/* ===========================
   Super Shift Corporate Site
   =========================== */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f7fa;
  --color-surface: #ffffff;
  --color-text: #111122;
  --color-text-muted: #4a4a60;
  --color-accent: #6c5ce7;
  --color-accent-2: #7c6cf0;
  --color-accent-glow: rgba(108, 92, 231, 0.1);
  --color-border: rgba(0, 0, 0, 0.08);
  --font-main: 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', sans-serif;
  --header-h: 72px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 1000;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(24px);
  box-shadow: 0 1px 0 var(--color-border);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: baseline; gap: 8px; }
.logo-main {
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.nav { display: flex; gap: 32px; }
.nav-link {
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.3s ease;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--color-accent);
  transition: width 0.3s var(--ease);
}
.nav-link:hover { color: var(--color-text); }
.nav-link:hover::after { width: 100%; }

.hamburger {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 28px; height: 20px;
  position: relative; z-index: 1001;
}
.hamburger span {
  display: block; width: 100%; height: 1.5px;
  background: var(--color-text);
  position: absolute; left: 0;
  transition: all 0.3s ease;
}
.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger span:nth-child(3) { bottom: 0; }
.hamburger.active span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; }
#heroCanvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
}
.hero-gradient {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 50% 60%, rgba(108, 92, 231, 0.06), transparent),
    radial-gradient(ellipse 50% 30% at 20% 80%, rgba(167, 139, 250, 0.04), transparent);
}
.hero-content {
  position: relative; z-index: 1;
  text-align: center; padding: 0 24px;
  max-width: 900px;
}
.hero-label {
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.5em;
  color: var(--color-accent-2);
  margin-bottom: 32px;
  font-weight: 500;
}
.hero-title {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}
.hero-title-line { display: block; }
.accent-line {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 900;
}
.hero-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 2;
  margin-bottom: 40px;
  font-weight: 400;
}
.hero-cta {
  display: flex; gap: 16px;
  justify-content: center; flex-wrap: wrap;
}
.hero-scroll {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column;
  align-items: center; gap: 8px;
  color: var(--color-text-muted);
  font-family: var(--font-en);
  font-size: 0.6rem; letter-spacing: 0.2em;
}
.hero-scroll-line {
  width: 1px; height: 40px;
  background: var(--color-text-muted);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center; justify-content: center;
  padding: 15px 40px;
  font-size: 0.85rem;
  font-family: var(--font-main);
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: 6px;
  transition: all 0.3s var(--ease);
  cursor: pointer; border: none;
  position: relative; overflow: hidden;
}
.btn span { position: relative; z-index: 1; }
.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), #5a4bd4);
  color: #fff;
  box-shadow: 0 4px 20px rgba(108, 92, 231, 0.25);
}
.btn-primary::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #5a4bd4, var(--color-accent-2));
  opacity: 0; transition: opacity 0.3s ease;
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover {
  box-shadow: 0 8px 32px rgba(108, 92, 231, 0.35);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid rgba(0, 0, 0, 0.15);
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(108, 92, 231, 0.04);
}
.btn-full { width: 100%; padding: 18px; }

/* ===== Sections Common ===== */
.section {
  padding: 120px 0;
  position: relative;
}
.section-header { margin-bottom: 56px; }
.section-label {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  color: var(--color-accent-2);
  margin-bottom: 16px;
  font-weight: 500;
}
.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.section-subtitle {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 2;
}

/* ===== Mission ===== */
.section-mission {
  background: var(--color-bg-alt);
  padding: 140px 0;
}
.mission-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.mission-quote {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 32px 0 40px;
}
.mission-line {
  font-size: clamp(1.2rem, 2.8vw, 1.8rem);
  font-weight: 700;
  line-height: 1.8;
  letter-spacing: 0.04em;
}
.mission-line:last-child {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 900;
}
.mission-body {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 2.2;
  font-weight: 400;
}

