/* ===================================
   나은 & 다은 100일 잔치 초대장
   Design System & Styles
   =================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+KR:wght@300;400;500;600;700&family=Noto+Sans+KR:wght@300;400;500;700&display=swap');

/* --- Design Tokens --- */
:root {
  --color-primary: #E8A0BF;
  --color-primary-light: #F5D0E0;
  --color-secondary: #BA90C6;
  --color-secondary-light: #D4BFE0;
  --color-accent: #C0DBEA;
  --color-accent-light: #E0EEF5;
  --color-warm: #EFC3CA;
  --color-warm-light: #FBEAED;
  --color-bg: #FFFBF0;
  --color-bg-alt: #FFF5E6;
  --color-text: #5D4037;
  --color-text-light: #8D6E63;
  --color-text-muted: #BCAAA4;
  --color-white: #FFFFFF;
  --color-gold: #D4A574;
  --color-gold-light: #F0DCC8;

  --font-serif: 'Noto Serif KR', Georgia, serif;
  --font-sans: 'Noto Sans KR', -apple-system, sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 50%;

  --shadow-soft: 0 4px 20px rgba(93, 64, 55, 0.06);
  --shadow-card: 0 8px 32px rgba(93, 64, 55, 0.08);
  --shadow-elevated: 0 16px 48px rgba(93, 64, 55, 0.12);

  --transition-base: 0.3s ease;
  --transition-slow: 0.6s ease;
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  overflow-x: hidden;
  max-width: 100vw;
}

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

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary);
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

/* --- Scroll Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }
.reveal-delay-4 { transition-delay: 0.6s; }

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* --- Section Divider --- */
.divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) auto;
  max-width: 200px;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary-light), transparent);
}

.divider-icon {
  font-size: 1rem;
  color: var(--color-primary);
  opacity: 0.7;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(180deg, #FFF0F5 0%, #FFFBF0 40%, #F5F0FF 70%, #FFFBF0 100%);
  overflow: hidden;
  padding: var(--spacing-xl) var(--spacing-md);
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  padding: 0.4rem 1.2rem;
  border-radius: 50px;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
}

.hero-wreath {
  width: 280px;
  height: 280px;
  margin: 0 auto var(--spacing-md);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-wreath img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  position: absolute;
  top: 0;
  left: 0;
  animation: wreath-rotate 60s linear infinite;
}

@keyframes wreath-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-wreath img {
    animation: none;
  }
}

.hero-wreath-text {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.hero-wreath-text .day-label {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-text-light);
  letter-spacing: 0.1em;
}

.hero-wreath-text .day-number {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-wreath-text .day-suffix {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-text-light);
  letter-spacing: 0.2em;
}

.hero-names {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.hero-names .ampersand {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 300;
  margin: 0 0.3em;
  font-style: italic;
}

.hero-subtitle {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-weight: 300;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-lg);
}

.hero-date {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-text-light);
  letter-spacing: 0.15em;
  font-weight: 400;
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--color-primary-light);
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator span {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 1.5px solid var(--color-text-muted);
  border-bottom: 1.5px solid var(--color-text-muted);
  transform: rotate(45deg);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===================================
   GREETING SECTION
   =================================== */
.greeting {
  background: var(--color-bg);
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.greeting-text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 2.2;
  color: var(--color-text);
  font-weight: 300;
  word-break: keep-all;
}

.greeting-text em {
  font-style: normal;
  color: var(--color-primary);
  font-weight: 500;
}

.greeting-parents {
  margin-top: var(--spacing-lg);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.greeting-deco {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-sm);
}

.greeting-deco img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ===================================
   COUNTDOWN SECTION
   =================================== */
.countdown {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-warm-light) 50%, var(--color-bg) 100%);
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-text-light);
  letter-spacing: 0.15em;
  margin-bottom: var(--spacing-xs);
}

.section-subtitle {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
}

.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
  max-width: 360px;
  margin: 0 auto;
}

.countdown-item {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-xs);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-spring);
}

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

.countdown-number {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.countdown-label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

.countdown-done {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-primary);
  font-weight: 400;
  line-height: 1.8;
}

/* ===================================
   BABIES SECTION
   =================================== */
.babies {
  background: var(--color-bg);
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.babies-illustration {
  width: 220px;
  height: 220px;
  margin: 0 auto var(--spacing-lg);
  border-radius: var(--radius-full);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
  border: 4px solid var(--color-white);
}

.babies-illustration img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.babies-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.baby-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg) var(--spacing-sm);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-spring), box-shadow var(--transition-base);
}

.baby-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-elevated);
}

.baby-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.baby-card.naeun::before {
  background: linear-gradient(90deg, var(--color-primary), var(--color-warm));
}

.baby-card.daeun::before {
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
}

.baby-emoji {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.baby-name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.baby-card.naeun .baby-name {
  color: var(--color-primary);
}

.baby-card.daeun .baby-name {
  color: var(--color-secondary);
}

.baby-name-meaning {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.baby-info {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ===================================
   CALENDAR SECTION
   =================================== */
.calendar-section {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-accent-light) 50%, var(--color-bg) 100%);
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.calendar {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-card);
  max-width: 340px;
  margin: 0 auto;
}

.calendar-header {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-primary-light);
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  margin-bottom: var(--spacing-xs);
}

.calendar-weekday {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-align: center;
  padding: 0.4rem 0;
  font-weight: 500;
}

