/* ============================================================
   Go-on Inc. — style.css
   Pure CSS (no framework dependency)
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Noto Sans JP', 'Inter', sans-serif;
  background-color: #f8fafc;
  color: #0f172a;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg {
  display: block;
}

ul, ol {
  list-style: none;
}

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

/* ---------- Design Tokens ---------- */
:root {
  --blue-50:  #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-800: #1e40af;
  --blue-900: #1e3a8a;
  --slate-50:  #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);
  --shadow-lg: 0 10px 40px rgba(37,99,235,.12);
  --transition: 0.25s ease;
}

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.text-accent { color: var(--blue-600); }
.italic { font-style: italic; }

.section {
  padding-block: 6rem;
}

.section-white {
  background-color: #fff;
}

/* ---------- Section Header ---------- */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--slate-500);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

.section-divider {
  width: 3.5rem;
  height: 4px;
  background: var(--blue-600);
  border-radius: 999px;
  margin-inline: auto;
  margin-bottom: 1.25rem;
}

.section-body {
  color: var(--slate-500);
  max-width: 42rem;
  margin-inline: auto;
  font-size: 1rem;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding-block: 1.25rem;
  transition: background var(--transition), padding var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding-block: 0.75rem;
  box-shadow: 0 1px 0 rgba(0,0,0,.06);
}

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

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--slate-900);
  transition: opacity var(--transition);
}

.nav-logo:hover { opacity: 0.8; }

.nav-logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  background: var(--blue-600);
  border-radius: var(--radius-sm);
  color: #fff;
  transition: background var(--transition);
}

.nav-logo:hover .nav-logo-icon { background: var(--blue-700); }

.nav-logo-text em {
  color: var(--blue-600);
  font-style: normal;
}

/* Desktop Links */
.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-600);
  transition: color var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue-600);
  border-radius: 999px;
  transition: width var(--transition);
}

.nav-link:hover { color: var(--blue-600); }
.nav-link:hover::after { width: 100%; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--slate-900);
  border-radius: 999px;
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}

/* Open state */
.nav-toggle.open .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open .hamburger-line:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Mobile Menu ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: #fff;
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
  max-width: 320px;
}

.mobile-link {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--slate-800);
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--slate-100);
  transition: color var(--transition), padding-left var(--transition);
}

.mobile-link:hover {
  color: var(--blue-600);
  padding-left: 0.5rem;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  padding-top: 10rem;
  padding-bottom: 7rem;
  overflow: hidden;
}

.hero-bg-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--blue-50) 0%, transparent 60%);
  z-index: -1;
}

.hero-blob {
  position: absolute;
  bottom: -5rem;
  right: -5rem;
  width: 28rem;
  height: 28rem;
  background: var(--blue-100);
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  z-index: -1;
}

.hero-inner {
  position: relative;
}

.hero-content {
  max-width: 42rem;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-600);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.hero-heading {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--slate-900);
  margin-bottom: 1.5rem;
}

.hero-body {
  font-size: 1.1rem;
  color: var(--slate-600);
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.9rem 2rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  border: none;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--blue-600);
  color: #fff;
  box-shadow: 0 4px 20px rgba(37,99,235,.35);
}

.btn-primary:hover {
  background: var(--blue-700);
  box-shadow: 0 6px 28px rgba(37,99,235,.45);
}

.btn-secondary {
  background: #fff;
  color: var(--slate-700);
  border: 1.5px solid var(--slate-200);
}

.btn-secondary:hover {
  background: var(--slate-50);
  border-color: var(--slate-300);
}

/* ============================================================
   SERVICES
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: 1.75rem;
}

.service-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--slate-50);
  border: 1.5px solid transparent;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.service-card:hover {
  border-color: var(--blue-100);
  background: #fff;
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  color: var(--blue-600);
  margin-bottom: 1.25rem;
  transition: transform var(--transition);
}

.service-card:hover .service-icon {
  transform: scale(1.08);
}

.service-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--slate-900);
}

.service-desc {
  font-size: 0.875rem;
  color: var(--slate-600);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  padding: 0.25rem 0.75rem;
  background: var(--blue-50);
  color: var(--blue-700);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 999px;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(30,58,138,.2);
}

@media (min-width: 1024px) {
  .about-card {
    flex-direction: row;
  }
}

/* Left */
.about-text {
  background: var(--blue-900);
  padding: 3.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.about-heading {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 2rem;
}

