/* ===========================
   OKAJI — Luxury Buy & Sell
   =========================== */

:root {
  --black:    #0f0f0f;
  --dark:     #1a1a1a;
  --gold:     #c9a84c;
  --gold-lt:  #e2c97e;
  --cream:    #f5f0e8;
  --white:    #ffffff;
  --gray:     #888888;
  --font-en:  'Cormorant Garamond', Georgia, serif;
  --font-ja:  'Noto Serif JP', 'Yu Mincho', serif;
  --nav-h:    72px;
  --ease:     cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

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

body {
  font-family: var(--font-ja);
  background: var(--white);
  color: var(--dark);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

/* ── Typography ── */
.en-title { font-family: var(--font-en); }

/* ── Navbar ── */
#navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
#navbar.scrolled {
  background: rgba(15, 15, 15, 0.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(201, 168, 76, 0.2);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-en);
  font-size: 1.6rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  color: var(--gold);
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
}
.nav-links a {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.8);
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--gold); }
.nav-cta {
  border: 1px solid var(--gold) !important;
  color: var(--gold) !important;
  padding: 0.5rem 1.4rem;
  letter-spacing: 0.1em;
  transition: background 0.3s, color 0.3s !important;
}
.nav-cta:hover {
  background: var(--gold) !important;
  color: var(--black) !important;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--gold);
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ── Mobile Menu ── */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--nav-h));
  background: rgba(10,10,10,0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 99;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu ul { list-style: none; padding: 2rem 1.5rem; }
.mobile-menu li { border-bottom: 1px solid rgba(201,168,76,0.12); }
.mobile-menu a {
  display: block;
  padding: 1.1rem 0;
  color: rgba(255,255,255,0.85);
  font-size: 1rem;
  letter-spacing: 0.15em;
  transition: color 0.3s, padding-left 0.3s;
}
.mobile-menu a:active { color: var(--gold); padding-left: 0.5rem; }

/* ── Hero ── */
#hero {
  position: relative;
  height: calc(var(--vh, 1vh) * 100);
  min-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(15,15,15,0.92) 0%, rgba(26,26,26,0.85) 60%, rgba(20,18,12,0.9) 100%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23c9a84c' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  background-size: cover, 60px 60px;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  padding-top: var(--nav-h);
}
.hero-sub {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: 1.5rem;
}
.hero-title {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 1.8rem;
}
.en-title {
  font-family: var(--font-en);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--gold);
  line-height: 1;
}
.ja-title {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 200;
  letter-spacing: 0.3em;
  color: var(--white);
  line-height: 1.4;
}
.hero-desc {
  font-size: 0.95rem;
  line-height: 2;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.7);
  margin-bottom: 2.5rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 0.9rem 2.2rem;
  font-family: var(--font-ja);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  cursor: pointer;
  border: none;
  transition: all 0.3s var(--ease);
}
.btn-primary {
  background: var(--gold);
  color: var(--black);
  font-weight: 600;
}
.btn-primary:hover {
  background: var(--gold-lt);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201,168,76,0.3);
}
.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.4);
}
.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.btn-full { width: 100%; text-align: center; }

/* ── Hero Scroll Indicator ── */
.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  z-index: 2;
}
.hero-scroll span {
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  writing-mode: vertical-rl;
}
.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.4; transform: scaleY(0.6); }
}

/* ── Ticker ── */
.ticker-wrap {
  background: var(--gold);
  overflow: hidden;
  padding: 0.7rem 0;
}
.ticker {
  display: flex;
  white-space: nowrap;
  animation: ticker 25s linear infinite;
}
.ticker span {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--black);
  padding-right: 0;
}
@keyframes ticker {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ── Sections ── */
.section { padding: 7rem 0; }
.section-dark { background: var(--dark); }
.section-cream { background: var(--cream); }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}
.container-narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-label {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  margin-bottom: 1rem;
}
.section-label.light { color: var(--gold); }

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  line-height: 1.5;
  margin-bottom: 1.2rem;
  color: var(--dark);
}
.section-title.light { color: var(--white); }

.section-desc {
  font-size: 0.9rem;
  color: var(--gray);
  letter-spacing: 0.1em;
  line-height: 1.8;
  margin-bottom: 3.5rem;
}
.section-desc.light { color: rgba(255,255,255,0.6); }

/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.about-text h2 { margin-bottom: 1.5rem; }
.about-text p {
  font-size: 0.9rem;
  line-height: 2;
  color: #555;
  margin-bottom: 1rem;
}
.about-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(201,168,76,0.25);
}
.stat { display: flex; flex-direction: column; gap: 0.3rem; }
.stat-num {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 300;
  color: var(--gold);
  line-height: 1;
}
.stat-num small { font-size: 1rem; }
.stat-label { font-size: 0.75rem; letter-spacing: 0.1em; color: var(--gray); }

