/* ===================================
   COPAN - Responsive Styles
   Breakpoints:
     sp:     max-width 767px
     tablet: 768px - 1023px
=================================== */

/* Hamburger button (always in DOM, hidden on desktop) */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background-color: var(--color-main);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  padding: 10px 12px;
  z-index: 300;
  transition: background-color 0.2s ease, transform 0.2s ease;
}
.hamburger-btn:hover {
  background-color: #9a7838;
  transform: scale(1.05);
}
.hamburger-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: white;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.hamburger-btn.is-active {
  background-color: var(--color-text);
}
.hamburger-btn.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger-btn.is-active span:nth-child(2) {
  opacity: 0;
}
.hamburger-btn.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===========================
   MEDIUM PC (~ 1280px)
=========================== */
@media (max-width: 1280px) {
  /* Contact CTA: 3-col → 1-col, hide photo & decoration */
  .contact-cta-inner {
    grid-template-columns: 1fr;
    padding: 40px 48px;
    gap: 24px;
  }
  .contact-cta-photo { display: none; }
  .contact-cta-right { display: none; }
  .contact-cta-phone .phone-number { font-size: 40px; }
  .contact-cta-phone .phone-icon { width: 40px; height: 40px; }
}

/* ===========================
   TABLET (768px ~ 1023px)
=========================== */
@media (max-width: 1023px) {

  /* Header */
  .site-header { padding: 0 24px; height: 80px; }
  .header-logo img.logo-icon { width: 56px; height: 56px; }
  .header-logo img.logo-text { height: 36px; }
  .header-nav { gap: 28px; }
  .header-nav a { font-size: 16px; }
  .header-social a { font-size: 18px; }

  /* Hero */
  .hero-inner {
    padding: 60px 40px;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .hero-title { font-size: 40px; }
  .hero-image-wrap { height: 480px; }
  .hero-arch { width: 300px; height: 460px; border-radius: 150px 150px 0 0; }
  .hero-arch-outline { width: 300px; height: 460px; border-radius: 150px 150px 0 0; }

  /* Company */
  .company-inner { gap: 40px; padding: 0 40px; }
  .company-section { padding: 80px 0; }

  /* Business */
  .business-section { padding: 80px 40px; }
  .business-cards { gap: 20px; }
  .business-card-en { font-size: 26px; }

  /* Blog */
  .blog-section { padding: 80px 40px; }
  .blog-inner { padding: 40px 48px; }

  /* Contact CTA */
  .contact-cta-inner {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 36px 32px;
  }
  .contact-cta-phone .phone-number { font-size: 32px; }
  .contact-cta-phone .phone-icon { width: 36px; height: 36px; }

  /* Footer */
  .site-footer { padding: 48px 24px 32px; }
  .footer-inner {
    grid-template-columns: auto minmax(0, auto) auto auto 1fr;
    gap: 20px;
  }
  .footer-nav-title { font-size: 13px !important; }
  .footer-nav-col a { font-size: 11px; }

  /* Business page */
  .biz-top-inner { padding: 0 40px; }
  .biz-section-inner { padding: 0 40px; gap: 36px; }
  .biz-section-top { gap: 32px; }
  .biz-section-catchcopy { font-size: 44px; }
  .biz-section-top-image img { height: 260px; }
  .biz-section-label-en { font-size: 40px; }
  .biz-service-card img { height: 180px; }

  /* Company page */
  .message-content { grid-template-columns: 360px 1fr; gap: 40px; }
  .photo-placeholder { width: 360px; }
  .info-inner { padding: 0 40px; }
  .message-section { padding: 60px 40px; }
  .info-section { padding: 40px 40px 80px; }
}

/* ===========================
   SMARTPHONE (~ 767px)
=========================== */
@media (max-width: 767px) {

  /* ---- Header ---- */
  .site-header {
    height: 68px;
    padding: 0 20px;
  }
  .header-logo img.logo-icon { width: 46px; height: 46px; }
  .header-logo img.logo-text { height: 28px; }

  /* Nav → hamburger */
  .header-nav { display: none; }
  .header-social { display: none; }
  .hamburger-btn { display: flex; }

