/* ============================================================
   Wolseong Corporate Site — Global Styles
   ============================================================ */

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

:root {
  --bg:        #080c12;
  --bg-2:      #0d1220;
  --bg-3:      #111827;
  --surface:   #131a26;
  --border:    rgba(255,255,255,0.08);
  --border-2:  rgba(255,255,255,0.14);
  --text:      #f0f2f5;
  --text-2:    #8a95a3;
  --text-3:    #4d5a68;
  --accent:    #1b3a6b;
  --accent-2:  #2d5faa;
  --gold:      #c9a96e;
  --gold-2:    #a07840;
  --radius:    4px;
  --radius-2:  8px;
  --max:       1160px;
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans JP', 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 2px; }

/* ── Typography ── */
.en { font-family: 'Inter', 'Helvetica Neue', sans-serif; letter-spacing: 0.02em; }

/* ── Layout ── */
.container { max-width: var(--max); margin: 0 auto; padding: 0 32px; }

/* ── Nav ── */
.nav {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 32px 0;
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'Inter', sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #fff;
}
.nav-logo span { color: var(--gold); }
.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}
.nav-links a {
  font-size: 15px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.65);
  text-transform: uppercase;
  transition: color 0.25s;
}
.nav-links a:hover { color: #fff; }
.nav-links a.active { color: #fff; }
.nav-cta {
  font-size: 14px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 13px 30px;
  border: 1px solid rgba(255,255,255,0.35);
  color: rgba(255,255,255,0.9);
  transition: all 0.25s;
}
.nav-cta:hover { border-color: var(--gold); color: var(--gold); }

.nav-hamburger { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.nav-hamburger span { display: block; width: 22px; height: 1.5px; background: rgba(255,255,255,0.7); transition: all 0.3s; }

/* ── Hero ── */
.hero {
  position: relative;
  height: 100svh;
  min-height: 640px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  background: var(--bg);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 70% 40%, rgba(27,58,107,0.35) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 20% 80%, rgba(201,169,110,0.08) 0%, transparent 60%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}
.hero-content {
  position: relative;
  z-index: 10;
  padding: 0 32px 80px;
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
}
.hero-eyebrow {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
  animation: fadeUp 0.8s var(--transition) 0.1s both;
}
.hero-headline {
  font-size: clamp(42px, 7vw, 96px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 32px;
  animation: fadeUp 1s var(--transition) 0.25s both;
}
.hero-headline .line { display: block; overflow: hidden; }
.hero-headline .accent { color: var(--gold); }
.hero-sub {
  font-size: 15px;
  color: var(--text-2);
  max-width: 480px;
  line-height: 1.8;
  margin-bottom: 48px;
  animation: fadeUp 0.8s var(--transition) 0.45s both;
}
.hero-actions {
  display: flex;
  gap: 20px;
  align-items: center;
  animation: fadeUp 0.8s var(--transition) 0.6s both;
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  right: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: fadeIn 1s ease 1s both;
}
.hero-scroll span {
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
  writing-mode: vertical-rl;
}
.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, transparent, var(--gold));
  animation: scrollLine 2s ease-in-out infinite;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--gold);
  color: #000;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: all 0.25s;
}
.btn-primary:hover { background: #e0be86; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.7);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: all 0.25s;
}
.btn-outline:hover { border-color: rgba(255,255,255,0.5); color: #fff; }

/* ── Section ── */
section { padding: 120px 0; }
.section-label {
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}
.section-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: #fff;
}
.section-title-en {
  font-family: 'Inter', sans-serif;
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: #fff;
}
.section-desc {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.9;
  max-width: 560px;
}

/* ── Divider ── */
.divider { height: 1px; background: var(--border); margin: 0; }

/* ── Mission Strip ── */
.mission-strip {
  padding: 80px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.mission-text {
  font-size: clamp(20px, 3vw, 34px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.6;
  color: #fff;
  max-width: 800px;
}
.mission-text .gold { color: var(--gold); }

/* ── Services Grid ── */
.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-top: 64px;
  background: var(--border);
}
.service-card {
  background: var(--bg);
  padding: 56px 48px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.service-card:hover { background: var(--surface); }
.service-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transition: width 0.4s ease;
}
.service-card:hover::before { width: 100%; }
.service-num {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-3);
  margin-bottom: 32px;
}
.service-title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 16px;
  color: #fff;
}
.service-title-en {
  font-family: 'Inter', sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 16px;
  color: #fff;
}
.service-desc { font-size: 14px; color: var(--text-2); line-height: 1.8; }
.service-arrow {
  margin-top: 40px;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
}
.service-arrow::after { content: '→'; }

