/* ===== Scroll Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.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; }

/* ===== About Summary (Top page) ===== */
.about-summary {
  padding: 64px 0;
  background: var(--navy-light);
}

.about-summary-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
  align-items: center;
}

.about-summary-left .section-label { text-align: left; }

.about-summary-left .btn {
  margin-top: 8px;
}

.section-cta {
  text-align: center;
  margin-top: 36px;
}

/* ===== Page Hero (Sub pages) ===== */
.page-hero {
  position: relative;
  padding: 140px 40px 64px;
  text-align: center;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(11, 23, 47, 0.75) 0%,
    rgba(11, 23, 47, 0.9) 100%
  );
  z-index: 0;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero .section-label {
  margin-bottom: 12px;
}

.page-hero-title {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.3;
  background: linear-gradient(135deg, var(--white-pure) 0%, var(--gray-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.page-hero .section-title {
  margin-bottom: 16px;
}

.page-hero-sub {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.9;
}

/* ===== Service Detail (Sub pages) ===== */
.service-detail {
  padding: 56px 0;
}

.service-detail--alt {
  background: var(--navy-light);
}

.service-detail-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

.service-detail-title {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}

.service-detail-subtitle {
  font-size: 0.8rem;
  color: var(--gray);
  letter-spacing: 0.08em;
}

.service-detail-desc {
  font-size: 0.95rem;
  color: var(--gray);
  line-height: 2;
  margin-bottom: 20px;
}

.service-detail-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.service-detail-list li {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.8;
  padding-left: 20px;
  position: relative;
  margin-bottom: 4px;
}

.service-detail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  opacity: 0.5;
}

.service-detail-cta {
  margin-top: 24px;
}

.store-buttons {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.store-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 10px;
  color: #fff;
  text-decoration: none;
  transition: border-color 0.3s;
}

.store-btn:hover {
  border-color: var(--teal);
}

.store-btn div {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.store-btn small {
  font-size: 0.65rem;
  opacity: 0.7;
}

.store-btn span {
  font-size: 0.95rem;
  font-weight: 600;
}

.store-btn--disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* Service Detail Content Layout */
.service-detail-content {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: center;
}

.service-detail-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.service-detail-image img {
  width: 100%;
  max-width: 320px;
  height: auto;
  border-radius: 12px;
  opacity: 0.85;
}

.service-image-overlay {
  position: relative;
  display: inline-block;
}

.service-image-overlay img {
  display: block;
}

.service-image-label {
  position: absolute;
  bottom: 12px;
  left: 12px;
  color: #fff;
  font-family: "Kosugi Maru", "Hiragino Maru Gothic Pro", sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.4;
  text-shadow: 0 1px 6px rgba(0,0,0,0.8);
  letter-spacing: 0.05em;
}

.service-image-label small {
  font-size: 0.65em;
  font-weight: 400;
  opacity: 0.9;
}

.service-detail-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.03em;
}

.service-detail-body p {
  font-size: 0.95rem;
  color: var(--gray);
  line-height: 2;
  margin-bottom: 12px;
}

.service-detail-body ul {
  list-style: none;
  padding: 0;
  margin-top: 16px;
}

.service-detail-body ul li {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.8;
  padding-left: 20px;
  position: relative;
  margin-bottom: 4px;
}

.service-detail-body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  opacity: 0.5;
}

/* ===== Product Badge ===== */
.product-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 20px;
  vertical-align: middle;
  margin-left: 10px;
}

.product-badge--dev {
  background: rgba(20, 184, 166, 0.15);
  color: var(--teal-light);
  border: 1px solid rgba(20, 184, 166, 0.3);
}

.product-badge--live {
  background: rgba(59, 130, 246, 0.15);
  color: #93c5fd;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.service-detail-logo {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.05);
  padding: 8px;
}

/* ===== Flow Detail (Sub pages) ===== */
.flow-detail-section {
  padding: 72px 0;
}

.flow-detail-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.flow-detail-card {
  background: var(--navy-light);
  border: 1px solid rgba(20, 184, 166, 0.06);
  border-radius: 12px;
  padding: 36px 40px;
  transition: border-color 0.3s, transform 0.3s;
  display: grid;
  grid-template-columns: 1fr 240px;
  grid-template-rows: auto auto auto;
  gap: 0 40px;
}

.flow-detail-card:hover {
  border-color: rgba(20, 184, 166, 0.2);
  transform: translateY(-4px);
}

.flow-detail-card .flow-num {
  font-size: 2.2rem;
  margin-bottom: 8px;
  grid-column: 1;
}

.flow-detail-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 16px;
  color: var(--white);
  grid-column: 1;
}

.flow-detail-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  grid-column: 1;
}

.flow-detail-list li {
  font-size: 0.92rem;
  color: var(--gray);
  line-height: 1.8;
  padding-left: 20px;
  position: relative;
}

.flow-detail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  opacity: 0.6;
}

/* Flow Card Image */
.flow-card-image {
  grid-column: 2;
  grid-row: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-card-image img {
  width: 100%;
  max-width: 240px;
  height: auto;
  border-radius: 8px;
  opacity: 0.85;
}

/* ===== History (沿革) ===== */
.history-timeline {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.history-item {
  display: flex;
  align-items: baseline;
  gap: 32px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(20, 184, 166, 0.06);
}

