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

:root {
  --color-primary: #2c3e50;
  --color-secondary: #7f8c8d;
  --color-accent: #e8a87c;
  --color-background: #ffffff;
  --color-card: #fafafa;
  --color-border: #e8e8e8;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --border-radius: 12px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
}

/* ダークモード（システム設定） */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #e8e8e8;
    --color-secondary: #b0b0b0;
    --color-accent: #e8a87c;
    --color-background: #1a1a1a;
    --color-card: #2a2a2a;
    --color-border: #3a3a3a;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  }

  :root:not([data-theme="light"]) body::before {
    background: linear-gradient(
      180deg,
      rgba(255, 182, 193, 0.15) 0%,
      rgba(255, 218, 185, 0.12) 33%,
      rgba(173, 216, 230, 0.1) 66%,
      rgba(135, 206, 250, 0.08) 100%
    );
  }
}

/* ダークモード（手動切り替え） */
:root[data-theme="dark"] {
  --color-primary: #e8e8e8;
  --color-secondary: #b0b0b0;
  --color-accent: #e8a87c;
  --color-background: #1a1a1a;
  --color-card: #2a2a2a;
  --color-border: #3a3a3a;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
}

:root[data-theme="dark"] body::before {
  background: linear-gradient(
    180deg,
    rgba(255, 182, 193, 0.15) 0%,
    rgba(255, 218, 185, 0.12) 33%,
    rgba(173, 216, 230, 0.1) 66%,
    rgba(135, 206, 250, 0.08) 100%
  );
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: var(--color-primary);
  background: var(--color-background);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  position: relative;
  transition: background 0.5s ease;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    180deg,
    rgba(255, 182, 193, 0.1) 0%,
    rgba(255, 218, 185, 0.08) 33%,
    rgba(173, 216, 230, 0.06) 66%,
    rgba(135, 206, 250, 0.05) 100%
  );
  pointer-events: none;
  z-index: 0;
  opacity: var(--season-opacity, 0.5);
  transition: opacity 0.5s ease;
}

/* Container */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-sm);
  position: relative;
  z-index: 1;
}

/* Header */
.header {
  text-align: center;
  padding: var(--spacing-lg) 0;
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.theme-toggle {
  position: absolute;
  top: var(--spacing-md);
  right: 0;
  background: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.theme-toggle:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.theme-toggle-icon {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.theme-toggle:hover .theme-toggle-icon {
  transform: rotate(20deg);
}

.story-button {
  position: absolute;
  top: var(--spacing-md);
  left: 0;
  background: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.story-button:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.story-button-icon {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.story-button:hover .story-button-icon {
  transform: scale(1.1);
}

.title {
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  letter-spacing: 0.05em;
}

.subtitle {
  font-size: 1rem;
  color: var(--color-secondary);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
}

.date {
  font-size: 1.125rem;
  color: var(--color-accent);
  font-weight: 500;
}

/* Section */
section {
  margin-bottom: var(--spacing-xl);
}

/* Message Section */
.message {
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
}

.message-text {
  font-size: 1.125rem;
  color: var(--color-primary);
  line-height: 2;
  font-weight: 400;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-accent);
  letter-spacing: 0.05em;
}

/* Profile Section */
.profile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.profile-card {
  perspective: 1000px;
  height: 400px;
  cursor: pointer;
  position: relative;
}

.profile-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.profile-card.flipped .profile-card-inner {
  transform: rotateY(180deg);
}

.profile-card-front,
.profile-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  background: var(--color-card);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.profile-card-front {
  z-index: 2;
}

.profile-card-back {
  transform: rotateY(180deg);
  justify-content: center;
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.profile-card-back::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--border-radius);
  z-index: 0;
}

.profile-card-back.bride-back {
  background-image: url('/static/bride.png');
}

.profile-card-back.groom-back {
  background-image: url('/static/groom.png');
}

.profile-card:hover .profile-card-front,
.profile-card:hover .profile-card-back {
  box-shadow: var(--shadow-md);
}

.icon-placeholder {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--spacing-sm);
  border-radius: 50%;
  background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
  border: 3px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  overflow: hidden;
}

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

.profile-card-front h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: var(--spacing-sm);
  color: var(--color-primary);
}

.profile-card-back h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
  color: #ffffff;
}

.profile-detail {
  font-size: 0.95rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
  text-align: left;
  width: 100%;
}

.profile-card-back .profile-detail {
  position: relative;
  z-index: 1;
  color: #ffffff;
  text-align: center;
}

.flip-hint {
  position: absolute;
  bottom: var(--spacing-sm);
  font-size: 0.85rem;
  color: var(--color-accent);
  opacity: 0.7;
}

/* Timeline Section */
.timeline-items {
  position: relative;
  padding-left: var(--spacing-md);
}

.timeline-items::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--color-accent) 0%, #d4a574 100%);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  transition: opacity 0.3s ease;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-background);
  box-shadow: 0 0 0 2px var(--color-accent);
  transition: all 0.3s ease;
}

/* Timeline Progress States */
.timeline-item.completed {
  opacity: 0.6;
}

.timeline-item.completed::before {
  content: "✓";
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8px;
  color: var(--color-background);
  background: var(--color-secondary);
  box-shadow: 0 0 0 2px var(--color-secondary);
}