/* ── Stats Row ── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  margin-top: 80px;
}
.stat-item {
  padding: 48px 40px;
  border-right: 1px solid var(--border);
  text-align: center;
}
.stat-item:last-child { border-right: none; }
.stat-num {
  font-family: 'Inter', sans-serif;
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: #fff;
  line-height: 1;
  margin-bottom: 8px;
}
.stat-num .unit { font-size: 24px; color: var(--gold); }
.stat-label { font-size: 12px; color: var(--text-2); letter-spacing: 0.05em; }

/* ── CTA Section ── */
.cta-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 100px 0;
  text-align: center;
}
.cta-title {
  font-size: clamp(24px, 3.5vw, 42px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 20px;
}
.cta-desc { font-size: 15px; color: var(--text-2); margin-bottom: 48px; }

/* ── Footer ── */
.footer {
  padding: 64px 0 40px;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: start;
  margin-bottom: 48px;
}
.footer-logo {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #fff;
  margin-bottom: 12px;
}
.footer-logo span { color: var(--gold); }
.footer-tagline { font-size: 12px; color: var(--text-3); letter-spacing: 0.05em; }
.footer-nav { display: flex; gap: 32px; list-style: none; }
.footer-nav a { font-size: 12px; color: var(--text-2); letter-spacing: 0.08em; transition: color 0.2s; }
.footer-nav a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.footer-copy { font-size: 11px; color: var(--text-3); letter-spacing: 0.08em; }
.footer-legal { display: flex; gap: 24px; }
.footer-legal a { font-size: 11px; color: var(--text-3); letter-spacing: 0.08em; transition: color 0.2s; }
.footer-legal a:hover { color: var(--text-2); }

/* ── Page Header ── */
.page-header {
  padding: 180px 0 100px;
  position: relative;
  overflow: hidden;
}
.page-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--border);
}
.page-header-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 80% at 80% 50%, rgba(27,58,107,0.2) 0%, transparent 70%);
}
.page-title {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: #fff;
  position: relative;
  z-index: 1;
}
.page-en {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

/* ── Company Table ── */
.info-table { width: 100%; border-collapse: collapse; }
.info-table tr { border-bottom: 1px solid var(--border); }
.info-table tr:first-child { border-top: 1px solid var(--border); }
.info-table th {
  padding: 24px 0;
  text-align: left;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-3);
  width: 200px;
  vertical-align: top;
}
.info-table td {
  padding: 24px 0 24px 40px;
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
}

/* ── Service Detail ── */
.service-detail { padding: 80px 0; border-bottom: 1px solid var(--border); }
.service-detail:last-child { border-bottom: none; }
.service-detail-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.service-tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.service-tag {
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 6px 16px;
  border: 1px solid var(--border-2);
  color: var(--text-2);
}
.feature-list { list-style: none; margin-top: 32px; }
.feature-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--text-2);
}
.feature-list li::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--gold);
  flex-shrink: 0;
}

/* ── Careers ── */
.positions-grid { display: grid; gap: 2px; background: var(--border); margin-top: 64px; }
.position-card {
  background: var(--bg);
  padding: 40px 48px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
  transition: background 0.25s;
  cursor: pointer;
}
.position-card:hover { background: var(--surface); }
.position-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.position-type {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-transform: uppercase;
}
.position-arrow { color: var(--text-3); font-size: 18px; transition: transform 0.25s, color 0.25s; }
.position-card:hover .position-arrow { transform: translateX(6px); color: var(--gold); }

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  margin-top: 48px;
}
.value-card {
  background: var(--surface);
  padding: 40px 32px;
  text-align: center;
}
.value-num {
  font-family: 'Inter', sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: rgba(255,255,255,0.06);
  letter-spacing: -0.05em;
  margin-bottom: 16px;
}
.value-title { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.value-desc { font-size: 13px; color: var(--text-2); line-height: 1.7; }

/* ── Contact Form ── */
.contact-form { max-width: 640px; }
.form-group { margin-bottom: 32px; }
.form-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 12px;
}
.form-label .req { color: var(--gold); margin-left: 4px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-2);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  padding: 12px 0;
  transition: border-color 0.25s;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-bottom-color: var(--gold);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-3); }
.form-select option { background: var(--bg-3); color: var(--text); }
.form-textarea { resize: none; min-height: 120px; }
.form-submit {
  margin-top: 48px;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 18px 48px;
  background: var(--gold);
  color: #000;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: background 0.25s;
  border: none;
  cursor: pointer;
}
.form-submit:hover { background: #e0be86; }
.form-submit:disabled { opacity: 0.5; cursor: not-allowed; }

