/* ==========================================================================
   모바일 청첩장 - 이수호 ♥ 김지수
   가을 웨딩 테마 스타일시트
   ========================================================================== */

/* CSS Variables - Color Palette */
:root {
  --color-primary: #D4A574;
  --color-secondary: #C67D4A;
  --color-accent: #A04030;
  --color-background: #FAF6F1;
  --color-text: #3D2B1F;
  --color-text-light: #6B5344;
  --color-white: #FFFFFF;
  --color-border: #E8DFD5;
  
  --font-serif: 'Noto Serif KR', serif;
  --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  --shadow-sm: 0 1px 3px rgba(61, 43, 31, 0.1);
  --shadow-md: 0 4px 12px rgba(61, 43, 31, 0.15);
  --shadow-lg: 0 8px 24px rgba(61, 43, 31, 0.2);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: clamp(14px, 4vw, 16px);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* Container */
.container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  background-color: var(--color-white);
  min-height: 100vh;
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   Cover Section
   ========================================================================== */
.cover {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.cover-image {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.cover-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

.cover-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 10vh;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    transparent 40%,
    rgba(61, 43, 31, 0.3) 70%,
    rgba(61, 43, 31, 0.6) 100%
  );
}

.cover-date {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--color-white);
  letter-spacing: 0.3em;
  margin-bottom: var(--spacing-sm);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.cover-names {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-white);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.cover-names .name {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0.1em;
}

.cover-names .ampersand {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 300;
  opacity: 0.9;
}

.cover-time {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--color-white);
  letter-spacing: 0.2em;
  margin-top: var(--spacing-xs);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
}

.scroll-indicator span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator span::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 2px;
  animation: scroll-bounce 1.5s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(10px); opacity: 0.5; }
}

/* ==========================================================================
   Section Common
   ========================================================================== */
.section {
  padding: var(--spacing-2xl) var(--spacing-md);
  background-color: var(--color-white);
}

.section-inner {
  max-width: 360px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.1em;
}

.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background-color: var(--color-primary);
  margin: var(--spacing-sm) auto 0;
}

/* Fade In Animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* ==========================================================================
   Greeting Section
   ========================================================================== */
.greeting {
  background-color: var(--color-background);
}

.greeting-message {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.greeting-message p {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 300;
  line-height: 2;
  color: var(--color-text);
}

.parents-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background-color: var(--color-white);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.parent-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  font-size: 0.95rem;
}

.parent-names {
  color: var(--color-text-light);
}

.relation {
  color: var(--color-text-light);
  font-size: 0.85rem;
}

.child-name {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--color-text);
}

/* ==========================================================================
   Calendar Section
   ========================================================================== */
.calendar-section {
  background-color: var(--color-white);
}

.wedding-datetime {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.datetime-main {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.datetime-time {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

/* Calendar Grid */
.calendar-grid {
  background-color: var(--color-background);
  border-radius: 12px;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.calendar-header {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: var(--spacing-sm);
}

.calendar-weekdays span {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-light);
  padding: var(--spacing-xs);
}

.calendar-weekdays .sun {
  color: var(--color-accent);
}

.calendar-weekdays .sat {
  color: var(--color-secondary);
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.calendar-days .day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--color-text);
  border-radius: 50%;
  transition: var(--transition-fast);
}

.calendar-days .day.sun {
  color: var(--color-accent);
}

.calendar-days .day.sat {
  color: var(--color-secondary);
}

.calendar-days .day.highlight {
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  box-shadow: var(--shadow-md);
}

.calendar-days .day.empty {
  visibility: hidden;
}

/* D-Day Counter */
.dday-counter {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.dday-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.dday-value {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-primary);
}

/* Calendar Buttons */
.calendar-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.calendar-buttons .btn {
  flex: 1;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  min-height: 48px;
  padding: 12px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover, .btn-primary:active {
  background-color: var(--color-secondary);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-outline:hover, .btn-outline:active {
  background-color: var(--color-background);
  border-color: var(--color-primary);
}

.btn-full {
  width: 100%;
}

.btn svg {
  flex-shrink: 0;
}

/* ==========================================================================
   Gallery Section
   ========================================================================== */
.gallery-section {
  background-color: var(--color-background);
}

.gallery-section .section-inner {
  max-width: 440px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
  aspect-ratio: 1;
}

.gallery-item.featured {
  grid-column: 1 / -1;
  aspect-ratio: 4 / 3;
}

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

.gallery-item:active img {
  transform: scale(1.03);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background-color: rgba(0, 0, 0, 0.95);
  align-items: center;
  justify-content: center;
}

.lightbox.active {
  display: flex;
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 10001;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 2rem;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.lightbox-content {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 16px;
  touch-action: pan-y pinch-zoom;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
  user-select: none;
  -webkit-user-drag: none;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10001;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.lightbox-prev {
  left: 12px;
}

