/* ===== CSS Variables - Brown Luxury Theme ===== */
:root {
  --brown-900: #1a0f0a;
  --brown-800: #2d1a0e;
  --brown-700: #4a2c1a;
  --brown-600: #6b3f25;
  --brown-500: #8b5230;
  --brown-400: #a8693f;
  --brown-300: #c4855a;
  --brown-200: #d4a574;
  --brown-100: #e8c9a0;
  --brown-50:  #f5e8d0;
  --gold:      #c9a84c;
  --gold-light:#e8c96a;
  --cream:     #faf4e8;
  --text-dark: #1a0f0a;
  --text-mid:  #4a2c1a;
  --text-light:#8b5230;
  --white:     #ffffff;
  --shadow-sm: 0 2px 8px rgba(26,15,10,0.12);
  --shadow-md: 0 8px 32px rgba(26,15,10,0.18);
  --shadow-lg: 0 20px 60px rgba(26,15,10,0.25);
  --radius:    6px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Noto Serif JP', 'Noto Serif SC', Georgia, serif;
  background: var(--cream);
  color: var(--text-dark);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===== Header & Nav ===== */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(26,15,10,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(201,168,76,0.3);
  transition: var(--transition);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem; height: 70px;
}
.logo {
  display: flex; align-items: center; gap: 0.75rem;
}
.logo-icon {
  /* width: 80px; height: 80px; background: var(--gold);
  border-radius: 10%; display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; */
}
.logo-text { color: var(--white); }
.logo-text strong { display: block; font-size: 1.1rem; letter-spacing: 0.05em; color: var(--gold-light); }
.logo-text span { font-size: 0.7rem; opacity: 0.6; letter-spacing: 0.15em; text-transform: uppercase; }
nav ul { display: flex; gap: 2rem; }
nav a {
  color: rgba(255,255,255,0.8); font-size: 0.85rem;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.25rem 0; border-bottom: 1px solid transparent;
  transition: var(--transition);
}
nav a:hover, nav a.active { color: var(--gold-light); border-color: var(--gold); }
.lang-switch {
  display: flex; gap: 0.5rem; align-items: center;
}
.lang-btn {
  background: none; border: 1px solid rgba(201,168,76,0.4);
  color: rgba(255,255,255,0.6); padding: 0.25rem 0.6rem;
  border-radius: var(--radius); font-size: 0.75rem;
  cursor: pointer; transition: var(--transition); font-family: inherit;
}
.lang-btn.active, .lang-btn:hover {
  background: var(--gold); color: var(--brown-900); border-color: var(--gold);
}
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 5px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--white); transition: var(--transition); }

/* ===== Hero Section ===== */
.hero {
  min-height: 100vh; position: relative;
  display: flex; align-items: center;
  background: linear-gradient(135deg, var(--brown-900) 0%, var(--brown-800) 40%, var(--brown-700) 100%);
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; opacity: 0.08;
  background-image: repeating-linear-gradient(
    45deg, var(--gold) 0, var(--gold) 1px, transparent 0, transparent 50%
  );
  background-size: 30px 30px;
}
.hero-glow {
  position: absolute; top: 20%; right: 10%;
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,76,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content {
  position: relative; z-index: 1;
  max-width: 1200px; margin: 0 auto; padding: 8rem 2rem 4rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
}
.hero-tag {
  display: inline-block; background: rgba(201,168,76,0.15);
  border: 1px solid rgba(201,168,76,0.4);
  color: var(--gold-light); padding: 0.35rem 1rem;
  border-radius: 2px; font-size: 0.75rem; letter-spacing: 0.2em;
  text-transform: uppercase; margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2.2rem, 4vw, 3.5rem); color: var(--white);
  line-height: 1.25; margin-bottom: 0.5rem;
  font-weight: 700;
}
.hero h1 .accent { color: var(--gold-light); display: block; }
.hero-sub {
  color: rgba(255,255,255,0.55); font-size: 0.85rem;
  letter-spacing: 0.25em; margin-bottom: 1.5rem; text-transform: uppercase;
}
.hero p {
  color: rgba(255,255,255,0.7); font-size: 1.05rem;
  margin-bottom: 2.5rem; max-width: 440px; line-height: 1.8;
}
.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--brown-400));
  color: var(--brown-900); padding: 0.85rem 2rem;
  border-radius: var(--radius); font-weight: 700; font-size: 0.9rem;
  letter-spacing: 0.05em; border: none; cursor: pointer;
  transition: var(--transition); font-family: inherit;
  box-shadow: 0 4px 20px rgba(201,168,76,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(201,168,76,0.4); }
.btn-outline {
  background: transparent; color: var(--white);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 0.85rem 2rem; border-radius: var(--radius);
  font-size: 0.9rem; cursor: pointer; transition: var(--transition); font-family: inherit;
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold-light); }

