

.calendar-day-header.sunday {
  color: #ff6b6b;
}

.calendar-date {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #333;
  border-radius: 50%;
  transition: all 0.3s ease;
}

.calendar-date.empty {
  visibility: hidden;
}

.calendar-date.sunday {
  color: #ff6b6b;
}

.calendar-date.wedding-day {
  background: linear-gradient(135deg, #D7BE75 0%, #EADAA9 100%);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(215, 190, 117, 0.4);
  transform: scale(1.1);
}

.live-counter {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.counter-item {
  text-align: center;
}

.counter-value {
  font-size: 32px;
  font-weight: 700;
  color: #333;
  line-height: 1;
  margin-bottom: 8px;
}

.counter-label {
  font-size: 11px;
  font-weight: 400;
  color: #999;
  letter-spacing: 1px;
}

.calendar-message {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

@media (max-width: 480px) {
  .calendar-grid {
    gap: 2px;
    padding: var(--spacing-sm);
  }

  .calendar-date {
    font-size: 12px;
  }

  .counter-value {
    font-size: 28px;
  }

  .live-counter {
    gap: var(--spacing-sm);
  }
}