.history-item:last-child {
  border-bottom: none;
}

.history-date {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.08em;
  min-width: 80px;
  font-variant-numeric: tabular-nums;
}

.history-text {
  font-size: 0.95rem;
  color: var(--gray-light);
  line-height: 1.8;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 96px 0;
  background: var(--navy-light);
  text-align: center;
}

.cta-section .contact-lead {
  margin-top: -24px;
  margin-bottom: 40px;
}

/* ===== Mobile ===== */
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .header-inner { padding: 0 20px; }

  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(11, 23, 47, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 28px 24px;
    gap: 20px;
    transform: translateY(-120%);
    transition: transform 0.3s;
    border-bottom: 1px solid rgba(20, 184, 166, 0.08);
  }

  .nav.open { transform: translateY(0); }
  .nav a::after { display: none; }

  .menu-toggle { display: flex; }

  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .menu-toggle.active span:nth-child(2) { opacity: 0; }
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    min-height: 85vh;
    padding: 100px 20px 60px;
  }

  .hero-tagline { font-size: clamp(1.8rem, 8vw, 2.8rem); }
  .scroll-indicator { bottom: 24px; }
  .divider { padding: 0 20px; }

  .services { padding: 56px 0; }
  .about, .contact { padding: 48px 0; }

  .service-card { padding: 24px 20px; flex-wrap: wrap; }
  .service-card:hover { padding-left: 20px; }

  .about-intro,
  .about-summary-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .about-intro-left .section-label,
  .about-summary-left .section-label,
  .section-title--left {
    text-align: center;
  }

  .about-summary-left { text-align: center; }
  .about-summary-left .btn { display: inline-block; }

  .page-hero { padding: 110px 20px 48px; }

  .flow-detail-section { padding: 48px 0; }
  .cta-section { padding: 48px 0; }

  .flow-detail-card {
    padding: 32px 24px;
    grid-template-columns: 1fr;
  }

  .flow-card-image {
    grid-column: 1;
    grid-row: auto;
    margin: 16px 0;
  }

  .flow-card-image img {
    max-width: 180px;
  }

  .service-detail-content {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .service-detail-image {
    order: -1;
  }

  .service-detail-image img {
    max-width: 240px;
  }

  .accent-line { margin: 40px 0; }

  .profile-inner { padding: 28px 24px; }

  .mvv { grid-template-columns: 1fr; gap: 16px; }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .contact-form {
    text-align: left;
  }

  .contact-submit {
    align-self: stretch;
  }

  .contact-info .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-top {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }

  .footer-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }
}

/* ===== Contact Form Page ===== */
.contact-form-page {
  max-width: 640px;
  margin: 0 auto;
}

.contact-form-page .contact-submit {
  align-self: stretch;
  min-width: auto;
}

.contact-alt {
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid rgba(20, 184, 166, 0.1);
  text-align: center;
}

.contact-alt-lead {
  font-size: 0.88rem;
  color: var(--gray);
  margin-bottom: 16px;
}

.contact-alt-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.contact-alt-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--teal-light);
  transition: opacity 0.2s;
}

.contact-alt-item:hover {
  opacity: 0.7;
}

.contact-alt-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ===== Privacy Policy ===== */
.privacy-content {
  max-width: 800px;
  margin: 0 auto;
}

.privacy-section {
  margin-bottom: 40px;
}

.privacy-section:last-of-type {
  margin-bottom: 0;
}

.privacy-heading {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--white);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(20, 184, 166, 0.12);
}

.privacy-contact-info {
  margin-top: 12px;
  padding-left: 20px;
  border-left: 2px solid var(--teal);
}

.privacy-contact-info .about-text {
  margin-bottom: 4px;
  line-height: 1.8;
}

.privacy-date {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(20, 184, 166, 0.12);
  text-align: right;
}

.privacy-date .about-text {
  font-size: 0.88rem;
  color: var(--gray);
}

/* ===== Portfolio ===== */

.page-hero--gradient {
  background: linear-gradient(135deg, #0b172f 0%, #0f2847 40%, #0d3a4a 70%, #0b172f 100%);
}

.portfolio-section {
  padding: 64px 0;
}

.portfolio-grid {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.portfolio-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.portfolio-card:hover {
  border-color: rgba(20, 184, 166, 0.3);
  transform: translateY(-4px);
}

.portfolio-card-image {
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: #0f1d33;
}

.portfolio-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 24px;
  transition: transform 0.4s ease;
}

.portfolio-card:hover .portfolio-card-image img {
  transform: scale(1.05);
}

.portfolio-card-body {
  padding: 32px 32px 32px 0;
}

.portfolio-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.portfolio-num {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.1em;
}

.portfolio-tag {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--teal);
  background: rgba(20, 184, 166, 0.1);
  border: 1px solid rgba(20, 184, 166, 0.2);
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.04em;
}

.portfolio-card-body h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.portfolio-card-desc {
  color: var(--gray);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.portfolio-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}

.portfolio-tech li {
  font-size: 0.75rem;
  color: var(--gray);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px 12px;
  border-radius: 4px;
  letter-spacing: 0.04em;
}

.portfolio-link {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--teal);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.portfolio-link:hover {
  opacity: 0.7;
}

@media (max-width: 768px) {
  .portfolio-card {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .portfolio-card-body {
    padding: 24px;
  }

  .portfolio-card-image {
    aspect-ratio: 16 / 9;
  }
}