.lightbox-next {
  right: 12px;
}

.lightbox-counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

/* Hide nav buttons on narrow screens, rely on swipe */
@media (max-width: 480px) {
  .lightbox-nav {
    display: none;
  }
}

/* ==========================================================================
   Location Section
   ========================================================================== */
.location-section {
  background-color: var(--color-background);
}

.venue-info {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.venue-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.venue-address {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.location-section .btn-primary {
  margin-bottom: var(--spacing-lg);
}

/* Shuttle Bus Info */
.shuttle-info {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: 12px;
  padding: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-white);
}

.shuttle-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.shuttle-header h4 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  margin: 0;
}

.shuttle-route {
  margin-bottom: var(--spacing-md);
}

.shuttle-route:last-of-type {
  margin-bottom: var(--spacing-sm);
}

.shuttle-route-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 500;
  margin: 0 0 var(--spacing-xs) 0;
  opacity: 0.9;
}

.shuttle-details {
  background-color: rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.shuttle-row {
  display: flex;
  gap: var(--spacing-sm);
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.shuttle-row:last-child {
  border-bottom: none;
}

.shuttle-label {
  flex-shrink: 0;
  width: 40px;
  font-size: 0.8rem;
  font-weight: 600;
  opacity: 0.9;
}

.shuttle-value {
  font-size: 0.9rem;
  line-height: 1.4;
}

.shuttle-note {
  font-size: 0.8rem;
  opacity: 0.8;
  text-align: center;
  margin: 0;
}

/* Transport Info */
.transport-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--color-white);
  border-radius: 12px;
}

.transport-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.transport-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-background);
  border-radius: 8px;
  color: var(--color-primary);
}

.transport-content h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.transport-content p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* ==========================================================================
   Account Section
   ========================================================================== */
.account-section {
  background-color: var(--color-white);
}

.account-desc {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

.account-group {
  margin-bottom: var(--spacing-md);
  background-color: var(--color-background);
  border-radius: 12px;
  overflow: hidden;
}

.accordion-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  background-color: transparent;
  transition: var(--transition-fast);
}

.accordion-toggle:hover {
  background-color: rgba(212, 165, 116, 0.1);
}

.accordion-arrow {
  transition: transform var(--transition-fast);
}

.accordion-toggle.active .accordion-arrow {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.accordion-content.open {
  max-height: 500px;
}

.account-item {
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-white);
}

.account-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.bank-icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  object-fit: contain;
}

.account-number {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.account-number span {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  word-break: break-all;
}

.copy-btn {
  flex-shrink: 0;
  padding: 8px 16px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-primary);
  background-color: transparent;
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  transition: var(--transition-fast);
}

.copy-btn:hover, .copy-btn:active {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Crypto Item */
.crypto-item .account-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
}

.crypto-chains {
  display: flex;
  gap: 6px;
}

.crypto-chains img {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  object-fit: cover;
}

.crypto-address span {
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
  font-size: 0.85rem;
}

.crypto-note {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 6px;
  margin-bottom: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  background-color: var(--color-background);
}

.footer-names {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-xs);
}

.footer-date {
  font-size: 0.85rem;
  color: var(--color-text-light);
  letter-spacing: 0.2em;
}

/* ==========================================================================
   Toast Notification
   ========================================================================== */
.toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 12px 24px;
  background-color: var(--color-text);
  color: var(--color-white);
  font-size: 0.9rem;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
  z-index: 1000;
}

.toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   Media Queries - Responsive
   ========================================================================== */

/* Tablet */
@media (min-width: 481px) {
  :root {
    --spacing-lg: 2.5rem;
    --spacing-xl: 3.5rem;
    --spacing-2xl: 5rem;
  }
  
  .section-inner {
    max-width: 400px;
  }
  
  .cover-names .name {
    font-size: 2.5rem;
  }
}

/* Desktop - Center the mobile layout */
@media (min-width: 769px) {
  html, body {
    height: 100%;
  }
  
  body {
    background-color: var(--color-background);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: var(--spacing-lg) 0;
    min-height: 100%;
  }
  
  .container {
    max-width: 480px;
    border-radius: 16px;
    overflow: hidden;
    min-height: 100vh;
    box-shadow: 0 4px 40px rgba(61, 43, 31, 0.15);
  }
  
  .cover {
    height: 80vh;
    max-height: 700px;
    min-height: 500px;
    border-radius: 16px 16px 0 0;
  }
}

/* Small phones */
@media (max-width: 359px) {
  html {
    font-size: 13px;
  }
  
  .cover-names .name {
    font-size: 1.75rem;
  }
  
  .calendar-days .day {
    font-size: 0.75rem;
  }
}


/* Landscape orientation */
@media (max-height: 500px) and (orientation: landscape) {
  .cover {
    height: auto;
    min-height: 100vh;
    padding: var(--spacing-xl) 0;
  }
  
  .scroll-indicator {
    display: none;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  .fade-in {
    transition: none;
    opacity: 1;
    transform: none;
  }
  
  .scroll-indicator span::after {
    animation: none;
  }
}