.about-visual { display: flex; justify-content: center; }
.about-image-frame {
  width: 380px;
  aspect-ratio: 1;
  border: 1px solid rgba(201,168,76,0.3);
  padding: 2rem;
  position: relative;
}
.about-image-frame::before,
.about-image-frame::after {
  content: '';
  position: absolute;
  width: 30px;
  height: 30px;
  border-color: var(--gold);
  border-style: solid;
}
.about-image-frame::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.about-image-frame::after  { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }
.about-image-inner {
  width: 100%;
  height: 100%;
  border: 1px solid rgba(201,168,76,0.15);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  background: var(--cream);
}
.about-ornament svg { width: 140px; height: 140px; opacity: 0.6; }
.about-quote {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--dark);
  text-align: center;
  line-height: 1.8;
}

/* ── Items ── */
.items-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border: 1px solid rgba(201,168,76,0.15);
}
.item-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(201,168,76,0.1);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background 0.3s;
}
.item-card:hover { background: rgba(201,168,76,0.06); }
.item-icon svg { width: 50px; height: 50px; }
.item-card h3 {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--white);
}
.item-card p {
  font-size: 0.82rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.55);
}

/* ── Flow ── */
.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}
.flow-step {
  padding: 2rem 1.5rem 2rem 0;
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto;
}
.step-num {
  font-family: var(--font-en);
  font-size: 3rem;
  font-weight: 300;
  color: rgba(201,168,76,0.2);
  line-height: 1;
  margin-bottom: 1rem;
}
.step-content h3 {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 0.7rem;
}
.step-content p {
  font-size: 0.82rem;
  line-height: 1.9;
  color: #666;
}
.step-arrow {
  font-size: 1.5rem;
  color: var(--gold);
  opacity: 0.4;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

/* ── Features ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.feature {
  padding: 2.5rem 1.5rem;
  border: 1px solid rgba(201,168,76,0.2);
  background: var(--white);
  transition: box-shadow 0.3s, transform 0.3s;
}
.feature:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}
.feature-num {
  font-family: var(--font-en);
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--gold);
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}
.feature h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 0.8rem;
  color: var(--dark);
}
.feature p {
  font-size: 0.82rem;
  line-height: 1.9;
  color: #777;
}

/* ── Contact Form ── */
.contact-form {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(201,168,76,0.2);
  padding: 3rem;
  margin-bottom: 2.5rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1.5rem; }
.form-group label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.7);
}
.required { color: var(--gold); }
.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(201,168,76,0.25);
  color: var(--white);
  padding: 0.85rem 1rem;
  font-family: var(--font-ja);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s;
  -webkit-appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.3); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--gold); }
.form-group select option { background: var(--dark); color: var(--white); }
.form-check { margin-bottom: 1.8rem; }
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.6);
  cursor: pointer;
}
.checkbox-label input { width: auto; }
.link-gold { color: var(--gold); border-bottom: 1px solid rgba(201,168,76,0.4); }

.contact-alt {
  text-align: center;
  padding: 2rem 0;
  border-top: 1px solid rgba(201,168,76,0.15);
}
.contact-alt p {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 0.5rem;
}
.phone-num {
  font-family: var(--font-en);
  font-size: 2.2rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--gold);
  display: block;
  margin-bottom: 0.5rem;
}
.hours { font-size: 0.78rem !important; }

/* ── Company ── */
.company-name-main {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 400;
  letter-spacing: 0.15em;
  color: #ffffff !important;
  margin-bottom: 1rem;
  display: block;
}

/* ── Footer ── */
footer {
  background: var(--black);
  border-top: 1px solid rgba(201,168,76,0.15);
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3.5rem 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
  align-items: start;
}
.footer-brand .logo { font-size: 1.4rem; margin-bottom: 0.5rem; display: block; }
.footer-brand p { font-size: 0.78rem; color: rgba(255,255,255,0.4); letter-spacing: 0.1em; }
.footer-service { color: var(--gold) !important; font-size: 0.85rem !important; margin-top: 1rem !important; letter-spacing: 0.08em !important; }
.footer-info p { font-size: 0.78rem; color: rgba(255,255,255,0.45); line-height: 2; letter-spacing: 0.05em; }
.footer-links { display: flex; flex-direction: column; gap: 0.7rem; align-items: flex-end; }
.footer-links a { font-size: 0.75rem; color: rgba(255,255,255,0.4); letter-spacing: 0.08em; transition: color 0.3s; }
.footer-links a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 1.2rem 2rem;
  text-align: center;
}
.footer-bottom p { font-size: 0.72rem; color: rgba(255,255,255,0.25); letter-spacing: 0.15em; font-family: var(--font-en); }

/* ── Fade-in Animation ── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.9s var(--ease) forwards;
}
.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }
@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ── */