.calendar-weekday:first-child {
  color: #E57373;
}

.calendar-weekday:last-child {
  color: #64B5F6;
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.calendar-day {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-light);
  text-align: center;
  padding: 0.5rem 0;
  border-radius: var(--radius-full);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.calendar-day.sunday {
  color: #E57373;
}

.calendar-day.saturday {
  color: #64B5F6;
}

.calendar-day.birthday {
  background: linear-gradient(135deg, var(--color-secondary-light), var(--color-accent-light));
  color: var(--color-secondary);
  font-weight: 700;
  position: relative;
}

.calendar-day.birthday::after {
  content: '♥';
  position: absolute;
  top: -4px;
  right: -2px;
  font-size: 0.5rem;
  color: var(--color-primary);
}

.calendar-day.event-day {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
  font-weight: 700;
  position: relative;
  box-shadow: 0 2px 8px rgba(232, 160, 191, 0.4);
}

.calendar-day.event-day::after {
  content: '★';
  position: absolute;
  top: -6px;
  right: -4px;
  font-size: 0.6rem;
  color: var(--color-gold);
}

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

.calendar-legend {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-primary-light);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.7rem;
  color: var(--color-text-light);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
}

.legend-dot.birthday {
  background: linear-gradient(135deg, var(--color-secondary-light), var(--color-accent-light));
}

.legend-dot.event {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}

/* ===================================
   EVENT INFO SECTION
   =================================== */
.event-info {
  background: var(--color-bg);
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.event-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl) var(--spacing-lg);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.event-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
}

.event-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid rgba(232, 160, 191, 0.15);
}

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

.event-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.event-icon.date-icon {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-warm-light));
}

.event-icon.time-icon {
  background: linear-gradient(135deg, var(--color-secondary-light), var(--color-accent-light));
}

.event-icon.place-icon {
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-primary-light));
}

.event-detail {
  text-align: left;
}

.event-detail-label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.15rem;
}

.event-detail-value {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-text);
  font-weight: 500;
}

.event-detail-sub {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 0.1rem;
}

/* ===================================
   LOCATION SECTION
   =================================== */
.location {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-secondary-light) 30%, var(--color-secondary-light) 70%, var(--color-bg) 100%);
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.location-map-placeholder {
  width: 100%;
  height: 200px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  border: 2px dashed var(--color-primary-light);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.location-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.9rem 1.8rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(232, 160, 191, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(232, 160, 191, 0.45);
  color: var(--color-white);
}

.btn-outline {
  background: var(--color-white);
  color: var(--color-text);
  border: 1.5px solid var(--color-primary-light);
}

.btn-outline:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.copy-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-text);
  color: var(--color-white);
  padding: 0.8rem 1.5rem;
  border-radius: 50px;
  font-size: 0.85rem;
  z-index: 1000;
  opacity: 0;
  transition: all 0.4s ease;
  pointer-events: none;
}

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

/* ===================================
   FOOTER
   =================================== */
.footer {
  background: linear-gradient(180deg, var(--color-bg) 0%, #FFF0F5 100%);
  text-align: center;
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
}

.footer-emoji {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.footer-message {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-text-light);
  font-weight: 300;
  line-height: 2;
  margin-bottom: var(--spacing-lg);
}

.footer-contact {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.footer-copyright {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-lg);
  opacity: 0.6;
}

/* ===================================
   FLOATING PETALS (CSS-only)
   =================================== */
.floating-petals {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.petal {
  position: absolute;
  top: -20px;
  opacity: 0.3;
  animation: fall linear infinite;
}

.petal::before {
  content: '';
  display: block;
  width: 10px;
  height: 10px;
  background: var(--color-primary-light);
  border-radius: 50% 0 50% 50%;
  transform: rotate(45deg);
}

.petal:nth-child(1) { left: 10%; animation-duration: 12s; animation-delay: 0s; }
.petal:nth-child(2) { left: 25%; animation-duration: 15s; animation-delay: 2s; }
.petal:nth-child(3) { left: 40%; animation-duration: 11s; animation-delay: 4s; }
.petal:nth-child(4) { left: 55%; animation-duration: 14s; animation-delay: 1s; }
.petal:nth-child(5) { left: 70%; animation-duration: 13s; animation-delay: 3s; }
.petal:nth-child(6) { left: 85%; animation-duration: 16s; animation-delay: 5s; }
.petal:nth-child(7) { left: 15%; animation-duration: 10s; animation-delay: 6s; }
.petal:nth-child(8) { left: 50%; animation-duration: 17s; animation-delay: 7s; }

.petal:nth-child(even)::before {
  background: var(--color-secondary-light);
  width: 8px;
  height: 8px;
}

.petal:nth-child(3n)::before {
  background: var(--color-accent-light);
  width: 6px;
  height: 6px;
}

@keyframes fall {
  0% {
    transform: translateY(-20px) rotate(0deg) translateX(0);
    opacity: 0;
  }
  10% {
    opacity: 0.3;
  }
  90% {
    opacity: 0.3;
  }
  100% {
    transform: translateY(100vh) rotate(720deg) translateX(50px);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .petal {
    animation: none;
    display: none;
  }
  .scroll-indicator {
    animation: none;
  }
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (min-width: 768px) {
  .container {
    max-width: 560px;
  }

  .hero-wreath {
    width: 320px;
    height: 320px;
  }

  .hero-names {
    font-size: 2.4rem;
  }

  .hero-wreath-text .day-number {
    font-size: 3.5rem;
  }

  .babies-illustration {
    width: 260px;
    height: 260px;
  }

  .location-buttons {
    flex-direction: row;
    justify-content: center;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 640px;
  }
}