/* ==========================================================================
   AI-vision - Premium Corporate Website Styles
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Sans+JP:wght@400;500;700;900&display=swap');

:root {
  /* Color Palette */
  --primary: #0F62FE; /* Deep elegant blue */
  --primary-hover: #0353E9;
  --primary-dark: #001D6C;
  --accent: #00E6FF; /* Vibrant cyan for highlights */
  --accent-glow: rgba(0, 230, 255, 0.4);
  
  --text-main: #1A1F36;
  --text-light: #4F566B;
  --text-muted: #8792A2;
  
  --bg-main: #FFFFFF;
  --bg-sub: #F7FAFC;
  --bg-dark: #0A1128;
  
  --border: #E5E9F2;
  --success: #16A34A;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.02);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.05);
  --shadow-lg: 0 12px 24px rgba(0,18,46,0.08);
  --shadow-primary: 0 8px 20px rgba(15, 98, 254, 0.25);
  
  /* Utilities */
  --radius: 12px;
  --radius-lg: 24px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.bg-sub {
  background-color: var(--bg-sub);
}

.bg-dark {
  background-color: var(--bg-dark);
  color: #fff;
}

/* Utils */
.pc-only {
  display: block;
}
.sp-only {
  display: none;
}

.bg-dark {
  background-color: var(--bg-dark);
  color: #fff;
}

/* Typography */
.text-center { text-align: center; }

.section-subtitle {
  display: inline-block;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 12px;
  background: rgba(15, 98, 254, 0.1);
  padding: 6px 16px;
  border-radius: 50px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.3;
}

.section-title.light {
  color: #FFF;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto 50px auto;
}

/* Buttons */
.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #00D4FF);
  color: #FFFFFF;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(15, 98, 254, 0.35);
  color: #fff;
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: 0.5s;
}

.btn-primary:hover::after {
  left: 100%;
}

.btn-outline {
  background: #FFF;
  color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary) inset;
}

.btn-outline:hover {
  background: var(--bg-sub);
  transform: translateY(-3px);
}

/* Header */
header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-size: 1.7rem;
  font-weight: 900;
  color: var(--primary-dark);
  letter-spacing: -0.02em;
}

.logo span {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

nav ul {
  display: flex;
  gap: 32px;
  align-items: center;
}

nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
}

nav a:hover {
  color: var(--primary);
}

.header-cta .btn {
  padding: 10px 24px;
  font-size: 0.9rem;
}

/* Hamburger Menu */
.hamburger-menu {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 1001;
}

.hamburger-menu span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-dark);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger-menu span:nth-of-type(1) { top: 0; }
.hamburger-menu span:nth-of-type(2) { top: 11px; }
.hamburger-menu span:nth-of-type(3) { bottom: 0; }

.hamburger-menu.active span:nth-of-type(1) {
  transform: translateY(11px) rotate(45deg);
}
.hamburger-menu.active span:nth-of-type(2) {
  opacity: 0;
}
.hamburger-menu.active span:nth-of-type(3) {
  transform: translateY(-11px) rotate(-45deg);
}

/* Hero Section */
.hero {
  padding: 180px 0 100px;
  background: var(--bg-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -10%; width: 60%; height: 200%;
  background: radial-gradient(circle, rgba(15, 98, 254, 0.15) 0%, transparent 70%);
  transform: rotate(-15deg);
  pointer-events: none;
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  position: relative;
  z-index: 2;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

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

.hero-desc {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 40px;
}

.hero-image {
  flex: 1;
  position: relative;
}

.hero-image img {
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  position: relative;
  z-index: 2;
}

.micro-copy {
  display: block;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin-top: 12px;
  font-weight: 500;
}

/* Service Cards */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}

.service-card {
  background: #FFF;
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(15, 98, 254, 0.3);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: rgba(15, 98, 254, 0.1);
  color: var(--primary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 24px;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: var(--primary);
  color: #fff;
}

.service-card h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--primary-dark);
}

.service-card p {
  color: var(--text-light);
  margin-bottom: 24px;
  flex-grow: 1;
}

