/* ============================================
   Japan Code Works — Main Stylesheet
   ============================================ */

:root {
  --bg: #0a0a0a;
  --bg-card: #111111;
  --bg-card-hover: #161616;
  --text: #ffffff;
  --text-secondary: #888888;
  --text-muted: #555555;
  --accent: #4f46e5;
  --accent-light: #818cf8;
  --accent-glow: rgba(79, 70, 229, 0.3);
  --gradient-1: linear-gradient(135deg, #4f46e5, #7c3aed);
  --gradient-2: linear-gradient(135deg, #06b6d4, #3b82f6);
  --gradient-3: linear-gradient(135deg, #f59e0b, #ef4444);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 16px;
  --radius-sm: 8px;
  --font: 'Inter', 'Noto Sans JP', 'Noto Sans SC', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   Navigation
   ============================================ */

.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: var(--transition);
  backdrop-filter: blur(0px);
}

.top-nav.scrolled {
  padding: 12px 0;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  letter-spacing: 0.02em;
}

.nav-links a:hover {
  color: var(--text);
}

.lang-switcher {
  display: flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 3px;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.lang-btn:hover {
  color: var(--text-secondary);
}

.lang-btn.active {
  background: var(--accent);
  color: white;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(20px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.mobile-menu.open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
}

.mobile-lang {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

/* ============================================
   Hero
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.floating-shapes {
  position: absolute;
  inset: 0;
}

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 20s ease-in-out infinite;
}

.shape-1 {
  width: 400px;
  height: 400px;
  background: var(--accent);
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 300px;
  height: 300px;
  background: #7c3aed;
  top: 50%;
  right: 15%;
  animation-delay: -5s;
}

.shape-3 {
  width: 250px;
  height: 250px;
  background: #06b6d4;
  bottom: 20%;
  left: 30%;
  animation-delay: -10s;
}

.shape-4 {
  width: 200px;
  height: 200px;
  background: #f59e0b;
  top: 30%;
  right: 30%;
  animation-delay: -15s;
  opacity: 0.2;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -40px) scale(1.1); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(40px, 30px) scale(1.05); }
}

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

.hero-tag {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-light);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s forwards;
}

.hero-title {
  font-size: clamp(3.5rem, 10vw, 8rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
}

.hero-title .line-1 {
  display: block;
  opacity: 0;
  animation: fadeUp 0.8s 0.4s forwards;
}

.hero-title .line-2 {
  display: block;
  opacity: 0;
  animation: fadeUp 0.8s 0.6s forwards;
}

.hero-title .dot {
  color: var(--accent-light);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 40px;
  font-weight: 400;
  opacity: 0;
  animation: fadeUp 0.8s 0.8s forwards;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--gradient-1);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  color: white;
  transition: var(--transition);
  opacity: 0;
  animation: fadeUp 0.8s 1s forwards;
  box-shadow: 0 4px 30px var(--accent-glow);
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px var(--accent-glow);
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--accent-light), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.5); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Sections Common
   ============================================ */

.section-tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent-light);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 60px;
}

/* ============================================
   Services
   ============================================ */

.services {
  padding: 120px 0;
}

.service-card {
  display: grid;
  grid-template-columns: 60px 1fr 300px;
  gap: 32px;
  align-items: start;
  padding: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 24px;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(40px);
}

.service-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.1);
}

.service-number {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-muted);
  padding-top: 4px;
}

.service-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.service-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.service-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-light);
  padding: 8px 16px;
  border: 1px solid rgba(129, 140, 248, 0.3);
  border-radius: 50px;
  transition: var(--transition);
}

.service-link:hover {
  background: rgba(129, 140, 248, 0.1);
  border-color: var(--accent-light);
}

.service-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.feature {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text-secondary);
}

.speed-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  background: var(--gradient-2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.speed-number {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
}

.speed-unit {
  font-size: 1.2rem;
  font-weight: 700;
}

/* Service Visuals */
.service-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}

/* Pet Visual */
.visual-pet {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(239, 68, 68, 0.15));
  border: 1px solid rgba(245, 158, 11, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: petPulse 3s ease-in-out infinite;
}

.paw {
  font-size: 3.5rem;
}

@keyframes petPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Code Visual */
.visual-code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.8rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  width: 100%;
}

.code-line {
  padding: 4px 0;
  color: var(--text-secondary);
}

.code-keyword { color: #c084fc; }
.code-string { color: #34d399; }
.code-func { color: #60a5fa; }
.code-comment { color: var(--text-muted); }

/* AI Visual */
.visual-ai {
  position: relative;
  width: 160px;
  height: 160px;
}

.ai-circle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--gradient-1);
  box-shadow: 0 0 30px var(--accent-glow);
}

.ai-orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(129, 140, 248, 0.15);
  border-radius: 50%;
}

.ai-orbit-1 {
  width: 80px;
  height: 80px;
  margin: -40px 0 0 -40px;
  animation: orbit 6s linear infinite;
}

.ai-orbit-2 {
  width: 120px;
  height: 120px;
  margin: -60px 0 0 -60px;
  animation: orbit 9s linear infinite reverse;
}

.ai-orbit-3 {
  width: 160px;
  height: 160px;
  margin: -80px 0 0 -80px;
  animation: orbit 12s linear infinite;
}

.ai-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-light);
  position: absolute;
  top: -4px;
  left: 50%;
  margin-left: -4px;
}

@keyframes orbit {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ============================================
   About
   ============================================ */

.about {
  padding: 120px 0;
  border-top: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.about-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 40px;
  background: var(--bg-card);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.about-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.about-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.about-value {
  font-size: 1.05rem;
  font-weight: 500;
}

/* ============================================
   Contact
   ============================================ */

.contact {
  padding: 120px 0;
}

.contact-inner {
  text-align: center;
  padding: 80px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.contact-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 300px;
  background: var(--accent);
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  pointer-events: none;
}

.contact-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  position: relative;
}

.contact-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 40px;
  position: relative;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 40px;
  background: white;
  color: var(--bg);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 50px;
  transition: var(--transition);
  position: relative;
}

.contact-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.15);
}

/* Contact Form */
.contact-form {
  text-align: left;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

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

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-light);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

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

.contact-form .contact-btn {
  width: 100%;
  justify-content: center;
  border: none;
  cursor: pointer;
  font-family: var(--font);
}

.form-success {
  text-align: center;
  padding: 40px 0;
  color: #34d399;
  font-weight: 600;
  font-size: 1.1rem;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Footer
   ============================================ */

.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

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

.footer-logo {
  font-weight: 700;
  font-size: 0.9rem;
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--text);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .lang-switcher {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

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

  .service-number {
    font-size: 0.85rem;
  }

  .service-visual {
    display: none;
  }

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

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

@media (max-width: 600px) {
  .hero-title {
    font-size: clamp(2.5rem, 12vw, 4.5rem);
  }

  .section-title {
    font-size: 1.8rem;
  }

  .service-card {
    padding: 24px;
  }

  .contact-inner {
    padding: 48px 24px;
  }
}

/* ============================================
   Scrollbar
   ============================================ */

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}