@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* --- Design Tokens --- */
:root {
  --color-primary: #3a86ff;         /* ロイヤルブルー (スマート・清潔・信頼) */
  --color-primary-dark: #1d4ed8;
  --color-primary-bg: #eff6ff;      /* 薄いブルー */
  
  --color-secondary: #06d6a0;       /* ミントグリーン (安心・新生活・新鮮) */
  --color-secondary-bg: #ecfdf5;
  
  --color-accent: #ffbe0b;          /* サンイエロー (ワクワク感・アクティブ) */
  --color-accent-hover: #e0a800;
  
  --color-bg: #f8f9fa;              /* クリーンなオフホワイト */
  --color-card-bg: #ffffff;
  --color-text: #212529;            /* ダークグレー */
  --color-text-muted: #6c757d;
  --color-border: #dee2e6;
  --color-danger: #ef4444;          /* 警告赤 */
  --color-danger-bg: #fef2f2;
  
  --font-sans: 'Montserrat', 'Noto Sans JP', sans-serif;
  
  --shadow-sm: 0 4px 6px -1px rgba(58, 134, 255, 0.05);
  --shadow-md: 0 10px 15px -3px rgba(58, 134, 255, 0.08), 0 4px 6px -2px rgba(58, 134, 255, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(58, 134, 255, 0.1), 0 10px 10px -5px rgba(58, 134, 255, 0.04);
  
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-xl: 50px;
  
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: light;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-weight: 700;
  color: var(--color-text);
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* --- Layout --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.max-width-md {
  max-width: 800px;
}

.section {
  padding: 100px 0;
}

.section-alt {
  background-color: #ffffff;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title .subtitle {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  background-color: var(--color-primary-bg);
  padding: 6px 16px;
  border-radius: var(--radius-xl);
  margin-bottom: 16px;
}

.section-title h2 {
  font-size: 2.2rem;
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
  width: 100%;
}

.section-title p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 700px;
  margin: 0 auto;
}

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

.text-left p {
  margin: 0 !important;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-xl);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(58, 134, 255, 0.25);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-text);
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 190, 11, 0.3);
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline-sm {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text-muted);
  padding: 8px 18px;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
}

.btn-outline-sm:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.9rem;
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1.1rem;
}

.btn-full {
  width: 100%;
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.header.scrolled {
  height: 70px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-icon {
  font-size: 1.6rem;
  margin-right: 8px;
  float: left;
}

.logo-sub {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  margin-top: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
  position: relative;
  padding: 8px 0;
}

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

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

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

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  width: 100%;
  height: 3px;
  background-color: var(--color-text);
  border-radius: 3px;
  transition: var(--transition);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.1);
  transition: opacity 1.5s ease, transform 6s ease;
}

.hero-slide.active {
  opacity: 1;
  transform: scale(1);
  z-index: 2;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(33, 37, 41, 0.8) 0%, rgba(58, 134, 255, 0.4) 100%);
  z-index: 3;
}

.hero-content {
  position: relative;
  z-index: 4;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
  color: #ffffff;
  margin-top: 80px;
}

.hero-badge {
  display: inline-block;
  background-color: var(--color-secondary);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 8px 20px;
  border-radius: var(--radius-xl);
  margin-bottom: 24px;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 15px rgba(6, 214, 160, 0.3);
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.3;
  color: #ffffff;
  margin-bottom: 24px;
}

.hero-title span {
  display: block;
  font-size: 1.25rem;
  font-weight: 400;
  margin-top: 16px;
  opacity: 0.9;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
}

.hero-cta .btn-outline {
  border-color: #ffffff;
  color: #ffffff;
}

.hero-cta .btn-outline:hover {
  background-color: #ffffff;
  color: var(--color-text);
}

.hero-scroll-guide {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #ffffff;
  opacity: 0.7;
}

.scroll-text {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  margin-bottom: 8px;
}

.scroll-line {
  width: 2px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 20px;
  background-color: #ffffff;
  animation: scrollDown 2s infinite ease-in-out;
}

@keyframes scrollDown {
  0% { transform: translateY(-20px); }
  50% { transform: translateY(40px); }
  100% { transform: translateY(-20px); }
}

/* --- Features Section --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.feature-card {
  background-color: var(--color-card-bg);
  padding: 40px 30px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-bg);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 24px;
  display: inline-block;
  line-height: 1;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 16px;
  color: var(--color-text);
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- AI Advisor Section --- */
.advisor-wrapper {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
  background-color: var(--color-card-bg);
  padding: 60px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.mirai-character-area {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-top: 40px;
}

.mirai-avatar {
  font-size: 3rem;
  background-color: var(--color-primary-bg);
  width: 80px;
  height: 80px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--color-primary);
}

.mirai-speech-bubble {
  background-color: var(--color-primary-bg);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
  flex: 1;
}

