/* ========================================
   Sobani — 親孝行代行サービス LP
   Design: Warm, trustworthy, Japanese
   ======================================== */

:root {
  --color-primary: #D4764E;      /* warm terracotta */
  --color-primary-dark: #B85C38;
  --color-primary-light: #F5E6DC;
  --color-accent: #5B8C5A;       /* trustworthy green */
  --color-accent-light: #E8F0E8;
  --color-bg: #FBF8F5;           /* warm off-white */
  --color-bg-alt: #F3EDE6;
  --color-text: #3D3229;
  --color-text-light: #7A6E63;
  --color-white: #FFFFFF;
  --color-border: #E8DDD3;
  --shadow-sm: 0 2px 8px rgba(61,50,41,0.06);
  --shadow-md: 0 4px 20px rgba(61,50,41,0.10);
  --shadow-lg: 0 8px 32px rgba(61,50,41,0.14);
  --radius: 12px;
  --radius-lg: 20px;
  --font: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  font-size: 16px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(251,248,245,0.85);
  backdrop-filter: blur(12px);
  transition: box-shadow 0.3s;
}
.navbar.scrolled { box-shadow: var(--shadow-sm); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--color-text);
}
.logo-icon { font-size: 24px; }
.logo-text { font-size: 20px; font-weight: 700; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  color: var(--color-text-light);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--color-primary); }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  font-family: var(--font);
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-nav {
  padding: 8px 20px;
  font-size: 13px;
}
.btn-full { width: 100%; text-align: center; }

/* ---- Hero ---- */
.hero {
  padding: 120px 0 80px;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-primary-light) 100%);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-tagline {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.hero h1 {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 20px;
  color: var(--color-text);
}
.hero-desc {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 32px;
  line-height: 1.9;
}
.hero-cta { display: flex; gap: 16px; }

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-illustration {
  width: 320px;
  height: 320px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
}
.illust-house { position: relative; }
.illust-roof {
  width: 0;
  height: 0;
  border-left: 60px solid transparent;
  border-right: 60px solid transparent;
  border-bottom: 45px solid var(--color-primary);
  margin: 0 auto;
}
.illust-body {
  width: 100px;
  height: 70px;
  background: var(--color-primary-light);
  border: 3px solid var(--color-primary);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 6px;
  padding: 8px;
  position: relative;
}
.illust-window {
  background: var(--color-accent-light);
  border: 2px solid var(--color-accent);
  border-radius: 3px;
}
.illust-door {
  grid-column: 1 / -1;
  background: var(--color-primary-dark);
  border-radius: 3px 3px 0 0;
  height: 24px;
  align-self: end;
}
.illust-text {
  font-size: 14px;
  color: var(--color-text-light);
  text-align: center;
  line-height: 1.6;
}

/* ---- Section Common ---- */
.section-title {
  text-align: center;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}
.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  font-size: 15px;
  margin-bottom: 48px;
}

/* ---- Problems ---- */
.problems {
  padding: 80px 0;
  background: var(--color-white);
}
.problems .section-title { margin-bottom: 40px; }
.problem-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.problem-card {
  text-align: center;
  padding: 32px 16px;
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}
.problem-icon { font-size: 36px; display: block; margin-bottom: 16px; }
.problem-card p { font-size: 14px; color: var(--color-text-light); line-height: 1.7; }

/* ---- Service ---- */
.service {
  padding: 80px 0;
}
.service .section-title { margin-bottom: 8px; }
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 1px solid var(--color-border);
  transition: transform 0.2s, box-shadow 0.2s;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.service-icon { font-size: 32px; margin-bottom: 16px; }
.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
}
.service-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ---- Flow ---- */
.flow {
  padding: 80px 0;
  background: var(--color-white);
}
.flow .section-title { margin-bottom: 48px; }
.flow-steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}
.flow-step {
  text-align: center;
  flex: 0 0 180px;
}
.flow-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.flow-step h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.flow-step p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  padding: 0 8px;
}
.flow-connector {
  flex: 0 0 40px;
  height: 2px;
  background: var(--color-border);
  margin-top: 24px;
}

/* ---- Pricing ---- */
.pricing {
  padding: 80px 0;
}
.pricing .section-title { margin-bottom: 8px; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}
.pricing-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 2px solid var(--color-border);
  text-align: center;
  position: relative;
  transition: transform 0.2s;
}
.pricing-card:hover { transform: translateY(-4px); }
.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.04);
}
.pricing-card.featured:hover { transform: scale(1.06); }
.pricing-badge {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: var(--color-primary-light);
  color: var(--color-primary);
  margin-bottom: 16px;
}
.pricing-card.featured .pricing-badge {
  background: var(--color-primary);
  color: var(--color-white);
}
.pricing-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}
.pricing-price { margin-bottom: 24px; }
.price-amount {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-primary);
}
.price-unit {
  font-size: 14px;
  color: var(--color-text-light);
}
.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 28px;
}
.pricing-features li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--color-text-light);
  border-bottom: 1px solid var(--color-border);
}
.pricing-features li::before {
  content: '✓ ';
  color: var(--color-accent);
  font-weight: 700;
}

/* ---- Contact ---- */
.contact {
  padding: 80px 0;
  background: var(--color-white);
}
.contact .section-title { margin-bottom: 8px; }
.contact-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-form {
  background: var(--color-bg);
  padding: 36px;
  border-radius: var(--radius-lg);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 15px;
  font-family: var(--font);
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-card {
  background: var(--color-bg);
  padding: 24px;
  border-radius: var(--radius);
}
.contact-card h3 { font-size: 16px; margin-bottom: 8px; }
.contact-card p { font-size: 15px; color: var(--color-text-light); }
.text-small { font-size: 12px !important; margin-top: 4px; }

.form-success {
  text-align: center;
  padding: 40px 20px;
}
.form-success h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--color-accent);
}
.form-success p {
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ---- Footer ---- */
.footer {
  padding: 48px 0 32px;
  background: var(--color-text);
  color: var(--color-bg);
}
.footer-inner { text-align: center; }
.footer-brand { margin-bottom: 24px; }
.footer-brand .logo-text { color: var(--color-white); }
.footer-brand p {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-top: 8px;
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 24px;
}
.footer-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--color-white); }
.footer-copy {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .nav-links { display: none; }

  .hero { padding: 100px 0 60px; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  .hero h1 { font-size: 28px; }
  .hero-desc br { display: none; }
  .hero-cta { justify-content: center; flex-wrap: wrap; }
  .hero-illustration { width: 240px; height: 240px; }
  .illust-roof {
    border-left-width: 45px;
    border-right-width: 45px;
    border-bottom-width: 34px;
  }
  .illust-body { width: 75px; height: 52px; }

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

  .service-grid { grid-template-columns: 1fr; }

  .flow-steps { flex-direction: column; align-items: center; }
  .flow-connector {
    width: 2px;
    height: 24px;
    flex: 0 0 24px;
  }

  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .pricing-card.featured { transform: none; }
  .pricing-card.featured:hover { transform: translateY(-4px); }

  .contact-inner { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
}