/* ===================================================================
   TomoTrip Landing Page v2 - Styles
   Mobile-first, conversion-optimized design
   =================================================================== */

/* CSS Variables & Design Tokens */
:root {
  /* Colors - #00A3C4 accent as specified */
  --color-primary: #00A3C4;
  --color-primary-dark: #008BA8;
  --color-primary-darker: #00738A;
  --color-primary-light: rgba(0, 163, 196, 0.1);
  
  --color-white: #FFFFFF;
  --color-black: #1A1A1A;
  --color-gray-50: #F8F9FA;
  --color-gray-100: #F1F3F5;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-600: #6B7280;
  --color-gray-700: #4B5563;
  --color-gray-900: #1A1A1A;
  
  --color-success: #10B981;
  --color-warning: #F59E0B;
  
  /* Typography */
  --font-primary: 'Noto Sans JP', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Meiryo', sans-serif;
  --font-accent: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;   /* 8px */
  --spacing-sm: 0.75rem;  /* 12px */
  --spacing-md: 1rem;     /* 16px */
  --spacing-lg: 1.5rem;   /* 24px */
  --spacing-xl: 2rem;     /* 32px */
  --spacing-2xl: 3rem;    /* 48px */
  --spacing-3xl: 4rem;    /* 64px */
  --spacing-4xl: 6rem;    /* 96px */
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Border Radius */
  --radius-sm: 0.375rem;  /* 6px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* Container */
  --container-max-width: 1280px;
  --container-narrow-max-width: 900px;
  --container-padding: 1rem;
}

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

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

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-gray-900);
  background-color: var(--color-white);
  overflow-x: hidden;
}

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-md) var(--spacing-lg);
  text-decoration: none;
  border-radius: 0 0 var(--radius-md) 0;
  z-index: 10000;
  transition: top var(--transition-base);
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Screen Reader Only */
.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;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.container--narrow {
  max-width: var(--container-narrow-max-width);
}

@media (min-width: 640px) {
  :root {
    --container-padding: 1.5rem;
  }
}

@media (min-width: 1024px) {
  :root {
    --container-padding: 2rem;
  }
}

/* Section Spacing */
.section {
  padding: var(--spacing-4xl) 0;
}

@media (max-width: 767px) {
  .section {
    padding: var(--spacing-3xl) 0;
  }
}

.section--light {
  background-color: var(--color-gray-50);
}

.section--accent {
  background-color: var(--color-primary-light);
}

.section__title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  color: var(--color-gray-900);
}

@media (min-width: 768px) {
  .section__title {
    font-size: 3rem;
  }
}

.mobile-break {
  display: inline;
}

@media (min-width: 768px) {
  .mobile-break {
    display: none;
  }
}

/* ===================================================================
   HERO SECTION
   =================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url('public/hero-beach-yacht.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(26, 26, 26, 0.2) 0%,
    rgba(26, 26, 26, 0.15) 50%,
    rgba(26, 26, 26, 0.25) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.hero__logo-link {
  position: absolute;
  top: var(--spacing-lg);
  left: var(--spacing-lg);
  z-index: 10;
  display: block;
  transition: transform 0.2s ease;
}

.hero__logo-link:hover {
  transform: scale(1.05);
}

.hero__logo {
  height: 3rem;
  width: auto;
  display: block;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

@media (min-width: 768px) {
  .hero__logo {
    height: 4rem;
  }
}

.hero__title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

@media (min-width: 768px) {
  .hero__title {
    font-size: 4rem;
  }
}

.hero__subtitle {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-white);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

@media (min-width: 768px) {
  .hero__subtitle {
    font-size: 1.5rem;
  }
}

.hero__cta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 640px) {
  .hero__cta {
    flex-direction: row;
    justify-content: center;
  }
}

.hero-line-note {
  margin-top: 12px;
  margin-bottom: var(--spacing-lg);
  font-size: 14px;
  line-height: 1.6;
  text-align: center;
  color: #ffffff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

@media (min-width: 768px) {
  .hero-line-note {
    font-size: 15px;
  }
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  align-items: center;
}

/* ===================================================================
   BUTTONS
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-primary);
  text-decoration: none;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  min-height: 44px; /* Accessibility: minimum tap target */
  -webkit-tap-highlight-color: transparent;
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn--primary:active {
  background-color: var(--color-primary-darker);
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  background-color: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--ghost:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--ghost:active {
  background-color: rgba(255, 255, 255, 0.15);
  transform: translateY(0);
}

.btn--large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
  min-height: 52px;
}