/* ===== Services ===== */
.section-services { background: var(--color-bg); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  transition: border-color 0.4s ease, transform 0.3s var(--ease), box-shadow 0.4s ease;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}
.service-card:hover {
  border-color: rgba(108, 92, 231, 0.25);
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.08);
}
.service-card-inner { padding: 40px 32px; }
.service-number {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-accent-2);
  font-weight: 600;
  margin-bottom: 24px;
}
.service-icon {
  width: 48px; height: 48px;
  color: var(--color-accent-2);
  margin-bottom: 24px;
}
.service-title {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.service-title-ja {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}
.service-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: 24px;
}
.service-features {
  list-style: none;
  margin-bottom: 20px;
}
.service-features li {
  font-size: 0.84rem;
  color: var(--color-text-muted);
  padding: 5px 0 5px 16px;
  position: relative;
}
.service-features li::before {
  content: '';
  position: absolute; left: 0; top: 50%;
  width: 6px; height: 1px;
  background: var(--color-accent-2);
}
.service-link {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--color-accent-2);
  font-weight: 500;
  transition: letter-spacing 0.3s ease;
  margin-top: 8px;
}
.service-link:hover { letter-spacing: 0.08em; }

/* ===== Approach ===== */
.section-approach {
  background: var(--color-bg-alt);
  padding: 100px 0;
}
.approach-box {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 64px;
  text-align: center;
}
.approach-title {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 700;
  margin: 24px 0 16px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.approach-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 2;
  margin-bottom: 48px;
}
.approach-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: left;
}
.approach-item {
  padding: 32px;
  border-left: 2px solid var(--color-border);
  transition: border-color 0.3s ease;
}
.approach-item:hover { border-color: var(--color-accent); }
.approach-num {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-accent-2);
  font-weight: 600;
  margin-bottom: 12px;
}
.approach-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.approach-item p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.9;
}

/* ===== Company ===== */
.section-company { background: var(--color-bg); }
.company-table { max-width: 720px; }
.company-table table {
  width: 100%;
  border-collapse: collapse;
}
.company-table th,
.company-table td {
  padding: 20px 24px;
  font-size: 0.88rem;
  line-height: 1.8;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}
.company-table th {
  width: 160px;
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

/* ===== Contact ===== */
.section-contact { background: var(--color-bg-alt); }
.contact-form { max-width: 640px; }
.form-group { margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group label {
  display: block; font-size: 0.8rem; font-weight: 500;
  margin-bottom: 8px; letter-spacing: 0.05em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 14px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: 0.9rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
}
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%239a9ab5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* ===== Footer ===== */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 40px;
}
.footer-top {
  display: flex; justify-content: space-between;
  align-items: flex-start; margin-bottom: 40px;
}
.footer-logo { margin-bottom: 8px; }
.footer-tagline { font-size: 0.8rem; color: var(--color-text-muted); }
.footer-nav { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-nav a {
  font-family: var(--font-en);
  font-size: 0.72rem; letter-spacing: 0.15em;
  color: var(--color-text-muted); transition: color 0.3s ease;
}
.footer-nav a:hover { color: var(--color-text); }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
}
.footer-bottom p {
  font-size: 0.72rem; color: var(--color-text-muted); letter-spacing: 0.05em;
}

/* ===== Visual Break ===== */
.visual-break {
  position: relative;
  height: 45vh;
  min-height: 300px;
  overflow: hidden;
}
.visual-break-image {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.visual-break-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(17,17,34,0.4), rgba(17,17,34,0.6));
}
.visual-break-content {
  position: relative; z-index: 1;
  height: 100%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center; padding: 0 24px;
}
.visual-break-quote {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}
.visual-break-sub {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.08em;
}

/* ===== Service Card Image ===== */
.service-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.service-card-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s var(--ease);
}
.service-card:hover .service-card-image img {
  transform: scale(1.05);
}

/* ===== Hero Image ===== */
.hero-bg-image {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.3;
}

/* ===== Animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav {
    position: fixed; inset: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center; justify-content: center;
    gap: 28px;
    opacity: 0; visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }
  .nav.open { opacity: 1; visibility: visible; }
  .nav-link { font-size: 1rem; }
  .hamburger { display: block; }

  .section { padding: 80px 0; }
  .section-mission { padding: 100px 0; }

  .services-grid { grid-template-columns: 1fr; }
  .service-card-inner { padding: 32px 24px; }

  .approach-box { padding: 40px 24px; }
  .approach-grid { grid-template-columns: 1fr; gap: 24px; }
  .approach-item { padding: 24px; }

  .company-table th { width: 100px; font-size: 0.82rem; }
  .company-table td { font-size: 0.82rem; }
  .company-table th,
  .company-table td { padding: 14px 12px; }

  .form-row { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 32px; }
  .visual-break-image { background-attachment: scroll; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.4rem; }
  .mission-line { font-size: 1.1rem; }
}