/* タブレット横 */
@media (max-width: 1100px) {
  .container { padding: 0 1.5rem; }
  .about-grid { gap: 3rem; }
  .features-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .flow-steps { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .step-arrow { display: none; }
  .items-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-links { grid-column: 1 / -1; flex-direction: row; flex-wrap: wrap; gap: 1rem; }
}

/* タブレット縦 */
@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  /* ナビ */
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: block; }
  .nav-inner { padding: 0 1.2rem; }
  .logo { font-size: 1.35rem; }

  /* ヒーロー */
  #hero { min-height: 100svh; }
  .hero-content { padding: 0 1.2rem; padding-top: calc(var(--nav-h) + 2rem); }
  .hero-sub { font-size: 0.7rem; }
  .en-title { letter-spacing: 0.12em; }
  .ja-title { letter-spacing: 0.18em; }
  .hero-desc { font-size: 0.88rem; }
  .hero-actions { flex-direction: column; width: 100%; }
  .btn { width: 100%; text-align: center; padding: 1rem; }
  .hero-scroll { display: none; }

  /* セクション */
  .section { padding: 4.5rem 0; }
  .container { padding: 0 1.2rem; }
  .container-narrow { padding: 0 1.2rem; }
  .section-title { font-size: clamp(1.5rem, 5vw, 2rem); }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-visual { display: none; }
  .about-text p { font-size: 0.88rem; }
  .about-stats { gap: 1.5rem; padding-top: 1.5rem; margin-top: 1.5rem; }
  .stat-num { font-size: 1.6rem; }

  /* Items */
  .items-grid { grid-template-columns: 1fr 1fr; }
  .item-card { padding: 1.8rem 1.2rem; gap: 0.8rem; }
  .item-card p { font-size: 0.78rem; }

  /* Flow */
  .flow-steps { grid-template-columns: 1fr; gap: 0; }
  .flow-step {
    padding: 1.5rem 1rem 1.5rem 3.5rem;
    border-left: 1px solid rgba(201,168,76,0.25);
    position: relative;
  }
  .step-num {
    position: absolute;
    left: 0.5rem;
    top: 1.5rem;
    font-size: 1.6rem;
    margin-bottom: 0;
  }
  .step-content h3 { font-size: 0.9rem; }
  .step-content p { font-size: 0.8rem; }

  /* Features */
  .features-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .feature { padding: 1.8rem 1.2rem; }
  .feature h3 { font-size: 0.9rem; }
  .feature p { font-size: 0.78rem; }

  /* Contact */
  .contact-form { padding: 1.5rem 1.2rem; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .form-group { margin-bottom: 1.2rem; }
  .form-group input,
  .form-group select,
  .form-group textarea { padding: 0.75rem 0.9rem; font-size: 0.88rem; }
  .phone-num { font-size: 1.8rem; }

  /* Footer */
  .footer-inner { grid-template-columns: 1fr; gap: 1.5rem; padding: 2.5rem 1.2rem; }
  .footer-links { flex-direction: column; gap: 0.6rem; align-items: flex-start; }
}

/* スマートフォン */
@media (max-width: 480px) {
  .section { padding: 3.5rem 0; }
  .section-desc { font-size: 0.82rem; margin-bottom: 2.5rem; }

  /* Items: 1カラム */
  .items-grid { grid-template-columns: 1fr; }
  .item-card { flex-direction: row; align-items: flex-start; gap: 1rem; padding: 1.4rem 1rem; }
  .item-icon svg { width: 36px; height: 36px; flex-shrink: 0; }
  .item-card h3 { font-size: 0.9rem; margin-bottom: 0.3rem; }

  /* Features: 1カラム */
  .features-grid { grid-template-columns: 1fr; }

  /* About stats */
  .about-stats { flex-wrap: wrap; gap: 1.2rem; }
  .stat { min-width: 80px; }

  /* Ticker */
  .ticker span { font-size: 0.65rem; }

  /* Contact */
  .contact-form { padding: 1.2rem 1rem; }
  .contact-alt { padding: 1.5rem 0; }
  .phone-num { font-size: 1.5rem; letter-spacing: 0.08em; }

  /* Footer */
  .footer-bottom { padding: 1rem 1.2rem; }
  .footer-links { flex-direction: column; }
}

/* 極小デバイス (320px) */
@media (max-width: 360px) {
  .hero-content { padding: 0 1rem; padding-top: calc(var(--nav-h) + 1.5rem); }
  .en-title { letter-spacing: 0.08em; }
  .ja-title { letter-spacing: 0.1em; }
  .hero-desc { font-size: 0.82rem; }
  .mobile-menu ul { padding: 1rem; }
  .items-grid { grid-template-columns: 1fr; }
}

/* ── Django Messages ── */
.alert {
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  border-left: 3px solid var(--gold);
}
.alert-success { background: rgba(74,124,89,0.15); color: #a8d5b5; border-color: #4a7c59; }
.alert-error   { background: rgba(180,60,60,0.15);  color: #f5a0a0; border-color: #b43c3c; }