/* ===== Hero Stats Card ===== */
.hero-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(201,168,76,0.2);
  border-radius: 12px; padding: 2.5rem;
  backdrop-filter: blur(10px);
}
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.stat-item { text-align: center; }
.stat-num {
  font-size: 2.2rem; font-weight: 700; color: var(--gold-light);
  line-height: 1; display: block;
}
.stat-label { color: rgba(255,255,255,0.5); font-size: 0.75rem; margin-top: 0.3rem; letter-spacing: 0.1em; }
.stat-divider {
  border: none; border-top: 1px solid rgba(201,168,76,0.15);
  margin: 1.5rem 0;
}
.hero-card-note { color: rgba(255,255,255,0.4); font-size: 0.8rem; text-align: center; }

/* ===== Section Base ===== */
section { padding: 6rem 2rem; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-tag {
  display: inline-block; color: var(--gold); font-size: 0.75rem;
  letter-spacing: 0.25em; text-transform: uppercase; margin-bottom: 1rem;
}
.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem); color: var(--brown-900);
  margin-bottom: 1rem; line-height: 1.3;
}
.section-header p { color: var(--text-light); max-width: 560px; margin: 0 auto; line-height: 1.8; }
.divider-gold {
  width: 60px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 1.5rem auto;
}

/* ===== Services Section ===== */
.services { background: var(--white); }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.service-card {
  padding: 2.5rem 2rem; border-radius: 8px;
  border: 1px solid rgba(74,44,26,0.08);
  transition: var(--transition); position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--brown-400));
  transform: scaleX(0); transition: var(--transition);
}
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 56px; height: 56px; background: var(--brown-50);
  border-radius: 8px; display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; margin-bottom: 1.5rem;
}
.service-card h3 { font-size: 1.15rem; margin-bottom: 0.75rem; color: var(--brown-800); }
.service-card p { color: var(--text-light); font-size: 0.9rem; line-height: 1.8; }

/* ===== Fleet Section ===== */
.fleet { background: var(--brown-50); }
.fleet-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.fleet-card {
  background: var(--white); border-radius: 10px;
  overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition);
}
.fleet-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.fleet-img {
  height: 180px; background: linear-gradient(135deg, var(--brown-700), var(--brown-900));
  display: flex; align-items: center; justify-content: center;
  font-size: 5rem; position: relative; overflow: hidden;
}
.fleet-img::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.3));
}
.fleet-info { padding: 1.5rem; }
.fleet-info h3 { font-size: 1.1rem; color: var(--brown-800); margin-bottom: 0.5rem; }
.fleet-info p { color: var(--text-light); font-size: 0.85rem; margin-bottom: 1rem; }
.fleet-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.fleet-tag {
  background: var(--brown-50); color: var(--brown-600);
  padding: 0.2rem 0.6rem; border-radius: 3px; font-size: 0.75rem;
  border: 1px solid rgba(74,44,26,0.1);
}

/* ===== Why Us ===== */
.why { background: var(--brown-900); }
.why .section-header h2 { color: var(--white); }
.why .section-header p { color: rgba(255,255,255,0.55); }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; margin-top: 3rem; }
.why-item { text-align: center; padding: 2rem 1rem; }
.why-num {
  font-size: 3rem; font-weight: 700; color: rgba(201,168,76,0.2);
  line-height: 1; margin-bottom: 1rem;
}
.why-icon { font-size: 2rem; margin-bottom: 1rem; }
.why-item h3 { color: var(--gold-light); font-size: 1rem; margin-bottom: 0.75rem; }
.why-item p { color: rgba(255,255,255,0.5); font-size: 0.85rem; line-height: 1.8; }

/* ===== Booking Form ===== */
.booking { background: var(--cream); }
.booking-wrap {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 4rem; align-items: start;
}
.booking-info h2 { font-size: 2rem; color: var(--brown-900); margin-bottom: 1rem; }
.booking-info p { color: var(--text-light); line-height: 1.8; margin-bottom: 2rem; }
.contact-items { display: flex; flex-direction: column; gap: 1.2rem; }
.contact-item { display: flex; gap: 1rem; align-items: flex-start; }
.contact-icon {
  width: 40px; height: 40px; background: var(--brown-100);
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 1rem;
}
.contact-item strong { display: block; color: var(--brown-800); font-size: 0.9rem; margin-bottom: 0.2rem; }
.contact-item span { color: var(--text-light); font-size: 0.85rem; }

/* ===== Form Styles ===== */
.form-card {
  background: var(--white); border-radius: 12px;
  padding: 2.5rem; box-shadow: var(--shadow-md);
  border: 1px solid rgba(74,44,26,0.08);
}
.form-title {
  font-size: 1.2rem; color: var(--brown-900);
  margin-bottom: 2rem; padding-bottom: 1rem;
  border-bottom: 1px solid var(--brown-50);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1rem; }
.form-group label { font-size: 0.8rem; color: var(--text-mid); font-weight: 600; letter-spacing: 0.05em; }
.form-group label span.req { color: var(--brown-400); }
.form-group input, .form-group select, .form-group textarea {
  padding: 0.75rem 1rem; border: 1.5px solid rgba(74,44,26,0.12);
  border-radius: var(--radius); font-family: inherit; font-size: 0.9rem;
  background: var(--cream); color: var(--text-dark);
  transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--gold); background: var(--white);
  box-shadow: 0 0 0 3px rgba(201,168,76,0.1);
}
.form-group textarea { resize: vertical; min-height: 90px; }
.btn-submit {
  width: 100%; padding: 1rem; border: none;
  background: linear-gradient(135deg, var(--brown-700), var(--brown-900));
  color: var(--white); font-size: 1rem; font-weight: 700;
  border-radius: var(--radius); cursor: pointer; font-family: inherit;
  letter-spacing: 0.08em; transition: var(--transition);
  box-shadow: 0 4px 20px rgba(26,15,10,0.2);
}
.btn-submit:hover { background: linear-gradient(135deg, var(--brown-600), var(--brown-800)); transform: translateY(-1px); }
.form-msg { margin-top: 1rem; padding: 0.75rem 1rem; border-radius: var(--radius); font-size: 0.85rem; display: none; }
.form-msg.success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; display: block; }
.form-msg.error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; display: block; }

/* ===== Footer ===== */
footer {
  background: var(--brown-900); color: rgba(255,255,255,0.5);
  padding: 4rem 2rem 2rem;
}
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-brand p { font-size: 0.85rem; line-height: 1.8; margin-top: 1rem; }
.footer-col h4 { color: var(--gold-light); font-size: 0.85rem; letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 1.2rem; }
.footer-col ul li { margin-bottom: 0.6rem; }
.footer-col a { font-size: 0.85rem; transition: var(--transition); }
.footer-col a:hover { color: var(--gold-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08); padding-top: 2rem;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.8rem;
}

/* ===== Fade-in animations ===== */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero-content, .booking-wrap { grid-template-columns: 1fr; }
  .services-grid, .fleet-grid { grid-template-columns: 1fr 1fr; }
  .why-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-card { display: none; }
}
@media (max-width: 640px) {
  nav ul { display: none; }
  .hamburger { display: flex; }
  .services-grid, .fleet-grid, .why-grid, .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  section { padding: 4rem 1.25rem; }
}