/* PetaMobile Site CSS */

:root {
  --color-background: #FFF9F2;
  --color-surface: #FFFFFF;
  --color-primary: #F46F68;
  --color-primary-dark: #D85A53;
  --color-primary-soft: #FFE2DC;
  --color-peach: #FFE8D8;
  --color-peach-light: #FFF2E8;
  --color-mint: #A9DCCB;
  --color-mint-soft: #EAF8F3;
  --color-yellow-soft: #FFF3C8;
  --color-lavender-soft: #F1ECFF;
  --color-text: #2E2A27;
  --color-muted: #8A7F78;
  --color-border: #EADFD7;

  --max-width: 1200px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --font-en: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-base);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-break: break-word;
  overflow-wrap: anywhere;
}

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

a {
  color: var(--color-primary-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-surface);
  padding: var(--space-sm) var(--space-md);
  z-index: 100;
  font-weight: 700;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  top: 0;
}

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

/* Header */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-text);
}

.brand:hover {
  color: var(--color-text);
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--color-muted);
  font-weight: 600;
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: var(--space-lg);
}

.desktop-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: var(--space-xs) 0;
}

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

.lang-switch {
  font-size: 0.8rem;
  font-weight: 700;
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-background);
}

/* Mobile nav */
.mobile-menu-btn {
  display: none;
}

.js .mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  cursor: pointer;
  color: var(--color-text);
}

.mobile-menu-btn[aria-expanded="true"] {
  background: var(--color-primary-soft);
}

.mobile-nav {
  display: block;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-lg);
}

.js .mobile-nav {
  display: none;
}

.js .mobile-nav.is-open {
  display: block;
}

.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-nav a {
  display: block;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav li:last-child a {
  border-bottom: none;
}

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--color-peach-light) 0%, var(--color-background) 100%);
  padding: var(--space-3xl) 0;
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-xl);
}

.hero-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 16px rgba(244, 111, 104, 0.15);
}

.hero-title {
  font-size: clamp(1.6rem, 5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.35;
  margin: 0;
}

.hero-subtitle {
  font-size: clamp(0.95rem, 2.5vw, 1.15rem);
  color: var(--color-muted);
  max-width: 520px;
  margin: 0;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-pill);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-surface);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-surface);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-peach-light);
  color: var(--color-text);
}

/* Sections */
.section {
  padding: var(--space-3xl) 0;
}

.section + .section {
  border-top: 1px solid var(--color-border);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title {
  font-size: clamp(1.3rem, 4vw, 1.8rem);
  font-weight: 800;
  margin: 0 0 var(--space-sm);
}

.section-desc {
  color: var(--color-muted);
  margin: 0;
  font-size: 0.95rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: 0 4px 20px rgba(46, 42, 39, 0.06);
}

.card-icon {
  width: 44px;
  height: 44px;
  color: var(--color-primary-dark);
  flex-shrink: 0;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
}

.card-text {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.6;
}

/* Flow */
.flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.flow-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.flow-badge {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.flow-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
}

.flow-desc {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* Photo guide */
.photo-guide-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.photo-guide-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.95rem;
}

.photo-guide-list .check {
  color: var(--color-primary);
  font-weight: 800;
  flex-shrink: 0;
}

.photo-guide-grid {
  max-width: 720px;
  margin-inline: auto;
}

/* Styles */
.style-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.style-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.style-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: var(--color-mint-soft);
}

.style-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.style-label {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
}

.style-desc {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
  line-height: 1.5;
}

/* Plans */
.plan-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.plan-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  position: relative;
}

.plan-card.is-recommended {
  border-color: var(--color-primary);
  border-width: 2px;
}

.plan-badge {
  position: absolute;
  top: -12px;
  right: var(--space-lg);
  background: var(--color-primary);
  color: var(--color-surface);
  font-size: 0.75rem;
  font-weight: 800;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-pill);
}

.plan-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 800;
  margin: 0;
}

.plan-usecase {
  font-size: 0.8rem;
  color: var(--color-primary-dark);
  font-weight: 700;
  margin: 0;
}

.plan-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.stat-box {
  background: var(--color-peach-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-muted);
  font-weight: 600;
  margin: 0 0 var(--space-xs);
}

.stat-value {
  font-size: 1.1rem;
  font-weight: 800;
  margin: 0;
}

.plan-price {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin: 0;
}

.plan-price-note {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin: 0;
}

.plan-note {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin: var(--space-md) 0 0;
  text-align: center;
}

/* FAQ */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.faq-item summary {
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

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

.faq-item summary::after {
  content: "+";
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item summary + * {
  color: var(--color-muted);
  margin: var(--space-sm) 0 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-q {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
}

.faq-a {
  color: var(--color-muted);
  margin: var(--space-sm) 0 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Contact */
.contact-section {
  text-align: center;
}

.contact-email {
  font-size: clamp(1rem, 3vw, 1.25rem);
  word-break: break-all;
}

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-brand-name {
  font-size: 1.1rem;
  font-weight: 800;
  margin: 0;
}

.footer-brand-sub {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.footer-links [aria-disabled="true"] {
  color: var(--color-muted);
  cursor: not-allowed;
}

.footer-links [aria-disabled="true"]:hover {
  text-decoration: none;
}

.footer-bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-muted);
  font-size: 0.8rem;
}

/* Root redirect page */
.redirect-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-lg);
}

.redirect-page .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
}

.redirect-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-xl);
}

.redirect-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0;
}

.redirect-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

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

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

  .flow-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .desktop-nav {
    display: flex;
  }

  .js .mobile-menu-btn {
    display: none;
  }

  .mobile-nav {
    display: none !important;
  }

  .style-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .plan-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .redirect-links {
    flex-direction: row;
  }
}

@media (min-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}