.btn--mobile-cta {
  width: 100%;
  min-height: 48px;
}

.btn--campaign {
  font-size: 1.25rem;
  padding: var(--spacing-xl) var(--spacing-3xl);
}

@media (max-width: 640px) {
  .btn {
    width: 100%;
  }
  
  .btn--campaign {
    font-size: 1.125rem;
    padding: var(--spacing-lg) var(--spacing-2xl);
  }
}

.btn__icon {
  flex-shrink: 0;
}

.btn__subtitle {
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.9;
  line-height: 1.2;
  margin-top: -0.25rem;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
  background-color: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  color: var(--color-white);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.badge__icon {
  flex-shrink: 0;
}

/* ===================================================================
   BENEFITS SECTION
   =================================================================== */
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

@media (min-width: 768px) {
  .benefits-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
  }
}

.benefit-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition-base);
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.benefit-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-full);
  color: var(--color-primary);
}

.benefit-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-900);
}

.benefit-card__description {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-gray-600);
}

/* ===================================================================
   HOW IT WORKS SECTION
   =================================================================== */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
  }
}

.step-card {
  position: relative;
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
}

.step-card__number {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 1.5rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
}

.step-card__image-container {
  width: 100%;
  max-width: 200px;
  margin: var(--spacing-xl) auto var(--spacing-lg);
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-card__image {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.step-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-900);
}

.step-card__description {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-gray-600);
}

/* ===================================================================
   AUDIENCE TABS SECTION
   =================================================================== */
.tabs {
  display: flex;
  gap: var(--spacing-xs);
  border-bottom: 2px solid var(--color-gray-200);
  margin-bottom: var(--spacing-2xl);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  flex-shrink: 0;
  min-width: 120px;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-primary);
  color: var(--color-gray-600);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  top: 2px;
  white-space: nowrap;
}

.tab:hover {
  color: var(--color-primary);
}

.tab:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.tab[aria-selected="true"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-panels {
  position: relative;
}

.tab-panel {
  animation: fadeIn var(--transition-slow);
}

.tab-panel[hidden] {
  display: none;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tab-panel__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .tab-panel__content {
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
  }
}

.tab-panel__title {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  color: var(--color-gray-900);
}

.tab-panel__text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-lg);
}

.tab-panel__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.tab-panel__features li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-gray-700);
}

.feature-icon {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-primary);
}

.tab-panel__faq {
  background-color: var(--color-gray-50);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
}

.tab-panel__faq-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-900);
}

/* FAQ Items */
.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:last-child {
  margin-bottom: 0;
}

.faq-item--main {
  background-color: var(--color-white);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  width: 100%;
  padding: var(--spacing-lg);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-gray-900);
  cursor: pointer;
  list-style: none;
  transition: all var(--transition-base);
  -webkit-tap-highlight-color: transparent;
}

.faq-item__question::-webkit-details-marker {
  display: none;
}

.faq-item__question:hover {
  color: var(--color-primary);
}

.faq-item__icon {
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--color-gray-600);
}

.faq-item[open] .faq-item__icon {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-item__answer {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-gray-700);
  animation: slideDown var(--transition-slow);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* ===================================================================
   COMPENSATION SECTION
   =================================================================== */
.compensation-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .compensation-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-3xl);
  }
}

.compensation-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.compensation-card__header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--color-gray-200);
}

.compensation-card__title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-gray-900);
}

.compensation-card__content {
  padding: var(--spacing-xl);
}

.price-highlight {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.price-highlight__amount {
  font-size: 3rem;
  font-weight: 700;
  font-family: var(--font-accent);
  color: var(--color-primary);
  line-height: 1;
}

.price-highlight__unit {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-gray-600);
}

.compensation-card__text {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-gray-700);
}

.safety-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.safety-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-gray-700);
}

/* ===================================================================
   CAMPAIGN SECTION
   =================================================================== */
.campaign-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.campaign-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-lg);
}

.campaign-badge__icon {
  flex-shrink: 0;
}

.campaign-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-gray-900);
}

@media (min-width: 768px) {
  .campaign-title {
    font-size: 3rem;
  }
}

.campaign-description {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-2xl);
}

.campaign-benefits {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 640px) {
  .campaign-benefits {
    grid-template-columns: repeat(2, 1fr);
  }
}

.campaign-benefit {
  background-color: var(--color-white);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

.campaign-benefit__icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.campaign-benefit__content {
  width: 100%;
}

.campaign-benefit__title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-xs);
}

.campaign-benefit__amount {
  font-size: 2.5rem;
  font-weight: 700;
  font-family: var(--font-accent);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

.campaign-benefit__amount--small {
  font-size: 2rem;
}

.campaign-benefit__subtitle {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
}