.about-body {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  color: rgba(219,234,254,.75);
  font-size: 0.95rem;
  line-height: 1.85;
}

/* Right */
.about-values {
  background: var(--blue-800);
  padding: 3.5rem;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.value-blob {
  position: absolute;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.value-blob-top {
  top: 0;
  right: 0;
  background: #3b82f6;
  opacity: 0.15;
  transform: translate(40%, -40%);
}

.value-blob-bottom {
  bottom: 0;
  left: 0;
  background: #60a5fa;
  opacity: 0.1;
  transform: translate(-40%, 40%);
}

.values-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  width: 100%;
  max-width: 28rem;
}

.value-item {
  padding: 1.5rem;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  transition: background var(--transition);
}

.value-item:hover {
  background: rgba(255,255,255,.13);
}

.value-word {
  font-size: 1.5rem;
  font-weight: 800;
  font-style: italic;
  color: #fff;
  margin-bottom: 0.4rem;
  letter-spacing: -0.02em;
}

.value-desc {
  font-size: 0.78rem;
  color: #bfdbfe;
  line-height: 1.5;
}

/* ============================================================
   COMPANY PROFILE
   ============================================================ */
.profile-wrapper {
  max-width: 52rem;
  margin-inline: auto;
}

.profile-card {
  background: var(--slate-50);
  border: 1px solid var(--slate-100);
  border-radius: var(--radius-xl);
  padding: 2.5rem 3rem;
  box-shadow: var(--shadow-sm);
}

.profile-list {
  display: flex;
  flex-direction: column;
}

.profile-row {
  display: flex;
  flex-direction: column;
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--slate-200);
  gap: 0.5rem;
}

.profile-row:last-child { border-bottom: none; }

.profile-row--top { align-items: flex-start; }

@media (min-width: 640px) {
  .profile-row {
    flex-direction: row;
    align-items: center;
    gap: 0;
  }
  .profile-row--top { align-items: flex-start; }
}

.profile-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--slate-500);
  font-size: 0.875rem;
  font-weight: 500;
  min-width: 10rem;
  flex-shrink: 0;
}

.profile-icon {
  display: flex;
  align-items: center;
  color: var(--blue-600);
}

.profile-value {
  font-size: 1rem;
  color: var(--slate-800);
}

.profile-value--bold {
  font-weight: 700;
  font-size: 1.1rem;
}

.business-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.business-list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.875rem;
  color: var(--slate-700);
  line-height: 1.6;
}

.business-list li::before {
  content: '・';
  position: absolute;
  left: 0;
  color: var(--blue-600);
  font-weight: 700;
}

/* ============================================================
   QUOTE BANNER
   ============================================================ */
.quote-section {
  background: var(--slate-900);
  padding-block: 5rem;
  text-align: center;
  padding-inline: 1.5rem;
}

.quote-inner {
  max-width: 42rem;
  margin-inline: auto;
}

.quote-icon {
  color: var(--blue-500);
  opacity: 0.8;
  margin-inline: auto;
  margin-bottom: 1.5rem;
}

.quote-text {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 300;
  font-style: italic;
  color: #fff;
  line-height: 1.7;
}

.quote-chunk {
  display: inline-block;
  /* 前後の余白を少し調整したい場合はここに追加 */
  white-space: nowrap; /* 塊の中では絶対に改行させない指定 */
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--slate-950);
  color: var(--slate-400);
  padding-block: 3.5rem;
  padding-inline: 1.5rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.footer-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
  padding-bottom: 2.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .footer-top {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: #fff;
  transition: opacity var(--transition);
}

.footer-logo:hover { opacity: 0.75; }

.footer-nav {
  display: flex;
  gap: 2rem;
}

.footer-link {
  font-size: 0.85rem;
  color: var(--slate-400);
  transition: color var(--transition);
}

.footer-link:hover { color: #fff; }

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  font-size: 0.75rem;
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-copy { color: var(--slate-500); }

.footer-legal {
  display: flex;
  gap: 1.5rem;
  color: var(--slate-500);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 767px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }

  .hero { padding-top: 8rem; padding-bottom: 5rem; }
  .section { padding-block: 4rem; }
  .about-text, .about-values { padding: 2.5rem 1.75rem; }
  .profile-card { padding: 1.75rem; }
}

/* ============================================================
   SCROLL REVEAL ANIMATION
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.12s; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.19s; }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.26s; }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.33s; }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 0.40s; }

.reveal-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}