/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0b0f1a;
  --bg2:       #111827;
  --surface:   #1a2235;
  --accent:    #4f9cf9;
  --accent2:   #a78bfa;
  --gold:      #f5c842;
  --text:      #e2e8f0;
  --text-muted:#94a3b8;
  --border:    rgba(255,255,255,0.08);
  --radius:    12px;
  --transition: 0.3s ease;
}

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

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

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

/* ===== ANIMATIONS ===== */
.fade-in { opacity: 0; transform: translateY(24px); animation: fadeUp 0.8s forwards; }
.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal { opacity: 0; transform: translateY(32px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== NAV ===== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: rgba(11, 15, 26, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
}
.nav-logo img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 32px;
  align-items: center;
}
.nav-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }

.btn-nav {
  background: var(--accent);
  color: #fff !important;
  padding: 8px 20px;
  border-radius: 6px;
  font-weight: 600;
  transition: opacity var(--transition) !important;
}
.btn-nav:hover { opacity: 0.85; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-menu {
  display: none;
  list-style: none;
  background: rgba(11,15,26,0.97);
  padding: 16px 24px 24px;
  flex-direction: column;
  gap: 16px;
  border-top: 1px solid var(--border);
}
.mobile-menu.open { display: flex; }
.mobile-menu a { font-size: 1rem; color: var(--text-muted); }
.mobile-menu a:hover { color: var(--text); }

/* ===== HERO ===== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 20%, rgba(79,156,249,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(167,139,250,0.10) 0%, transparent 50%),
    var(--bg);
}

.hero-bg-logo {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 0;
}
.hero-bg-logo img {
  width: min(80vw, 800px);
  opacity: 0.25;
  filter: none;
  user-select: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 0 24px;
}

.hero-sub {
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.hero-name {
  font-size: clamp(4rem, 12vw, 9rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-name-en {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: var(--text-muted);
  margin-top: 4px;
  margin-bottom: 24px;
  letter-spacing: 0.08em;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.8;
}
.hero-tagline span {
  font-size: 0.9em;
  color: var(--text-muted);
  opacity: 0.7;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: opacity var(--transition), transform var(--transition);
  display: inline-block;
}
.btn-primary:hover { opacity: 0.85; transform: translateY(-2px); }

.btn-outline {
  border: 1.5px solid var(--border);
  color: var(--text);
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: border-color var(--transition), transform var(--transition);
  display: inline-block;
}
.btn-outline:hover { border-color: var(--accent); transform: translateY(-2px); }

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
}
.hero-scroll span {
  display: block;
  width: 2px;
  height: 48px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  margin: 0 auto;
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%   { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50%  { opacity: 1; }
  100% { opacity: 0; transform: scaleY(1); transform-origin: top; }
}

/* ===== SECTION BASE ===== */
.section { padding: 100px 0; }
.section-dark { background: var(--bg2); }

.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 4px;
}

.section-title-en {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 56px;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.about-text strong { color: var(--text); }

.about-en {
  margin-top: 24px !important;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.875rem !important;
  font-style: italic;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 8px;
}

.tag {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.825rem;
  color: var(--text-muted);
  transition: border-color var(--transition), color var(--transition);
}
.tag:hover { border-color: var(--accent); color: var(--text); }

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color var(--transition), transform var(--transition);
}
.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.service-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.service-en {
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.service-card p:last-child {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== RESULTS ===== */
.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
  transition: transform var(--transition);
}
.result-card:hover { transform: translateY(-4px); }
.result-card.highlight {
  border-color: var(--gold);
  background: linear-gradient(135deg, var(--surface) 0%, rgba(245,200,66,0.06) 100%);
}

.result-num {
  font-size: clamp(3.5rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.result-card.highlight .result-num {
  background: linear-gradient(135deg, var(--gold) 0%, #f97316 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.result-num span { font-size: 0.6em; }

.result-label {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 8px;
}

.result-label-en {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== WORKS ===== */
.works-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.work-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  gap: 28px;
  align-items: flex-start;
  transition: border-color var(--transition), transform var(--transition);
}
.work-item:hover {
  border-color: var(--accent2);
  transform: translateX(4px);
}

.work-tag {
  background: rgba(167,139,250,0.15);
  color: var(--accent2);
  border: 1px solid rgba(167,139,250,0.3);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
  min-width: 72px;
  text-align: center;
  margin-top: 4px;
}

.work-body h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.work-body p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 8px;
}

.work-en {
  font-size: 0.8rem !important;
  font-style: italic;
  color: #64748b !important;
}

/* ===== CONTACT ===== */
.contact-container { max-width: 680px; }

.contact-intro {
  color: var(--text-muted);
  margin-bottom: 48px;
  font-size: 0.95rem;
}
.contact-intro span {
  display: block;
  font-size: 0.85rem;
  margin-top: 4px;
  opacity: 0.7;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.825rem;
  color: var(--text-muted);
  font-weight: 500;
}
.form-group label span { color: var(--accent); }

.form-group input,
.form-group textarea {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: #475569; }

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

.btn-submit {
  align-self: flex-start;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.contact-note {
  margin-top: 36px;
  font-size: 1.15rem;
  line-height: 2;
  color: #dbeafe;
}

.contact-note a {
  font-size: 1.25rem;
  font-weight: 700;
  color: #60a5fa;
  text-decoration: none;
}

.contact-highlight {
  display: inline-block;
  margin: 10px 0;
  padding: 10px 14px;
  border: 1px solid rgba(96, 165, 250, 0.45);
  border-radius: 10px;
  background: rgba(96, 165, 250, 0.08);
  color: #ffffff;
  font-weight: 700;
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-name {
  font-size: 0.9rem;
  font-weight: 600;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }

  .section { padding: 72px 0; }

  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .services-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: 1fr; }

  .work-item { flex-direction: column; gap: 16px; }

  .form-row { grid-template-columns: 1fr; }

  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}