.campaign-benefit__detail {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-gray-700);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-gray-200);
  text-align: left;
}

.campaign-benefit__detail strong {
  color: var(--color-primary);
  font-weight: 700;
}

.campaign-benefit__note {
  font-size: 0.75rem;
  color: var(--color-gray-500);
  margin-left: var(--spacing-xs);
}

.campaign-benefit__highlight {
  display: inline-block;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  padding: 0.125rem var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-weight: 600;
  margin: var(--spacing-xs) 0;
}

.campaign-benefit__example {
  display: block;
  font-size: 1rem;
  color: var(--color-gray-800);
  margin-top: var(--spacing-sm);
  font-weight: 500;
}

.campaign-benefit__example strong {
  font-size: 1.25rem;
  color: var(--color-primary);
}

.campaign-benefit__rank {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  justify-content: center;
  font-size: 0.875rem;
  color: var(--color-gray-600);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-gray-200);
  font-weight: 500;
}

.campaign-benefit__rank svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.campaign-note {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-gray-600);
  margin-top: var(--spacing-lg);
}

/* ===================================================================
   FOOTER
   =================================================================== */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 640px) {
  .footer__content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer__content {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer__logo-img {
  height: 2rem;
  width: auto;
  display: block;
}

.footer__description {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-gray-300);
}

.footer__heading {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  color: var(--color-gray-300);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition-base);
  display: inline-block;
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-gray-300);
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.footer__social-link:hover {
  color: var(--color-white);
  background-color: var(--color-primary);
  transform: translateY(-2px);
}

.footer__bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer__copyright {
  font-size: 0.875rem;
  color: var(--color-gray-600);
}

/* ===================================================================
   MODAL (Video)
   =================================================================== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.modal.active {
  display: flex;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(4px);
  animation: fadeIn var(--transition-base);
}

.modal__content {
  position: relative;
  width: 100%;
  max-width: 900px;
  background-color: var(--color-gray-900);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  animation: slideUp var(--transition-slow);
  z-index: 1;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal__close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(26, 26, 26, 0.7);
  backdrop-filter: blur(10px);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  z-index: 2;
  transition: all var(--transition-base);
}

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

.modal__close:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  background-color: var(--color-black);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ===================================================================
   MOBILE CTA BAR
   =================================================================== */
.mobile-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-white);
  padding: var(--spacing-md) var(--spacing-md);
  box-shadow: var(--shadow-2xl);
  z-index: 1000;
  display: none;
  animation: slideUpCTA var(--transition-slow);
}

@keyframes slideUpCTA {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

@media (max-width: 767px) {
  .mobile-cta {
    display: block;
  }
  
  /* Add padding to body to prevent content from being hidden behind fixed CTA */
  body {
    padding-bottom: 80px;
  }
}

/* ===================================================================
   UTILITY CLASSES
   =================================================================== */
.text-center {
  text-align: center;
}

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

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

/* ===================================================================
   PRINT STYLES
   =================================================================== */
@media print {
  .hero,
  .mobile-cta,
  .modal,
  .skip-link,
  .btn,
  .footer__social {
    display: none !important;
  }
  
  .section {
    page-break-inside: avoid;
  }
}

/* ===================================================================
   ACCESSIBILITY - HIGH CONTRAST MODE
   =================================================================== */
@media (prefers-contrast: high) {
  :root {
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
  }
  
  .btn--primary {
    border: 3px solid var(--color-black);
  }
  
  .tab[aria-selected="true"] {
    border-bottom-width: 4px;
  }
}

/* ===================================================================
   REDUCED MOTION
   =================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===================================================================
   MODALS
   =================================================================== */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.modal.active {
  display: flex;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.3s ease;
}

.modal__content {
  position: relative;
  background-color: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.3s ease;
}

.modal__content--video {
  max-width: 90vw;
  max-height: 90vh;
  padding: 0;
  background-color: transparent;
  box-shadow: none;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-gray-200);
}

.modal__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-gray-900);
}

.modal__description {
  text-align: center;
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-xl);
  font-size: 1rem;
}

.modal__close {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-gray-100);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  color: var(--color-gray-700);
  transition: all var(--transition-base);
}

.modal__close:hover {
  background-color: var(--color-gray-200);
  color: var(--color-gray-900);
}

.modal__close--video {
  position: absolute;
  top: -48px;
  right: 0;
  background-color: rgba(255, 255, 255, 0.9);
  width: 48px;
  height: 48px;
  z-index: 10;
}

.modal__close--video:hover {
  background-color: var(--color-white);
}

.modal__options {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 640px) {
  .modal__options {
    grid-template-columns: repeat(3, 1fr);
  }
}