.form-success {
  padding: 60px 0;
  text-align: center;
  display: none;
}
.form-success.show { display: block; }
.form-success h3 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.form-success p { font-size: 14px; color: var(--text-2); }

/* ── Document CTA ── */
.doc-cta {
  background: linear-gradient(135deg, var(--accent) 0%, var(--bg-3) 100%);
  border: 1px solid var(--border-2);
  padding: 64px 56px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
  margin-top: 80px;
}
.doc-cta-label {
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.doc-cta-title { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.doc-cta-desc { font-size: 14px; color: var(--text-2); }

/* ── Privacy ── */
.prose { max-width: 760px; }
.prose h2 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin: 48px 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.prose p, .prose li { font-size: 14px; color: var(--text-2); line-height: 1.9; }
.prose ul { padding-left: 20px; margin: 12px 0; }
.prose li { margin-bottom: 6px; }

/* ── Animations ── */
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  to { opacity: 1; }
}
@keyframes scrollLine {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.4); opacity: 0.3; }
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Header scroll hide/show */
.top-marquee {
  transition: transform 0.4s ease;
}
.site-header {
  transition: transform 0.4s ease;
}
.top-marquee.header-hidden {
  transform: translateY(-200px);
}
.site-header.header-hidden {
  transform: translateY(-200px);
}

/* Hamburger → X when nav open */
.nav-open .nav-hamburger span:nth-child(1) {
  transform: rotate(45deg) translate(4.5px, 4.5px);
}
.nav-open .nav-hamburger span:nth-child(2) {
  opacity: 0;
}
.nav-open .nav-hamburger span:nth-child(3) {
  transform: rotate(-45deg) translate(4.5px, -4.5px);
}
/* ナビ開いている時はsite-headerをモバイルナビの上に表示 */
.nav-open .site-header {
  z-index: 500;
}

/* ── Mobile ── */
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  section { padding: 80px 0; }
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .nav { padding: 16px 0; }
  .hero-content { padding: 0 20px 60px; }
  .hero-scroll { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .service-card { padding: 40px 24px; }
  .stats-row { grid-template-columns: 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--border); }
  .stat-item:last-child { border-bottom: none; }
  .service-detail-inner { grid-template-columns: 1fr; gap: 40px; }
  .doc-cta { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-nav { flex-wrap: wrap; gap: 16px; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .info-table th { width: 120px; }
  .info-table td { padding-left: 20px; }
  .position-card { padding: 28px 24px; }
  .page-header { padding: 140px 0 64px; }

  /* index.html モバイル固有 */
  .numbers-grid { grid-template-columns: 1fr; }
  .number-item { border-right: none; border-bottom: 1px solid var(--border); }
  .number-item:last-child { border-bottom: none; }
  .service-block-price { font-size: 11px; word-break: break-all; }
  .service-block-btn,
  .service-block-btn-outline { font-size: 11px; padding: 12px 20px; }
  .hero-btns { flex-direction: column; gap: 12px; }
  .hero-btns a { text-align: center; }
  .what-section { padding: 80px 0 0; }
  .apply-grid { grid-template-columns: 1fr !important; }
  .photo-values-grid { gap: 1px; }
}

/* Mobile Nav Drawer */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 200;
  display: flex;
  flex-direction: column;
  padding: 32px 24px;
  transform: translateX(100%);
  transition: transform 0.4s var(--transition);
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 60px;
}
.mobile-nav-logo {
  font-family: 'Inter', sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #fff;
}
.mobile-nav-close {
  font-size: 24px;
  color: var(--text-2);
  background: none;
  border: none;
  cursor: pointer;
}
.mobile-nav-links { list-style: none; }
.mobile-nav-links li { border-bottom: 1px solid var(--border); }
.mobile-nav-links a {
  display: block;
  padding: 20px 0;
  font-size: 20px;
  font-weight: 700;
  color: rgba(255,255,255,0.6);
  letter-spacing: -0.01em;
  transition: color 0.2s;
}
.mobile-nav-links a:hover { color: #fff; }
.mobile-nav-cta {
  margin-top: 40px;
  display: block;
  padding: 16px 32px;
  background: var(--gold);
  color: #000;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-align: center;
  text-transform: uppercase;
}

/* ── LOGO SIZE ── */
.site-logo { height: 52px; }
@media (max-width: 768px) {
  .site-logo { height: 34px !important; }
  .hero-service-tags { display: none !important; }
  .numbers-grid { grid-template-columns: 1fr !important; }
  .number-item { border-right: none !important; border-bottom: 1px solid var(--border) !important; }
  .number-item:last-child { border-bottom: none !important; }
}