/* ============================================================
   侘寂风 (Wabi-Sabi) 设计系统 — 日本不动产公司官网
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;600;700&family=Noto+Serif+SC:wght@300;400;600;700&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300&display=swap');

:root {
  /* 侘寂色彩 */
  --bg:       #FBFAF7;
  --surface:  #F5F1EC;
  --surface2: #EDE7E0;
  --text:     #3D3226;
  --text-sub: #8B7355;
  --text-light:#B8A99A;
  --accent:   #A0522D;
  --accent2:  #C17F59;
  --border:   #E5DDD5;
  --gold:     #C4A265;
  --gold-light:#E8D5B0;
  --white:    #FFF;

  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;

  /* 字体 */
  --font-heading: 'Noto Serif JP', 'Noto Serif SC', 'Songti SC', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', sans-serif;
  --font-en: 'Cormorant Garamond', Georgia, serif;

  /* 其他 */
  --radius: 4px;
  --shadow: 0 2px 20px rgba(61,50,38,0.06);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;

  --lang: 'ja';
}

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

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

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent2); }
img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.02em;
}
h1 { font-size: 2.5rem; font-weight: 300; }
h2 { font-size: 1.8rem; font-weight: 300; }
h3 { font-size: 1.3rem; font-weight: 400; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-md); }

/* ============================================================
   Navigation
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(251,250,247,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-width); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem var(--space-md);
}
.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-logo-img {
  width: 36px; height: 36px; flex-shrink: 0;
  transition: var(--transition);
}
.nav-brand:hover .nav-logo-img { opacity: 0.8; }
.nav-logo-text {
  font-family: var(--font-heading);
  font-size: 1.1rem; font-weight: 600; color: var(--text);
  letter-spacing: 0.04em;
}
.footer-logo-img { width: 40px; height: 40px; opacity: 0.7; }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  font-size: 0.85rem; color: var(--text-sub); letter-spacing: 0.03em;
  position: relative; padding-bottom: 4px;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 1px;
  background: var(--accent); transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

/* Language Switcher */
.lang-switch {
  display: flex; gap: 4px; margin-left: 1.5rem;
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
.lang-switch button {
  border: none; background: transparent; padding: 4px 10px;
  font-size: 0.75rem; cursor: pointer; color: var(--text-light);
  font-family: var(--font-body); letter-spacing: 0.03em; transition: var(--transition);
}
.lang-switch button.active { background: var(--accent); color: var(--white); }
.lang-switch button:hover:not(.active) { color: var(--text); }

/* Mobile nav */
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.menu-toggle span { width: 22px; height: 1.5px; background: var(--text); transition: var(--transition); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  min-height: 90vh; display: flex; align-items: center;
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface2) 50%, var(--bg) 100%);
  position: relative; overflow: hidden;
  margin-top: 56px;
}
.hero::before {
  content: ''; position: absolute; top: -50%; right: -20%;
  width: 80%; height: 200%;
  background: radial-gradient(ellipse, var(--gold-light) 0%, transparent 70%);
  opacity: 0.15; pointer-events: none;
}
.hero-content {
  max-width: var(--max-width); margin: 0 auto; padding: var(--space-xl) var(--space-md);
  position: relative; z-index: 1;
}
.hero-tag {
  font-family: var(--font-en); font-size: 0.9rem; letter-spacing: 0.15em;
  color: var(--gold); margin-bottom: var(--space-sm); text-transform: uppercase;
}
.hero h1 {
  font-size: 3.2rem; font-weight: 300; max-width: 700px;
  margin-bottom: var(--space-sm); line-height: 1.3;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p {
  font-size: 1.1rem; color: var(--text-sub); max-width: 520px;
  margin-bottom: var(--space-md);
}
.hero .btn {
  display: inline-block; padding: 14px 36px; border: 1px solid var(--accent);
  color: var(--accent); font-size: 0.9rem; letter-spacing: 0.06em;
  border-radius: var(--radius); transition: var(--transition);
  font-family: var(--font-heading);
}
.hero .btn:hover { background: var(--accent); color: var(--white); }
.hero .btn-outline { border-color: var(--border); color: var(--text-sub); margin-left: 12px; }
.hero .btn-outline:hover { border-color: var(--text); color: var(--text); background: transparent; }