  /* Mobile nav overlay */
  .mobile-nav {
    position: fixed;
    inset: 0;
    background-color: rgba(240, 234, 220, 0.98);
    z-index: 200;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
  }
  .mobile-nav.is-open {
    opacity: 1;
    visibility: visible;
  }
  .mobile-nav a {
    font-family: 'Belleza', serif;
    font-size: 28px;
    color: var(--color-main);
    text-decoration: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.2s;
  }
  .mobile-nav.is-open a {
    opacity: 1;
    transform: translateY(0);
    transition-delay: calc(0.1s + var(--link-index, 0) * 0.08s);
  }
  .mobile-nav a:hover { color: var(--color-text); }
  .mobile-nav-close {
    position: absolute;
    top: 24px;
    right: 24px;
    background: none;
    border: none;
    font-size: 28px;
    color: var(--color-text);
    cursor: pointer;
    opacity: 0;
    transform: rotate(-90deg);
    transition: opacity 0.3s ease 0.2s, transform 0.3s ease 0.2s;
  }
  .mobile-nav.is-open .mobile-nav-close {
    opacity: 1;
    transform: rotate(0deg);
  }
  .mobile-nav-social {
    display: flex;
    gap: 24px;
    margin-top: 8px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease 0.46s, transform 0.4s ease 0.46s;
  }
  .mobile-nav.is-open .mobile-nav-social {
    opacity: 1;
    transform: translateY(0);
  }
  .mobile-nav-social a {
    font-size: 22px;
    color: var(--color-main);
  }

  /* ---- Hero ---- */
  .hero { padding-top: 68px; min-height: auto; }
  .hero-inner {
    grid-template-columns: 1fr;
    padding: 28px 20px 40px;
    gap: 12px;
    min-height: auto;
    align-items: start;
  }
  .hero-title { font-size: 26px; line-height: 1.5; }
  .hero-content { align-items: flex-start; gap: 16px; }
  .hero-body { font-size: 12px; line-height: 1.8; }
  .hero-badges { gap: 6px; }
  .hero-badge { font-size: 11px; }
  .hero-image-wrap { display: none; }

  /* ---- Company Section ---- */
  .company-section { padding: 64px 0; }
  .company-inner {
    grid-template-columns: 1fr;
    padding: 0 24px;
    gap: 32px;
  }
  .company-image img { max-width: 100%; height: 260px; }
  .company-tagline { font-size: 20px; }
  .company-body { font-size: 14px; }

  /* ---- Business Section ---- */
  .business-section { padding: 64px 24px; }
  .business-inner { padding: 0; }
  .business-header { margin-bottom: 36px; }
  .section-label { font-size: 44px; }
  .business-cards {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .business-card { padding: 20px 16px; border-radius: 24px; }
  .business-card-icon { height: 80px; margin-bottom: 0; }
  .business-card-en { font-size: 20px; }
  .business-card-ja { font-size: 13px; }
  .business-card-desc { font-size: 12px; }
  .business-more { justify-content: center; }

  /* ---- Blog Section ---- */
  .blog-section { padding: 64px 24px; }
  .blog-inner { padding: 32px 24px; border-radius: 28px; }
  .blog-item { flex-direction: column; gap: 6px; }
  .blog-date { font-size: 13px; min-width: auto; }
  .blog-title { font-size: 16px; }

  /* ---- Contact CTA ---- */
  .contact-cta { padding: 24px 16px; }
  .contact-cta-inner {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    padding: 28px 24px;
    border-radius: 28px;
    gap: 16px;
    position: relative;
  }
  .contact-cta-photo { display: none; }
  .contact-cta-right {
    display: block;
    position: absolute;
    bottom: 16px;
    right: 20px;
  }
  .contact-cta-right img { width: 72px; }
  .contact-cta-title { font-size: 22px; }
  .contact-cta-phone .phone-number { font-size: 26px; }
  .contact-cta-phone .phone-icon { width: 28px; height: 28px; }
  .contact-cta-phone { gap: 10px; }
  .contact-cta-desc { font-size: 13px; }
  .contact-cta .btn-primary { font-size: 14px; padding: 12px 24px; }