.timeline-item.completed .timeline-content {
  background: var(--color-card);
  opacity: 0.8;
}

.timeline-item.active::before {
  animation: pulse 2s ease-in-out infinite;
  box-shadow: 0 0 0 2px var(--color-accent), 0 0 12px var(--color-accent);
}

.timeline-item.active .timeline-content {
  background: linear-gradient(135deg, var(--color-card) 0%, #fff5ed 100%);
  box-shadow: var(--shadow-md);
  border: 2px solid var(--color-accent);
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.8;
  }
}

.timeline-time {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-accent);
  min-width: 60px;
  padding-top: 2px;
}

.timeline-content {
  flex: 1;
  background: var(--color-card);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
}

.timeline-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.timeline-content p {
  font-size: 0.95rem;
  color: var(--color-secondary);
  line-height: 1.6;
}

.icon-placeholder-small {
  display: inline-block;
  font-size: 1.25rem;
  margin-right: var(--spacing-xs);
  vertical-align: middle;
}

/* Venue Section */
.venue-info {
  background: var(--color-card);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
}

.venue-info h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.venue-address {
  font-size: 0.95rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}

.venue-detail {
  font-size: 0.95rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
}

.access-info {
  margin: var(--spacing-md) 0;
}

.access-info h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.access-info ul {
  list-style: none;
  padding: 0;
}

.access-info li {
  font-size: 0.95rem;
  color: var(--color-secondary);
  padding: var(--spacing-xs) 0;
  padding-left: 1.5rem;
  position: relative;
}

.access-info li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.map-container {
  margin-top: var(--spacing-md);
}

.map-container iframe {
  border-radius: var(--border-radius);
  width: 100%;
  display: block;
  box-shadow: var(--shadow-sm);
}

.map-container .venue-link {
  display: inline-block;
  margin-top: var(--spacing-sm);
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.map-container .venue-link:hover {
  color: #d4a574;
  text-decoration: underline;
}

/* Footer */
.footer {
  text-align: center;
  padding: var(--spacing-lg) 0;
  color: var(--color-secondary);
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-xl);
}

.footer p {
  font-size: 1rem;
}

/* Scroll Fade-in Animation */
.fade-in-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* Decorative Petal Animation */
.petal {
  position: fixed;
  width: 10px;
  height: 10px;
  background: var(--petal-color, var(--color-accent));
  border-radius: 50% 0 50% 0;
  opacity: 0.3;
  pointer-events: none;
  z-index: 1;
  animation: fall linear forwards;
  transition: background 0.5s ease;
}

@keyframes fall {
  0% {
    transform: translateY(0) rotate(0deg) translateX(0);
    opacity: 0.3;
  }
  50% {
    opacity: 0.5;
  }
  100% {
    transform: translateY(100vh) rotate(360deg) translateX(100px);
    opacity: 0;
  }
}

/* Story Modal */
.story-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: var(--spacing-md);
}

.story-modal.active {
  opacity: 1;
  visibility: visible;
}

.story-modal-content {
  background: var(--color-card);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transform: scale(0.8);
  transition: transform 0.3s ease;
}

.story-modal.active .story-modal-content {
  transform: scale(1);
}

.story-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: transparent;
  border: none;
  font-size: 2rem;
  color: var(--color-secondary);
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.2s ease;
  line-height: 1;
}

.story-close:hover {
  background: var(--color-border);
  color: var(--color-primary);
  transform: rotate(90deg);
}

.story-modal-title {
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-accent);
}

.story-timeline {
  position: relative;
  padding-left: var(--spacing-lg);
}

.story-timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent) 0%, #d4a574 100%);
}

.story-item {
  position: relative;
  margin-bottom: var(--spacing-lg);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.story-item.animate {
  opacity: 1;
  transform: translateY(0);
}

.story-item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-card);
  box-shadow: 0 0 0 2px var(--color-accent);
  z-index: 1;
}

.story-year {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.story-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.story-content p {
  font-size: 0.95rem;
  color: var(--color-secondary);
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 640px) {
  .title {
    font-size: 2rem;
  }

  .profile-grid {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .timeline-time {
    min-width: auto;
  }

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

  .theme-toggle {
    width: 40px;
    height: 40px;
    top: var(--spacing-sm);
  }

  .theme-toggle-icon {
    font-size: 1.25rem;
  }

  /* Reduce animation distance on mobile */
  .fade-in-section {
    transform: translateY(20px);
  }

  .story-button {
    width: 40px;
    height: 40px;
    top: var(--spacing-sm);
  }

  .story-button-icon {
    font-size: 1.25rem;
  }

  .story-modal-content {
    padding: var(--spacing-md);
    max-height: 90vh;
  }

  .story-modal-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
  }

  .story-timeline {
    padding-left: var(--spacing-md);
  }

  .story-year {
    font-size: 1.25rem;
  }

  .story-content h3 {
    font-size: 1.125rem;
  }

  .message {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .message-text {
    font-size: 1rem;
    line-height: 1.8;
  }
}