/* ============================================================
   Sections
   ============================================================ */
.section { padding: var(--space-xl) 0; }
.section-label {
  font-family: var(--font-en); font-size: 0.8rem; letter-spacing: 0.2em;
  color: var(--gold); text-transform: uppercase; margin-bottom: var(--space-xs);
}
.section h2 { margin-bottom: var(--space-md); }
.section h2 .light { color: var(--text-light); font-weight: 300; }
.section-intro { color: var(--text-sub); max-width: 600px; margin-bottom: var(--space-lg); }

/* ============================================================
   Cards
   ============================================================ */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
.card {
  background: var(--surface); padding: var(--space-md);
  border-radius: var(--radius); transition: var(--transition);
  border: 1px solid transparent;
}
.card:hover { border-color: var(--border); box-shadow: var(--shadow); }
.card-icon {
  width: 48px; height: 48px; display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: var(--space-sm);
  color: var(--accent); background: var(--white); border-radius: 50%;
}
.card h3 { margin-bottom: var(--space-xs); }
.card p { color: var(--text-sub); font-size: 0.95rem; line-height: 1.7; }

/* ============================================================
   About excerpt
   ============================================================ */
.about-excerpt {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); align-items: center;
}
.about-excerpt .text h2 { margin-bottom: var(--space-sm); }
.about-excerpt .text p { color: var(--text-sub); margin-bottom: var(--space-sm); }
.about-excerpt .image {
  aspect-ratio: 4/3; background: var(--surface2);
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius); color: var(--text-light);
  font-family: var(--font-heading); font-size: 0.9rem;
}

/* ============================================================
   Stats
   ============================================================ */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md); text-align: center; }
.stat-number { font-family: var(--font-en); font-size: 2.5rem; color: var(--accent); font-weight: 300; }
.stat-label { color: var(--text-sub); font-size: 0.85rem; margin-top: 4px; }

/* ============================================================
   Page header
   ============================================================ */
.page-header {
  background: var(--surface); padding: var(--space-xl) 0 var(--space-lg);
  margin-top: 56px; text-align: center;
}
.page-header h1 { font-weight: 300; }
.page-header p { color: var(--text-sub); margin-top: var(--space-xs); }

/* ============================================================
   Service page
   ============================================================ */
.service-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg);
  padding: var(--space-lg) 0; border-bottom: 1px solid var(--border);
  align-items: center;
}
.service-block:last-child { border-bottom: none; }
.service-block:nth-child(even) .service-text { order: -1; }
.service-text h3 { margin-bottom: var(--space-sm); font-weight: 400; }
.service-text p { color: var(--text-sub); margin-bottom: var(--space-xs); font-size: 0.95rem; }
.service-text .steps {
  list-style: none; margin-top: var(--space-sm);
}
.service-text .steps li {
  padding: 6px 0; font-size: 0.9rem; color: var(--text-sub);
  border-bottom: 1px dotted var(--border);
  display: flex; align-items: center; gap: 8px;
}
.service-text .steps li::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); flex-shrink: 0;
}
.service-image {
  aspect-ratio: 4/3; background: var(--surface2); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center; color: var(--text-light);
  font-family: var(--font-heading); font-size: 0.85rem;
}

/* ============================================================
   Properties page
   ============================================================ */
.property-filters {
  display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: var(--space-md);
}
.property-filters select {
  padding: 8px 16px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--white); font-family: var(--font-body); font-size: 0.85rem;
  color: var(--text); outline: none; cursor: pointer;
}
.property-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
.property-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: var(--transition);
}
.property-card:hover { box-shadow: var(--shadow); }
.property-card .thumb {
  aspect-ratio: 3/2; background: var(--surface2);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 0.8rem;
}
.property-card .info { padding: var(--space-sm); }
.property-card .price {
  font-family: var(--font-en); font-size: 1.3rem; color: var(--accent); font-weight: 400;
}
.property-card .price small { font-size: 0.7rem; color: var(--text-light); }
.property-card .detail { font-size: 0.85rem; color: var(--text-sub); margin-top: 6px; display: flex; gap: 12px; }