.option-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-xl);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  background-color: var(--color-white);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: all var(--transition-base);
  gap: var(--spacing-md);
}

.option-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 163, 196, 0.15);
}

.option-card:active {
  transform: translateY(-2px);
}

.option-card--guide .option-card__icon {
  color: var(--color-primary);
}

.option-card--tourist .option-card__icon {
  color: #10B981;
}

.option-card--sponsor .option-card__icon {
  color: #F59E0B;
}

.option-card__icon {
  flex-shrink: 0;
}

.option-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin: 0;
}

.option-card__description {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  margin: 0;
}

.option-card__features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  justify-content: center;
  margin-top: var(--spacing-sm);
}

.feature-tag {
  display: inline-block;
  padding: 0.25rem var(--spacing-sm);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.video-duration {
  display: inline-block;
  padding: 0.25rem var(--spacing-md);
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-top: var(--spacing-sm);
}

.fallback-helper {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-xl);
  background-color: var(--color-primary-light);
  border-radius: var(--radius-xl);
  border: 2px solid var(--color-primary);
}

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

.fallback-helper__message {
  color: var(--color-gray-900);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.fallback-helper__keyword-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-lg);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--color-primary);
}

.fallback-helper__keyword {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.fallback-helper__copy-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 40px;
}

.fallback-helper__copy-btn:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.fallback-helper__copy-btn:active {
  transform: translateY(0);
}

.fallback-helper__copy-btn svg {
  flex-shrink: 0;
}

.fallback-helper__note {
  font-size: 0.75rem;
  color: var(--color-gray-600);
  margin-top: var(--spacing-md);
}

.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  background-color: var(--color-black);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.video-container iframe,
.video-container video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================================================================
   SPONSOR SECTION (協賛店向け)
   =================================================================== */
.section--sponsor {
  padding: 80px 0;
  background: #f5fcff;
}

.sponsor-hero,
.sponsor-benefits__grid,
.sponsor-pricing__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
  justify-content: space-between;
}

.sponsor-hero__text {
  flex: 1 1 360px;
}

.sponsor-hero__image {
  flex: 1 1 320px;
  text-align: center;
}

.sponsor-hero__image img {
  max-width: 100%;
  height: auto;
  border-radius: 16px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: 16px;
}

.section-lead {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 16px;
  color: var(--color-gray-700);
}

.sponsor-hero__points {
  margin: 0 0 16px;
  padding-left: 1.2em;
  list-style: disc;
}

.sponsor-hero__points li {
  margin-bottom: 4px;
  color: var(--color-gray-700);
  line-height: 1.7;
}

.sponsor-hero__cta {
  margin-top: 12px;
}

.sponsor-hero__note,
.sponsor-pricing__note,
.section-text {
  font-size: 0.9rem;
  color: var(--color-gray-600);
  line-height: 1.7;
}

.sponsor-benefits {
  margin-top: 56px;
}

.sponsor-benefits__grid .sponsor-card,
.sponsor-pricing__grid .sponsor-card {
  flex: 1 1 260px;
  background: var(--color-white);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.sponsor-card h4 {
  margin-bottom: 8px;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-gray-900);
}

.sponsor-card p {
  color: var(--color-gray-700);
  line-height: 1.7;
}

.sponsor-pricing {
  margin-top: 56px;
}

.sponsor-pricing__grid ul {
  padding-left: 1.2em;
  list-style: disc;
}

.sponsor-pricing__grid ul li {
  margin-bottom: 4px;
  color: var(--color-gray-700);
}

.sponsor-relation,
.sponsor-flow,
.sponsor-cta {
  margin-top: 56px;
}

.sponsor-flow__list {
  padding-left: 1.2em;
}

.sponsor-flow__list li {
  margin-bottom: 8px;
  color: var(--color-gray-700);
  line-height: 1.7;
}

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

.sponsor-cta .btn {
  margin-top: 16px;
}

/* モバイル対応 */
@media (max-width: 768px) {
  .sponsor-hero,
  .sponsor-benefits__grid,
  .sponsor-pricing__grid {
    flex-direction: column;
  }

  .section--sponsor {
    padding: 48px 0;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .section-subtitle {
    font-size: 1.25rem;
  }
}

/* ===================================================================
   Hero LINE Card - White semi-transparent card design
   =================================================================== */
.hero-line-card {
  margin-top: 20px;
  background: rgba(255, 255, 255, 0.85);
  padding: 18px 24px;
  border-radius: 16px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
  text-align: center;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

.hero-line-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #333;
}

.hero-line-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #333;
}