/* ========================================
   BOOBOOレンタカー - Main Stylesheet
   ======================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Sans+JP:wght@400;500;600;700;800&display=swap');
@import url('variables.css');

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul, ol {
  list-style: none;
}

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

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

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

.section--alt {
  background-color: var(--color-bg-alt);
}

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

.section__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.section__subtitle {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section__title-accent {
  color: var(--color-primary);
}

/* ─── Header ─── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: var(--z-header);
  transition: box-shadow var(--transition-base);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__logo img {
  height: 44px;
  width: auto;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.header__nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  position: relative;
  padding: var(--space-xs) 0;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

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

.header__nav-link:hover::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header__lang-switch {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.header__lang-switch a {
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.header__lang-switch a.active {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
}

.header__phone {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.header__phone svg {
  width: 16px;
  height: 16px;
}

/* Mobile menu toggle */
.header__menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.header__menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.header__menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.header__menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  font-family: var(--font-family-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  box-shadow: 0 4px 14px rgba(46, 154, 59, 0.3);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-text-on-primary);
  box-shadow: 0 6px 20px rgba(46, 154, 59, 0.4);
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-text-on-accent);
  box-shadow: 0 4px 14px rgba(255, 152, 0, 0.3);
}

.btn--accent:hover {
  background: var(--color-accent-dark);
  color: var(--color-text-on-accent);
  box-shadow: 0 6px 20px rgba(255, 152, 0, 0.4);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
}

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

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

.btn--lg {
  padding: 16px 40px;
  font-size: var(--font-size-base);
}

.btn--xl {
  padding: 20px 48px;
  font-size: var(--font-size-md);
}

.btn--block {
  width: 100%;
}

.btn svg {
  width: 18px;
  height: 18px;
}

/* ─── Hero Section ─── */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #1B7A28 100%);
  color: var(--color-text-on-primary);
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></svg>');
  background-size: 200px;
  animation: float 30s linear infinite;
}

@keyframes float {
  from { background-position: 0 0; }
  to { background-position: 200px 200px; }
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: var(--space-3xl);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
}

.hero__content {
  flex: 1;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
}

.hero__title span {
  color: var(--color-accent);
}

.hero__description {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  opacity: 0.9;
  margin-bottom: var(--space-xl);
  max-width: 520px;
}

.hero__cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero__highlights {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.hero__highlight {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.hero__highlight-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-lg);
}

.hero__image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image img {
  max-width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

/* ─── Features Grid ─── */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.features-safety {
  grid-template-columns: repeat(4, 1fr);
}

.use-cases-grid {
  grid-template-columns: repeat(3, 1fr);
}

.feature-card {
  padding: var(--space-xl);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  border: 1px solid var(--color-border-light);
}

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

.feature-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-xl);
}

.feature-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
}

.feature-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ─── Vehicle Cards ─── */
.vehicle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.vehicle-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  border: 1px solid var(--color-border-light);
}

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

.vehicle-card__image {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--color-bg-alt);
}

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

.vehicle-card:hover .vehicle-card__image img {
  transform: scale(1.05);
}

.vehicle-card__badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: 4px 12px;
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
}

.vehicle-card__body {
  padding: var(--space-lg);
}

.vehicle-card__class {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
}

.vehicle-card__name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
}

.vehicle-card__specs {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.vehicle-card__spec {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.vehicle-card__price {
  display: flex;
  align-items: baseline;
  gap: var(--space-xs);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-light);
}

.vehicle-card__price-amount {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-accent);
}

.vehicle-card__price-unit {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ─── Steps / How It Works ─── */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--color-border);
  z-index: 0;
}

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

.step__number {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  border-radius: 50%;
  margin: 0 auto var(--space-lg);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.step__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
}

.step__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ─── Insurance Table ─── */
.insurance-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.insurance-table th,
.insurance-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  border-bottom: 1px solid var(--color-border-light);
}

.insurance-table thead th {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
}

.insurance-table tbody tr:hover {
  background: var(--color-primary-pale);
}

.insurance-table .plan-recommended {
  background: var(--color-accent-light);
  position: relative;
}

.insurance-table .plan-recommended::before {
  content: 'おすすめ';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: var(--color-text-on-accent);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
}

/* ─── Pricing Table ─── */
.pricing-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  font-size: var(--font-size-sm);
}

.pricing-table th,
.pricing-table td {
  padding: var(--space-md);
  text-align: center;
  border-bottom: 1px solid var(--color-border-light);
  border-right: 1px solid var(--color-border-light);
}

.pricing-table th:last-child,
.pricing-table td:last-child {
  border-right: none;
}

.pricing-table thead th {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  font-weight: var(--font-weight-bold);
  white-space: nowrap;
}

.pricing-table tbody tr:nth-child(even) {
  background: var(--color-primary-pale);
}

.pricing-table tbody tr:hover {
  background: var(--color-primary-light);
}

.pricing-table .class-name {
  text-align: left;
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
}

.pricing-table .price {
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.pricing-table .price-highlight {
  color: var(--color-accent);
  font-weight: var(--font-weight-extrabold);
}

/* ─── FAQ Accordion ─── */
.faq-list {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  overflow: hidden;
  transition: border-color var(--transition-base);
}

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

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  background: none;
  border: none;
  width: 100%;
  cursor: pointer;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  text-align: left;
  gap: var(--space-md);
}

.faq-item__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq-item.active .faq-item__icon {
  transform: rotate(180deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-item.active .faq-item__answer {
  max-height: 500px;
}

.faq-item__answer-inner {
  padding: 0 var(--space-lg) var(--space-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ─── Footer ─── */
.footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-3xl) 0 var(--space-xl);
}

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

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

.footer__logo {
  height: 48px;
  margin-bottom: var(--space-md);
  filter: brightness(0) invert(1);
}

.footer__description {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-lg);
  opacity: 0.7;
}

.footer__contact {
  font-size: var(--font-size-sm);
}

.footer__contact a {
  color: var(--color-white);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

.footer__section-title {
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-white);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  opacity: 0.5;
}

/* ─── CTA Band ─── */
.cta-band {
  background: linear-gradient(135deg, var(--color-accent) 0%, #E68900 100%);
  color: var(--color-text-on-accent);
  padding: var(--space-3xl) 0;
  text-align: center;
}

.cta-band__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
}

.cta-band__text {
  font-size: var(--font-size-md);
  opacity: 0.9;
  margin-bottom: var(--space-xl);
}

.cta-band__buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── Scroll Animations ─── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ─── Utilities ─── */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-white { color: var(--color-white); }
.text-secondary { color: var(--color-text-secondary); }

.mt-0 { margin-top: 0; }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mb-0 { margin-bottom: 0; }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}