.service-card img {
  margin-top: 24px;
  width: 100%;
  height: 160px;
  min-height: 160px;
  max-height: 160px;
  flex-shrink: 0;
  object-fit: cover;
  border-radius: 8px;
}

.service-link {
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.95rem;
}

.service-link i {
  margin-left: 8px;
  transition: var(--transition);
}

.service-card:hover .service-link i {
  transform: translateX(5px);
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  position: relative;
  z-index: 2;
}

.stat-item {
  text-align: center;
  padding: 40px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.stat-num {
  font-size: 3.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, #fff, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
  line-height: 1;
}

.stat-num span {
  font-size: 1.5rem;
}

.stat-text {
  font-weight: 600;
  color: rgba(255,255,255,0.8);
}

/* Flow/Steps */
.steps-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.step-box {
  background: #FFF;
  border-radius: var(--radius);
  padding: 32px 40px;
  box-shadow: var(--shadow-md);
  text-align: left;
}

.step-num {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--primary);
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  position: relative;
}

.step-num::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background-color: var(--primary);
  border-radius: 2px;
}

.step-content h4 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  color: var(--text-main);
}

.step-content p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* Reasons Box (Vertical Layout) */
.reason-box {
  background: #FFF;
  border-radius: var(--radius);
  padding: 32px 40px;
  box-shadow: var(--shadow-md);
  text-align: left;
}

.reason-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  position: relative;
}

.reason-num::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background-color: var(--primary);
  border-radius: 2px;
}



/* Troubleshooting Box */
.trouble-box {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 750px;
  margin: 40px auto;
  background: var(--bg-sub);
  padding: 50px;
  border-radius: var(--radius-lg);
  text-align: left;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.trouble-list li {
  margin-bottom: 24px;
  display: flex;
  align-items: flex-start;
}

.trouble-list li:last-child {
  margin-bottom: 0;
}

.trouble-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 28px;
  height: 28px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-weight: bold;
  margin-right: 16px;
  flex-shrink: 0;
}

.trouble-text {
  font-size: 1.15rem;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  text-align: center;
  padding: 100px 20px;
  border-radius: var(--radius-lg);
  margin: 100px auto;
  max-width: 1200px;
  box-shadow: var(--shadow-lg);
}

.cta-section h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 24px;
}

.cta-section p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 40px;
}

.cta-section .btn-group {
  justify-content: center;
}

/* Footer */
footer {
  background: var(--bg-dark);
  color: #fff;
  padding: 80px 0 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 60px;
}

.footer-logo {
  font-size: 1.8rem;
  font-weight: 900;
  margin-bottom: 20px;
}

.footer-logo span { color: var(--accent); }

.footer-desc {
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: #fff;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col a {
  color: rgba(255,255,255,0.6);
}

.footer-col a:hover {
  color: var(--accent);
}

.copyright {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.4);
  font-size: 0.9rem;
}

/* Utilities & Animations */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
  .hero .container { flex-direction: column; text-align: center; }
  .hero-title { font-size: 2.5rem; }
  .hero-content { margin-bottom: 40px; }
  .btn-group { justify-content: center; }
  .services-grid, .stats-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .pc-only { display: none !important; }
  .sp-only { display: block !important; }
  .trouble-box { padding: 24px; margin: 30px auto; }
  .trouble-text { font-size: 1rem; }
  .trouble-list li { margin-bottom: 16px; }
  .reason-box { padding: 24px; }
  .hamburger-menu { display: block; }
  .header-inner nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
  }
  .header-inner nav.active {
    opacity: 1;
    visibility: visible;
  }
  .header-inner nav ul {
    flex-direction: column;
    text-align: center;
    gap: 30px;
  }
  .header-inner nav a {
    font-size: 1.2rem;
  }
  .header-inner nav .btn {
    margin-top: 10px;
  }
  .section { padding: 60px 0; }
  .section-title { font-size: 1.55rem; line-height: 1.4; }
  .cta-section { margin: 60px 20px; padding: 60px 20px; }
  .cta-section h2 { font-size: 1.8rem; }
}