  /* ---- Footer ---- */
  .site-footer { padding: 32px 20px 24px; }
  .footer-inner {
    grid-template-columns: 1fr auto;
    gap: 8px 20px;
  }
  .footer-nav-col {
    grid-column: 1;
  }
  /* Hide sub-links on SP to keep compact */
  .footer-nav-col:nth-child(2) a:not(.footer-nav-title) { display: none; }
  .footer-nav-col a { font-size: 11px; }
  .footer-nav-title { font-size: 12px !important; margin-bottom: 0 !important; }
  .footer-logo-area {
    grid-column: 2;
    grid-row: 1 / span 4;
    justify-self: end;
    align-items: center;
  }
  .footer-logo { width: 60px; }
  .footer-social { gap: 10px; }
  .footer-social a { font-size: 13px; }
  .footer-license { font-size: 9px; white-space: nowrap; margin-top: 16px; padding-top: 12px; grid-column: 1 / -1; }
  .footer-copyright { text-align: left; font-size: 10px; grid-column: 1 / -1; }

  /* ---- Buttons ---- */
  .btn-primary { font-size: 16px; padding: 14px 24px; }
  .btn-secondary { font-size: 16px; padding: 14px 24px; }

  /* ===============================
     Company Page (sp)
  ================================ */
  .co-hero { padding-top: 100px; padding-bottom: 48px; }
  .co-hero-inner { padding: 0 24px; }
  .co-hero-logo img:first-child { width: 100px; }
  .co-hero-logo img:last-child { width: 200px; }
  .co-hero-tagline { font-size: 16px; }
  .co-hero-label { font-size: 24px; }

  .message-section { padding: 48px 24px; }
  .message-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .photo-placeholder { width: 100%; height: 320px; }
  .message-heading { font-size: 26px; }
  .message-body { font-size: 14px; }
  .message-sign { font-size: 13px; }

  .info-section { padding: 24px 0 64px; }
  .info-inner { max-width: 100%; padding: 0; }
  .company-table { width: 100%; }
  .company-table th { width: 90px; font-size: 13px; padding: 14px 12px; }
  .company-table td { font-size: 13px; padding: 14px 8px; }

  /* ===============================
     Business Page (sp)
  ================================ */
  .biz-top { padding-top: 100px; padding-bottom: 28px; }
  .biz-top-inner { padding: 0 24px; }
  .biz-categories {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  a.biz-category-card {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    padding: 24px 16px !important;
    gap: 8px !important;
    border-radius: 24px !important;
  }
  a.biz-category-card .biz-cat-image { height: 64px !important; width: 64px !important; }
  a.biz-category-card .biz-cat-en { font-size: 18px !important; }
  a.biz-category-card .biz-cat-ja { font-size: 12px !important; }

  .biz-section { padding: 48px 0; }
  .biz-section-inner { padding: 0 24px; gap: 28px; overflow: hidden; }
  .biz-section-top { grid-template-columns: 1fr; gap: 20px; }
  .biz-section-catchcopy { font-size: 36px; }
  .biz-section-top-image img { height: 200px; }
  .biz-section-label-en { font-size: 32px; }
  .biz-service-title { font-size: 20px; }
  .biz-content-2col { grid-template-columns: 1fr; gap: 28px; }

  /* All service grids: horizontal carousel with peek on SP */
  .biz-service-grid {
    display: flex !important;
    flex-direction: row;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 14px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    margin-left: -24px;
    padding-left: 24px;
    padding-right: 24px;
    width: calc(100% + 48px);
  }
  .biz-service-grid::-webkit-scrollbar {
    display: none;
  }
  .biz-service-card {
    min-width: 78vw;
    max-width: 78vw;
    flex-shrink: 0;
    scroll-snap-align: start;
    min-height: 340px;
  }
  .biz-service-card img { height: 160px; }
  .biz-item-desc {
    font-size: 13px;
    line-height: 1.9;
  }
  .biz-item-tag { font-size: 13px; }

  /* ===============================
     Contact Page (sp)
  ================================ */
  .contact-section { padding-top: 100px; padding-bottom: 64px; }
  .contact-inner { padding: 0 24px; }
  .contact-title { font-size: 30px; }
  .contact-intro { font-size: 15px; }
  .contact-notes { font-size: 13px; }

  .form-group {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 12px 0;
  }
  .form-label { font-size: 14px; }
  .form-input { height: 44px; font-size: 14px; }
  .form-section-note { font-size: 14px; }
  .form-textarea { font-size: 14px; }

  .recaptcha-area img { max-width: 260px; }
  .btn-submit { padding: 14px 60px; font-size: 16px; }

  /* Reduce stagger on mobile */
  .delay-100, .delay-200, .delay-300,
  .delay-400, .delay-500, .delay-600 {
    transition-delay: 0.05s;
  }
}