.mirai-speech-bubble::before {
  content: '';
  position: absolute;
  top: 25px;
  left: -12px;
  border-width: 6px 12px 6px 0;
  border-style: solid;
  border-color: transparent var(--color-primary) transparent transparent;
  display: block;
  width: 0;
}

.mirai-speech-bubble::after {
  content: '';
  position: absolute;
  top: 25px;
  left: -9px;
  border-width: 6px 9px 6px 0;
  border-style: solid;
  border-color: transparent var(--color-primary-bg) transparent transparent;
  display: block;
  width: 0;
}

.mirai-speech-bubble p {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.6;
}

.advisor-quiz-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 40px 30px;
  box-shadow: var(--shadow-sm);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.quiz-step {
  transition: var(--transition);
}

.quiz-progress {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.advisor-quiz-card h3 {
  font-size: 1.3rem;
  margin-bottom: 24px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.quiz-opt-btn {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
  font-weight: 600;
  color: var(--color-text);
  width: 100%;
}

.quiz-opt-btn:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-bg);
  transform: translateX(4px);
}

.opt-emoji {
  font-size: 1.4rem;
}

.quiz-result-area {
  animation: fadeIn 0.6s ease;
}

.quiz-result-area h3 {
  color: var(--color-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.result-details {
  font-size: 0.95rem;
  background-color: var(--color-card-bg);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-bottom: 24px;
  border-left: 4px solid var(--color-primary);
  line-height: 1.6;
}

.result-details strong {
  color: var(--color-primary-dark);
}

.result-details ul {
  margin-top: 10px;
  margin-left: 20px;
}

.result-actions {
  display: flex;
  gap: 12px;
}

.hidden {
  display: none !important;
}

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

/* --- Property Section --- */
.tabs-container {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.tab-btn {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  padding: 12px 24px;
  border-radius: var(--radius-xl);
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition);
}

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

.tab-btn.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(58, 134, 255, 0.2);
}

.property-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 30px;
}

.property-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.property-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-bg);
}

.property-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 10;
  padding: 6px 14px;
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.badge-discount { background-color: var(--color-primary); }
.badge-new { background-color: var(--color-secondary); }
.badge-recommend { background-color: #ff6b6b; }

.property-image-wrapper {
  height: 200px;
  background-color: #e9ecef;
  position: relative;
  overflow: hidden;
}

.property-placeholder-img {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.property-placeholder-img span {
  font-family: var(--font-sans);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.7;
}

.property-info {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.property-type {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.property-name {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

.property-access {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.property-price-box {
  background-color: var(--color-bg);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 20px;
}

.property-price-box .rent {
  font-family: var(--font-sans);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.property-price-box .rent span {
  font-size: 0.9rem;
  font-weight: 600;
}

.property-price-box .admin-fee {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.property-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  flex: 1;
}

.property-tags li {
  font-size: 0.75rem;
  background-color: var(--color-primary-bg);
  color: var(--color-primary-dark);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

/* --- Simulator Section --- */
.simulator-layout {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 50px;
  align-items: center;
}

.simulator-info .tip-box {
  background-color: var(--color-secondary-bg);
  border-left: 4px solid var(--color-secondary);
  border-radius: var(--radius-sm);
  padding: 24px;
  margin-top: 30px;
}

.simulator-info .tip-box h4 {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 8px;
}

.simulator-info .tip-box p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.simulator-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 20px;
  position: relative;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.form-group input, 
.form-group select, 
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  transition: var(--transition);
  color: var(--color-text);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(58, 134, 255, 0.15);
}

.result-breakdown {
  margin-top: 30px;
  border-top: 1px dashed var(--color-border);
  padding-top: 24px;
}

.result-breakdown h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--color-text);
}

.breakdown-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.breakdown-list li {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.breakdown-list li strong {
  color: var(--color-text);
}

.total-box {
  background-color: var(--color-primary-bg);
  border: 1px solid rgba(58, 134, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.total-box span {
  font-weight: 700;
  color: var(--color-primary-dark);
}

.total-box strong {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* --- Shop Info Section --- */
.info-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.status-badge-wrapper {
  margin-bottom: 24px;
}

.status-badge {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  font-weight: 700;
}

.status-open {
  background-color: var(--color-secondary-bg);
  color: #047857;
}

.status-closed {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
}

.status-out-of-hours {
  background-color: #fef3c7;
  color: #d97706;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table th, .info-table td {
  padding: 16px 8px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

.info-table th {
  font-weight: 600;
  color: var(--color-text-muted);
  width: 30%;
  vertical-align: top;
}

.info-table td {
  color: var(--color-text);
}

.info-map-container {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-md);
}

.interactive-map {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.map-caption {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 12px;
  text-align: center;
}

