/* ==========================================
   株式会社大地不動産 公式Webサイト
   メインスタイルシート
========================================== */

/* ==========================================
   CSS Variables
========================================== */
:root {
  --primary-color: #1e3a5f;
  --secondary-color: #2c5282;
  --accent-color: #d4a574;
  --accent-hover: #c08d5c;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-light: #999999;
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-dark: #1a1a1a;
  --border-color: #e0e0e0;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

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

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

body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

/* ==========================================
   Typography
========================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
}

/* ==========================================
   Container & Layout
========================================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.container-fluid {
  width: 100%;
  padding: 0 2rem;
}

.section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.section-title p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* ==========================================
   Header
========================================== */
.header {
  background-color: var(--bg-primary);
  box-shadow: var(--shadow-sm);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition);
}

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

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

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

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

.nav-menu {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-menu a {
  color: var(--text-primary);
  font-weight: 500;
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: var(--transition);
}

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

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--primary-color);
  transition: var(--transition);
}

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

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(30, 58, 95, 0.7), rgba(30, 58, 95, 0.7)),
              url('https://images.unsplash.com/photo-1560518883-ce09059eeffa?ixlib=rb-4.0.3&q=85&w=1920') center/cover;
  z-index: -1;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  padding: 2rem;
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
  line-height: 1.3;
}

.hero-subtitle {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  font-weight: 400;
  opacity: 0.95;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================
   Buttons
========================================== */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  font-size: 1rem;
}

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

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

.btn-outline {
  background-color: transparent;
  color: white;
  border-color: white;
}

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

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

.btn-secondary:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ==========================================
   Cards
========================================== */
.card {
  background-color: var(--bg-primary);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
}

.card-image {
  position: relative;
  width: 100%;
  height: 250px;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.card:hover .card-image img {
  transform: scale(1.1);
}

.card-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: var(--accent-color);
  color: white;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

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

.card-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ==========================================
   Grid System
========================================== */
.grid {
  display: grid;
  gap: 2rem;
}

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

/* ==========================================
   Features Section
========================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  text-align: center;
  padding: 2rem;
  background-color: var(--bg-primary);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background-color: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
}

.feature-title {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.feature-description {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================
   Stats Section
========================================== */
.stats-section {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  text-align: center;
}

.stat-item {
  padding: 2rem;
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--accent-color);
}

.stat-label {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* ==========================================
   CTA Section
========================================== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  text-align: center;
  padding: 5rem 2rem;
}

.cta-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cta-subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* ==========================================
   Footer
========================================== */
.footer {
  background-color: var(--bg-dark);
  color: white;
  padding: 3rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  margin-bottom: 1rem;
  color: var(--accent-color);
}

.footer-section p,
.footer-section li {
  margin-bottom: 0.5rem;
  opacity: 0.8;
}

.footer-section a:hover {
  color: var(--accent-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.7;
}

/* ==========================================
   Properties Page
========================================== */
.properties-header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 8rem 2rem 4rem;
  text-align: center;
}

.properties-filter {
  background-color: var(--bg-secondary);
  padding: 2rem;
  border-radius: 12px;
  margin-bottom: 3rem;
}

.filter-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.filter-item label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.filter-item select,
.filter-item input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  transition: var(--transition);
}

.filter-item select:focus,
.filter-item input:focus {
  outline: none;
  border-color: var(--accent-color);
}

.property-card {
  background-color: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.property-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
}

.property-image {
  position: relative;
  height: 280px;
  overflow: hidden;
}

.property-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.property-card:hover .property-image img {
  transform: scale(1.1);
}

.property-status {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background-color: var(--accent-color);
  color: white;
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.property-info {
  padding: 1.5rem;
}

.property-price {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.property-title {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.property-location {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.property-details {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin: 1rem 0;
}

.property-detail-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.property-detail-label {
  font-size: 0.85rem;
  color: var(--text-light);
}

.property-detail-value {
  font-weight: 600;
  color: var(--text-primary);
}

/* ==========================================
   Property Detail Page
========================================== */
.property-detail-header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 8rem 2rem 3rem;
}

.property-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.gallery-main {
  grid-column: 1 / -1;
  height: 500px;
  border-radius: 12px;
  overflow: hidden;
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-thumbnail {
  height: 200px;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.gallery-thumbnail:hover {
  transform: scale(1.05);
}

.gallery-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.property-overview {
  background-color: var(--bg-secondary);
  padding: 2rem;
  border-radius: 12px;
  margin-bottom: 3rem;
}

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

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

.overview-table th {
  background-color: var(--primary-color);
  color: white;
  font-weight: 600;
  width: 30%;
}

.overview-table td {
  background-color: white;
}

/* ==========================================
   Renovation Page
========================================== */
.renovation-hero {
  background: linear-gradient(rgba(30, 58, 95, 0.8), rgba(30, 58, 95, 0.8)),
              url('https://images.unsplash.com/photo-1581858726788-75bc0f6a952d?ixlib=rb-4.0.3&q=85&w=1920') center/cover;
  color: white;
  padding: 10rem 2rem 5rem;
  text-align: center;
}

.renovation-steps {
  background-color: var(--bg-secondary);
  padding: 5rem 2rem;
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.step-card {
  background-color: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: var(--transition);
}

.step-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.step-number {
  position: absolute;
  top: -1rem;
  left: 2rem;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
}

.step-title {
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.step-description {
  color: var(--text-secondary);
}

.before-after {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.before-after-item {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.before-after-image {
  height: 350px;
  position: relative;
}

.before-after-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.before-after-label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-weight: 600;
}

.before-after-description {
  padding: 1.5rem;
  background-color: white;
}

/* ==========================================
   Contact Form
========================================== */
.contact-form {
  max-width: 700px;
  margin: 3rem auto;
  background-color: var(--bg-secondary);
  padding: 3rem;
  border-radius: 12px;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.form-required {
  color: #e74c3c;
  margin-left: 0.25rem;
}

/* ==========================================
   Back to Top Button
========================================== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background-color: var(--accent-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--accent-hover);
  transform: translateY(-5px);
}

/* ==========================================
   Animations
========================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* ==========================================
   Responsive Design
========================================== */
@media (max-width: 1024px) {
  :root {
    font-size: 15px;
  }
  
  .container {
    padding: 0 1.5rem;
  }
  
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    font-size: 14px;
  }
  
  .header-container {
    padding: 1rem 1.5rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--bg-primary);
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
  }
  
  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .section {
    padding: 3rem 0;
  }
  
  .section-title h2 {
    font-size: 2rem;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .property-details {
    flex-direction: column;
    gap: 1rem;
  }
  
  .before-after {
    grid-template-columns: 1fr;
  }
  
  .contact-form {
    padding: 2rem 1.5rem;
  }
  
  .overview-table th {
    width: 40%;
  }
  
  .gallery-main {
    height: 300px;
  }
  
  .gallery-thumbnail {
    height: 150px;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
  
  .container {
    padding: 0 1rem;
  }
  
  .property-price {
    font-size: 1.5rem;
  }
  
  .stat-number {
    font-size: 2.5rem;
  }
}

/* ==========================================
   Utility Classes
========================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 3rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }