/* ==========================================================================
   株式会社オフィスアカネ - Corporate Website Stylesheet
   ========================================================================== */

:root {
  --color-navy: #0f2447;
  --color-navy-dark: #081633;
  --color-gold: #b8933f;
  --color-gold-light: #d6b876;
  --color-gray-900: #1a1a1a;
  --color-gray-700: #4a4a4a;
  --color-gray-500: #767676;
  --color-gray-200: #e5e5e5;
  --color-gray-100: #f5f5f3;
  --color-white: #ffffff;
  --font-serif: "Noto Serif JP", serif;
  --font-sans: "Noto Sans JP", sans-serif;
  --container-width: 1140px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-gray-900);
  line-height: 1.8;
  background: var(--color-white);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
}

@media (max-width: 768px) {
  section {
    padding: 64px 0;
  }
}

/* ---------- Section Heading ---------- */
.section-head {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-serif);
  color: var(--color-gold);
  letter-spacing: 0.2em;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--color-gray-700);
  font-size: 1rem;
  max-width: 640px;
  margin: 0 auto;
}

.section-head.left {
  text-align: left;
  margin-left: 0;
}
.section-head.left .section-desc {
  margin: 0;
}

/* ---------- Header ---------- */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(15, 36, 71, 0.0);
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
  padding: 18px 0;
}

#site-header.scrolled {
  background: rgba(15, 36, 71, 0.96);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
  padding: 10px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border: 2px solid var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold-light);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.brand-text {
  color: var(--color-white);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  line-height: 1.3;
}

.brand-text span {
  display: block;
  font-size: 0.65rem;
  color: var(--color-gold-light);
  font-family: var(--font-sans);
  letter-spacing: 0.15em;
  font-weight: 400;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
}

.main-nav a {
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  position: relative;
  padding: 6px 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--color-gold);
  transition: width var(--transition);
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--color-gold);
  color: var(--color-navy-dark) !important;
  padding: 10px 22px !important;
  border-radius: 4px;
  font-weight: 700 !important;
}

.nav-cta::after {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1100;
}

.nav-toggle span {
  width: 26px;
  height: 2px;
  background: var(--color-white);
  display: block;
}

/* ---------- Hero ---------- */
#hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  color: var(--color-white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("../images/hero-building.jpg");
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(8, 22, 51, 0.92) 20%, rgba(15, 36, 71, 0.55) 75%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-eyebrow {
  display: inline-block;
  border: 1px solid var(--color-gold-light);
  color: var(--color-gold-light);
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  margin-bottom: 24px;
}

.hero-content h1 {
  font-family: var(--font-serif);
  font-size: 2.7rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 22px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.hero-content h1 em {
  display: block;
  color: var(--color-gold-light);
  font-style: normal;
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.hero-content p {
  font-size: 1.02rem;
  color: #dfe4ee;
  margin-bottom: 34px;
  max-width: 560px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.05em;
  transition: all var(--transition);
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-gold);
  color: var(--color-navy-dark);
}

.btn-primary:hover {
  background: var(--color-gold-light);
  transform: translateY(-2px);
}

.btn-outline {
  border-color: rgba(255,255,255,0.6);
  color: var(--color-white);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--color-white);
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--color-white);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.8;
}

.hero-scroll .line {
  width: 1px;
  height: 34px;
  background: var(--color-white);
  animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ---------- Trust bar ---------- */
#trust-bar {
  background: var(--color-navy);
  color: var(--color-white);
  padding: 22px 0;
}

.trust-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.trust-inner strong {
  color: var(--color-gold-light);
}

.trust-list {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

/* ---------- About ---------- */
#about {
  background: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  border-radius: 6px;
  box-shadow: 0 20px 40px rgba(15, 36, 71, 0.18);
}

.about-image .about-badge {
  position: absolute;
  bottom: -24px;
  right: -24px;
  background: var(--color-navy);
  color: var(--color-white);
  padding: 20px 26px;
  border-radius: 6px;
  text-align: center;
  box-shadow: 0 10px 24px rgba(0,0,0,0.2);
}

.about-badge .num {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-gold-light);
  font-weight: 700;
  display: block;
}

.about-badge .label {
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: #cfd6e4;
}

.about-text h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-navy);
  margin-bottom: 20px;
  line-height: 1.6;
}

.about-text p {
  color: var(--color-gray-700);
  margin-bottom: 18px;
}

.company-table {
  width: 100%;
  margin-top: 24px;
  border-top: 1px solid var(--color-gray-200);
}

.company-table tr {
  border-bottom: 1px solid var(--color-gray-200);
}

.company-table th,
.company-table td {
  text-align: left;
  padding: 14px 10px;
  font-size: 0.9rem;
  vertical-align: top;
}

.company-table th {
  width: 130px;
  color: var(--color-navy);
  font-weight: 700;
  white-space: nowrap;
}

.company-table td {
  color: var(--color-gray-700);
}

/* ---------- Business (Services) ---------- */
#business {
  background: var(--color-gray-100);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.business-card {
  background: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(15, 36, 71, 0.08);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.business-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 30px rgba(15, 36, 71, 0.15);
}

.business-card .card-image {
  height: 190px;
  overflow: hidden;
  position: relative;
}

.business-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.business-card .card-index {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15,36,71,0.85);
  color: var(--color-gold-light);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.05em;
}

.business-card .card-body {
  padding: 26px 26px 30px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.business-card h3 {
  font-family: var(--font-serif);
  color: var(--color-navy);
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.business-card p {
  color: var(--color-gray-700);
  font-size: 0.9rem;
  flex: 1;
}

.business-card .tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 0.72rem;
  color: var(--color-gold);
  letter-spacing: 0.1em;
  font-weight: 700;
  border-top: 1px solid var(--color-gray-200);
  padding-top: 14px;
}

/* ---------- Strength / Numbers ---------- */
#strength {
  background: var(--color-navy);
  color: var(--color-white);
  position: relative;
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.strength-item .icon {
  font-size: 1.8rem;
  color: var(--color-gold-light);
  margin-bottom: 16px;
}

.strength-item h4 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  font-family: var(--font-serif);
}

.strength-item p {
  font-size: 0.85rem;
  color: #c3cadb;
}

/* ---------- Bank / Partners ---------- */
#partners {
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
  border-bottom: 1px solid var(--color-gray-200);
}

.bank-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.bank-card {
  border: 1px solid var(--color-gray-200);
  border-radius: 8px;
  padding: 30px 20px;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.bank-card:hover {
  border-color: var(--color-gold);
  box-shadow: 0 8px 20px rgba(184, 147, 63, 0.15);
}

.bank-card .bank-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-gray-100);
  color: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.4rem;
}

.bank-card h4 {
  font-size: 0.95rem;
  color: var(--color-navy);
  font-weight: 700;
}

/* ---------- Message / Recruit ---------- */
#recruit {
  background: var(--color-gray-100);
}

.recruit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.recruit-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(15,36,71,0.15);
}

.recruit-text h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-navy);
  margin-bottom: 18px;
}

.recruit-text p {
  color: var(--color-gray-700);
  margin-bottom: 26px;
}

.recruit-points {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 30px;
}

.recruit-point {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.92rem;
  color: var(--color-gray-900);
}

.recruit-point i {
  color: var(--color-gold);
  margin-top: 3px;
}

/* ---------- News ---------- */
#news {
  background: var(--color-white);
}

.news-list {
  border-top: 1px solid var(--color-gray-200);
}

.news-item {
  display: flex;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-gray-200);
  align-items: baseline;
  flex-wrap: wrap;
}

.news-date {
  color: var(--color-gray-500);
  font-size: 0.85rem;
  min-width: 110px;
  font-family: var(--font-serif);
}

.news-tag {
  display: inline-block;
  background: var(--color-gray-100);
  color: var(--color-navy);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 4px;
  min-width: 90px;
  text-align: center;
}

.news-title {
  color: var(--color-gray-900);
  font-size: 0.94rem;
  flex: 1;
}

/* ---------- Contact ---------- */
#contact {
  background: var(--color-navy);
  color: var(--color-white);
}

#contact .section-title,
#contact .section-desc {
  color: var(--color-white);
}

#contact .section-desc {
  color: #c3cadb;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 50px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.info-block {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.info-block .info-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: var(--color-gold-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
}

.info-block h4 {
  font-size: 0.9rem;
  color: var(--color-gold-light);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.info-block p {
  font-size: 0.92rem;
  color: #dfe4ee;
}

.contact-form {
  background: var(--color-white);
  border-radius: 8px;
  padding: 36px;
  color: var(--color-gray-900);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-navy);
}

.form-group label .req {
  color: #c0392b;
  font-size: 0.75rem;
  margin-left: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-gray-200);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  background: var(--color-gray-100);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-gold);
  background: var(--color-white);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  width: 100%;
  background: var(--color-navy);
  color: var(--color-white);
  border: none;
  padding: 15px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background var(--transition);
}

.form-submit:hover {
  background: var(--color-navy-dark);
}

.form-note {
  font-size: 0.78rem;
  color: var(--color-gray-500);
  margin-top: 12px;
  text-align: center;
}

.form-success {
  display: none;
  background: #eef6ee;
  border: 1px solid #a9d5a9;
  color: #256a25;
  padding: 16px;
  border-radius: 4px;
  margin-bottom: 18px;
  font-size: 0.9rem;
  text-align: center;
}

.form-success.show {
  display: block;
}

/* ---------- Footer ---------- */
#site-footer {
  background: var(--color-navy-dark);
  color: #aab4c8;
  padding: 56px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .brand-text {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.85rem;
  color: #8b95ac;
  max-width: 320px;
}

.footer-col h5 {
  color: var(--color-white);
  font-size: 0.9rem;
  margin-bottom: 18px;
  letter-spacing: 0.05em;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.85rem;
  color: #aab4c8;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--color-gold-light);
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.78rem;
  color: #6f7a94;
}

/* ---------- Page header (sub pages) ---------- */
.page-header {
  background: linear-gradient(120deg, rgba(8,22,51,0.94), rgba(15,36,71,0.85)), url("../images/office-building-2.jpg");
  background-size: cover;
  background-position: center;
  color: var(--color-white);
  padding: 170px 0 70px;
  text-align: center;
}

.page-header .section-tag {
  color: var(--color-gold-light);
}

.page-header h1 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  margin-top: 8px;
}

.breadcrumb {
  margin-top: 16px;
  font-size: 0.82rem;
  color: #c3cadb;
}

.breadcrumb a {
  color: var(--color-gold-light);
}

/* ---------- Back to top ---------- */
#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-navy);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition), background var(--transition);
  z-index: 900;
  border: none;
}

#back-to-top.show {
  opacity: 1;
  visibility: visible;
}

#back-to-top:hover {
  background: var(--color-gold);
  color: var(--color-navy-dark);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 992px) {
  .about-grid,
  .recruit-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .about-image {
    margin-bottom: 20px;
  }
  .business-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .strength-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 34px;
  }
  .bank-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 78%;
    max-width: 320px;
    background: var(--color-navy-dark);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 40px;
    gap: 24px;
    transition: right var(--transition);
  }
  .main-nav.open {
    right: 0;
    box-shadow: -8px 0 24px rgba(0,0,0,0.3);
  }
  .nav-toggle {
    display: flex;
  }
  .hero-content h1 {
    font-size: 2rem;
  }
  .business-grid {
    grid-template-columns: 1fr;
  }
  .strength-grid {
    grid-template-columns: 1fr 1fr;
  }
  .bank-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .page-header {
    padding: 130px 0 50px;
  }
  .about-image .about-badge {
    right: 10px;
    bottom: -20px;
    padding: 14px 18px;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.6rem;
  }
  .hero-buttons {
    flex-direction: column;
  }
  .btn {
    text-align: center;
  }
}