/* 🌟 Sapporo Travel Support - Main Styles (2024) */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family-primary);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-relaxed);
  color: var(--text-dark);
  background-color: var(--clean-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === 🔗 Link Styles === */
a {
  font-family: var(--font-family-heading);
  color: var(--primary-blue);
  text-decoration: none;
  transition: var(--transition-normal);
}

a:hover {
  color: var(--accent-red);
  text-decoration: underline;
}

a:focus {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* === 📐 Layout Utilities === */
.container {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 var(--space-md);
  width: 100%;
}

.container-fluid {
  width: 100%;
  padding: 0 var(--space-md);
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* === 🎨 Section Spacing === */
.section {
  padding: var(--space-xl) 0;
}

.section-sm {
  padding: var(--space-lg) 0;
}

.section-lg {
  padding: var(--space-xxl) 0;
}

.section-hero {
  padding-top: calc(80px + var(--space-md)); /* Header height + spacing */
  min-height: 100vh;
}

/* === 📝 Typography System === */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-sm);
  color: var(--text-dark);
}

h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: var(--font-weight-black);
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

h5 {
  font-size: clamp(1.125rem, 2vw, 1.25rem);
}

h6 {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
}

p {
  margin-bottom: var(--space-sm);
  line-height: var(--line-height-relaxed);
}

.text-large {
  font-size: clamp(1.125rem, 2vw, 1.25rem);
  line-height: var(--line-height-relaxed);
}

.text-small {
  font-size: 0.875rem;
  line-height: var(--line-height-normal);
}

.text-muted {
  color: var(--text-muted);
}

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

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

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

.text-right {
  text-align: right;
}

/* === 🎯 Button System === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  border: 2px solid transparent;
  border-radius: var(--border-radius-md);
  font-family: var(--font-family-primary);
  font-size: 0.95rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  user-select: none;
  outline: none;
}

.btn:focus-visible {
  outline: 3px solid var(--accent-red);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background: #1e4080;
  border-color: #1e4080;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(44, 90, 160, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-blue);
  border-color: var(--primary-blue);
}

.btn-secondary:hover {
  background: var(--primary-blue);
  color: var(--clean-white);
}

.btn-accent {
  background: var(--accent-red);
  color: var(--clean-white);
  border-color: var(--accent-red);
}

.btn-accent:hover {
  background: #e55555;
  border-color: #e55555;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.btn-success {
  background: var(--success-green);
  color: var(--clean-white);
  border-color: var(--success-green);
}

.btn-success:hover {
  background: #218838;
  border-color: #218838;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--space-sm) var(--space-lg);
  font-size: 1.125rem;
}

.btn-xl {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.25rem;
}

.btn-block {
  width: 100%;
}

/* === 📦 Card System === */
.card {
  background: var(--clean-white);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 2px 8px var(--shadow-light);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px var(--shadow-medium);
}

.card-header {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-light);
  background: var(--soft-gray);
}

.card-body {
  padding: var(--space-md);
}

.card-footer {
  padding: var(--space-md);
  border-top: 1px solid var(--border-light);
  background: var(--soft-gray);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-image-lg {
  height: 250px;
}

.card-image-xl {
  height: 300px;
}

/* === 🎭 Badge System === */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border-radius: var(--border-radius-round);
  white-space: nowrap;
}

.badge-primary {
  background: var(--primary-blue);
  color: var(--clean-white);
}

.badge-success {
  background: var(--success-green);
  color: var(--clean-white);
}

.badge-warning {
  background: var(--warning-yellow);
  color: var(--text-dark);
}

.badge-accent {
  background: var(--accent-red);
  color: var(--clean-white);
}

.badge-light {
  background: var(--light-gray);
  color: var(--text-dark);
}

/* === 🎪 Grid System === */
.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-1 {
  grid-template-columns: 1fr;
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}
.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}
.grid-auto-sm {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}
.grid-auto-lg {
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.grid-gap-sm {
  gap: var(--space-sm);
}
.grid-gap-md {
  gap: var(--space-md);
}
.grid-gap-lg {
  gap: var(--space-lg);
}