/* ============================================================
   Contact page
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
.contact-form { display: flex; flex-direction: column; gap: var(--space-sm); }
.contact-form input, .contact-form textarea, .contact-form select {
  padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius);
  font-family: var(--font-body); font-size: 0.9rem; color: var(--text);
  background: var(--white); outline: none; transition: var(--transition);
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--accent); }
.contact-form textarea { min-height: 120px; resize: vertical; }
.contact-form button {
  padding: 12px 32px; background: var(--accent); color: var(--white);
  border: none; border-radius: var(--radius); font-size: 0.9rem; cursor: pointer;
  font-family: var(--font-heading); letter-spacing: 0.06em; transition: var(--transition);
}
.contact-form button:hover { background: var(--accent2); }
.contact-info { font-size: 0.95rem; color: var(--text-sub); }
.contact-info h3 { margin-bottom: var(--space-sm); font-weight: 400; }
.contact-info p { margin-bottom: 8px; }
.contact-info .label { font-size: 0.75rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.1em; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--text); color: var(--text-light); padding: var(--space-lg) 0;
  font-size: 0.85rem;
}
.footer-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-md); display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-md); }
.footer a { color: var(--text-light); }
.footer a:hover { color: var(--gold-light); }
.footer-brand { font-family: var(--font-heading); color: var(--gold); font-size: 1.1rem; margin-bottom: 8px; }

/* ============================================================
   Utility
   ============================================================ */
.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }

/* ============================================================
   Tablet (≤768px)
   ============================================================ */
@media (max-width: 768px) {
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.4rem; }
  .hero { min-height: 80vh; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .hero .btn-outline { margin-left: 0; margin-top: 8px; display: inline-block; }
  .hero-content { padding: var(--space-lg) var(--space-md); }

  /* 卡片/网格 → 2列（平板）*/
  .card-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .property-grid { grid-template-columns: 1fr 1fr; }
  .about-excerpt, .service-block, .contact-grid { grid-template-columns: 1fr; }
  .service-block:nth-child(even) .service-text { order: 1; }
  .about-excerpt .image, .service-image { min-height: 240px; }

  /* 房源筛选器堆叠 */
  .property-filters { flex-direction: column; }
  .property-filters select { width: 100%; }

  /* 公司信息表格可横向滚动 */
  .about-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .about-table-wrap table { min-width: 480px; }

  /* 导航 */
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg); flex-direction: column; padding: var(--space-md); border-bottom: 1px solid var(--border); gap: 1rem; z-index: 99; }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1rem; padding: 8px 0; }
  .menu-toggle { display: flex; }
  .lang-switch { margin-left: 0; margin-top: 8px; align-self: flex-start; }
  .lang-switch button { padding: 6px 14px; font-size: 0.85rem; }

  .footer-inner { flex-direction: column; gap: var(--space-md); }
}

/* ============================================================
   Phone (≤480px)
   ============================================================ */
@media (max-width: 480px) {
  :root { --space-xl: 3rem; --space-lg: 2rem; --space-md: 1.2rem; }
  .container { padding: 0 1rem; }
  .hero { min-height: 70vh; margin-top: 52px; }
  .hero h1 { font-size: 1.6rem; }
  .hero .btn { padding: 12px 24px; font-size: 0.85rem; width: 100%; text-align: center; }
  .hero .btn-outline { margin-top: 8px; }
  .section { padding: var(--space-lg) 0; }

  /* 卡片 → 单列 */
  .card-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: var(--space-sm); }
  .property-grid { grid-template-columns: 1fr; }
  .stat-number { font-size: 1.8rem; }

  /* 表单全宽 */
  .contact-form input, .contact-form textarea, .contact-form select { font-size: 16px; } /* 防iOS缩放 */
  .contact-form button { width: 100%; }
  .contact-info { margin-top: var(--space-md); }

  /* 导航 */
  .nav-inner { padding: 0.75rem 1rem; }
  .nav-logo-img { width: 30px; height: 30px; }
  .nav-logo-text { font-size: 0.95rem; }
  .footer-logo-img { width: 32px; height: 32px; }
}