.map-marker-shop {
  cursor: pointer;
}

/* --- Booking Form Section --- */
.booking-container {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 50px;
  box-shadow: var(--shadow-md);
}

.form-fieldset {
  border: none;
  margin-bottom: 30px;
}

.form-legend {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  display: block;
}

.required {
  color: var(--color-danger);
  font-size: 0.8rem;
  margin-left: 4px;
  vertical-align: middle;
}

.style-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.style-option {
  position: relative;
  cursor: pointer;
}

.style-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.style-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background-color: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-align: center;
  height: 100%;
}

.style-emoji {
  font-size: 2rem;
  margin-bottom: 12px;
}

.style-box strong {
  display: block;
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: 4px;
}

.style-box span:not(.style-emoji) {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.style-option input[type="radio"]:checked + .style-box {
  border-color: var(--color-primary);
  background-color: var(--color-primary-bg);
}

.style-option input[type="radio"]:checked + .style-box strong {
  color: var(--color-primary-dark);
}

.form-group-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-checkbox {
  margin-top: 10px;
  margin-bottom: 30px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-size: 0.95rem;
}

.checkbox-label input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox-custom {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  background-color: var(--color-bg);
  position: relative;
  transition: var(--transition);
}

.checkbox-label input:checked + .checkbox-custom {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}

.checkbox-custom::after {
  content: '';
  position: absolute;
  display: none;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid #ffffff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-label input:checked + .checkbox-custom::after {
  display: block;
}

/* --- Validation with :user-invalid and :has() --- */

/* 入力欄でインタラクション後にエラーがあった場合 */
.form-group input:user-invalid,
.form-group select:user-invalid,
.form-group textarea:user-invalid {
  border-color: var(--color-danger);
  background-color: var(--color-danger-bg);
}

/* :user-invalid状態の場合、直下のエラーメッセージを表示 */
.form-group:has(:user-invalid) .error-msg {
  display: block;
}

/* 同意チェックボックスのエラー */
.form-checkbox:has(input:user-invalid) .checkbox-custom {
  border-color: var(--color-danger);
}
.form-checkbox:has(input:user-invalid) .error-msg {
  display: block;
}

.error-msg {
  display: none;
  font-size: 0.8rem;
  color: var(--color-danger);
  margin-top: 6px;
  font-weight: 500;
}

.form-summary-error {
  background-color: var(--color-danger-bg);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--color-danger);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 24px;
  animation: fadeIn 0.4s ease;
}

/* --- Dialog Modal --- */
.success-dialog {
  border: none;
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 500px;
  width: 90%;
  margin: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  animation: modalScale 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.success-dialog::backdrop {
  background-color: rgba(33, 37, 41, 0.6);
  backdrop-filter: blur(4px);
}

@keyframes modalScale {
  from { transform: scale(0.85); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

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

.success-icon {
  font-size: 4rem;
  margin-bottom: 20px;
  line-height: 1;
}

.success-dialog h2 {
  font-size: 1.6rem;
  color: var(--color-text);
  margin-bottom: 12px;
}

.success-dialog p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.dialog-details {
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 20px;
  text-align: left;
  border: 1px solid var(--color-border);
}

.dialog-details p {
  margin-bottom: 8px;
  font-size: 0.9rem;
}
.dialog-details p:last-child {
  margin-bottom: 0;
}

.dialog-details strong {
  color: var(--color-text);
}

.dialog-note {
  font-size: 0.8rem !important;
  color: var(--color-text-muted);
  margin-bottom: 24px !important;
}

/* --- Footer --- */
.footer {
  background-color: #212529;
  color: #ffffff;
  padding: 80px 0 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 60px;
}

.footer-brand .logo {
  color: #ffffff;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

.brand-desc {
  margin-top: 16px;
  line-height: 1.6;
}

.footer-links h4, .footer-contact h4 {
  font-size: 1.1rem;
  color: #ffffff;
  margin-bottom: 24px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.footer-links nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links nav a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

.footer-links nav a:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}

.footer-contact p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
}

.footer-bottom-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom .privacy a:hover {
  color: #ffffff;
}

/* --- Scroll Animations --- */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive Media Queries --- */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .advisor-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px;
  }
  .simulator-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .info-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .header {
    height: 70px;
  }
  .menu-toggle {
    display: flex;
  }
  .nav {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: #ffffff;
    flex-direction: column;
    padding: 50px 24px;
    gap: 24px;
    transition: var(--transition);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
  }
  .nav.active {
    left: 0;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-cta {
    flex-direction: column;
    gap: 12px;
  }
  .section {
    padding: 70px 0;
  }
  .section-title h2 {
    font-size: 1.8rem;
  }
  .style-selector {
    grid-template-columns: 1fr;
  }
  .form-group-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .booking-container {
    padding: 30px 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}