/* === 🎯 Utility Classes === */
.d-flex {
  display: flex;
}
.d-grid {
  display: grid;
}
.d-block {
  display: block;
}
.d-inline {
  display: inline;
}
.d-inline-block {
  display: inline-block;
}
.d-none {
  display: none;
}

.flex-column {
  flex-direction: column;
}
.flex-row {
  flex-direction: row;
}
.flex-wrap {
  flex-wrap: wrap;
}
.flex-nowrap {
  flex-wrap: nowrap;
}

.justify-start {
  justify-content: flex-start;
}
.justify-center {
  justify-content: center;
}
.justify-end {
  justify-content: flex-end;
}
.justify-between {
  justify-content: space-between;
}
.justify-around {
  justify-content: space-around;
}

.align-start {
  align-items: flex-start;
}
.align-center {
  align-items: center;
}
.align-end {
  align-items: flex-end;
}
.align-stretch {
  align-items: stretch;
}

.gap-xs {
  gap: var(--space-xs);
}
.gap-sm {
  gap: var(--space-sm);
}
.gap-md {
  gap: var(--space-md);
}
.gap-lg {
  gap: var(--space-lg);
}
.gap-xl {
  gap: var(--space-xl);
}

/* Margin & Padding Utilities */
.m-0 {
  margin: 0;
}
.mt-0 {
  margin-top: 0;
}
.mr-0 {
  margin-right: 0;
}
.mb-0 {
  margin-bottom: 0;
}
.ml-0 {
  margin-left: 0;
}

.m-auto {
  margin: auto;
}
.mt-auto {
  margin-top: auto;
}
.mr-auto {
  margin-right: auto;
}
.mb-auto {
  margin-bottom: auto;
}
.ml-auto {
  margin-left: auto;
}

.p-0 {
  padding: 0;
}
.pt-0 {
  padding-top: 0;
}
.pr-0 {
  padding-right: 0;
}
.pb-0 {
  padding-bottom: 0;
}
.pl-0 {
  padding-left: 0;
}

/* === 📱 Responsive Utilities === */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-sm);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .d-mobile-none {
    display: none;
  }

  .d-mobile-block {
    display: block;
  }

  .text-mobile-center {
    text-align: center;
  }

  .section {
    padding: var(--space-lg) 0;
  }

  .section-lg {
    padding: var(--space-xl) 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-sm);
  }

  .btn {
    font-size: 0.875rem;
  }

  .btn-lg {
    padding: var(--space-sm) var(--space-md);
    font-size: 1rem;
  }
}

/* === ♿ Accessibility === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}

@media (prefers-contrast: high) {
  :root {
    --shadow-light: rgba(0, 0, 0, 0.3);
    --shadow-medium: rgba(0, 0, 0, 0.4);
    --shadow-dark: rgba(0, 0, 0, 0.5);
  }

  .card {
    border: 2px solid var(--text-dark);
  }

  .btn {
    border-width: 3px;
  }
}

/* Focus management for keyboard users */
.focus-visible {
  outline: 3px solid var(--accent-red);
  outline-offset: 2px;
}

/* Screen reader only content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* === 📸 Instagram誘導UI スタイル === */
.tour-gallery {
  animation: fadeInUp 0.8s ease-out;
}

.instagram-preview {
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  border-radius: 20px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
  margin: var(--space-lg) 0;
  animation: slideInUp 0.6s ease-out 0.2s both;
}

/* Animations (fadeInUp, slideInUp, shimmer) moved to style.css */

.instagram-preview::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: shimmer 3s linear infinite;
  pointer-events: none;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  max-width: 900px;
  margin: 0 auto 2rem;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  transition: transform 0.3s ease;
}

.preview-grid:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.preview-item {
  aspect-ratio: 1;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
  filter: brightness(1) saturate(1.1);
}

.preview-item:hover img {
  transform: scale(1.1);
  filter: brightness(1.1) saturate(1.2);
}

.instagram-overlay {
  background: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.instagram-overlay::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.3);
  transition: opacity 0.3s ease;
}

.instagram-overlay:hover::before {
  opacity: 0.1;
}

.overlay-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: inherit;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}

.overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: white;
  font-weight: var(--font-weight-semibold);
  z-index: 2;
  transition: transform 0.3s ease;
  text-align: center;
}

.instagram-overlay:hover .overlay-content {
  transform: scale(1.1);
}

.instagram-icon {
  font-size: 2rem;
  animation: pulse 2s infinite;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
  color: #E4405F; /* Instagram公式ピンク */
  filter: drop-shadow(0 0 8px rgba(228, 64, 95, 0.3));
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.instagram-icon svg {
  width: 2rem;
  height: 2rem;
  transition: all 0.3s ease;
}

.instagram-overlay:hover .instagram-icon svg {
  transform: scale(1.1);
  filter: drop-shadow(0 0 12px rgba(228, 64, 95, 0.5));
}

.more-text {
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* pulse animation moved to style.css */

.instagram-cta-text {
  text-align: center;
  position: relative;
  z-index: 1;
}

.instagram-cta-text h3 {
  color: var(--text-dark);
  margin-bottom: var(--space-sm);
  font-weight: var(--font-weight-bold);
}

.instagram-cta-text p {
  color: var(--text-light);
  margin-bottom: var(--space-md);
  font-size: 1rem;
  line-height: var(--line-height-relaxed);
}

.instagram-btn,
.cta-button.instagram-btn {
  background: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d) !important;
  border: none !important;
  color: white !important;
  padding: 1rem 2rem;
  border-radius: 50px !important;
  font-weight: var(--font-weight-semibold);
  font-size: 1.1rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.instagram-btn::before,
.cta-button.instagram-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}

.instagram-btn:hover::before,
.cta-button.instagram-btn:hover::before {
  left: 100%;
}

.instagram-btn:hover,
.cta-button.instagram-btn:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 8px 30px rgba(0,0,0,0.3) !important;
  color: white !important;
  background: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d) !important;
}

.instagram-btn:focus,
.cta-button.instagram-btn:focus {
  outline: 3px solid rgba(255,255,255,0.5);
  outline-offset: 2px;
}

/* === 📱 Instagram UI レスポンシブ対応 === */

/* Tablet: 3 columns (768px-1023px) */
@media (max-width: 1023px) {
  .preview-grid {
    grid-template-columns: repeat(3, 1fr);
    max-width: 700px;
  }
}

/* Mobile: 2 columns (below 768px) */
@media (max-width: 768px) {
  .instagram-preview {
    padding: 1.5rem;
    margin: var(--space-md) 0;
  }

  .preview-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 500px;
    gap: 6px;
  }

  .instagram-btn,
  .cta-button.instagram-btn {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }

  .instagram-icon {
    font-size: 1.75rem;
  }

  .instagram-icon svg {
    width: 1.75rem;
    height: 1.75rem;
  }

  .instagram-cta-text h3 {
    font-size: 1.25rem;
  }

  .instagram-cta-text p {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .instagram-preview {
    padding: 1rem;
    border-radius: 16px;
  }

  .preview-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 350px;
    gap: 4px;
  }

  .instagram-btn,
  .cta-button.instagram-btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.95rem;
    border-radius: 40px;
  }

  .instagram-icon {
    font-size: 1.5rem;
  }

  .instagram-icon svg {
    width: 1.5rem;
    height: 1.5rem;
  }

  .more-text {
    font-size: 0.75rem;
  }
}

/* === ♿ アクセシビリティ対応 === */
@media (prefers-reduced-motion: reduce) {
  .tour-gallery,
  .instagram-preview,
  .instagram-preview::before,
  .instagram-icon,
  .preview-item img,
  .overlay-content,
  .instagram-btn,
  .cta-button.instagram-btn {
    animation: none !important;
    transition: none !important;
  }

  .preview-grid:hover,
  .preview-item:hover img,
  .instagram-overlay:hover .overlay-content,
  .instagram-btn:hover,
  .cta-button.instagram-btn:hover {
    transform: none !important;
  }
}

/* === 🖨️ Print Styles === */
@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }

  .btn,
  nav,
  .card:hover {
    transform: none !important;
  }

  .d-print-none {
    display: none !important;
  }

  .instagram-preview {
    display: none !important;
  }
}