/* CSS Document for 株式会社９ Homepage Redesign (Version 2 - Bright Theme) */

/* Variables */
:root {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-section-alt: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.75);
  --border-color: rgba(15, 23, 42, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  --accent-cyan: #0284c7;
  --accent-violet: #4f46e5;
  --accent-magenta: #c084fc;
  
  --gradient-accent: linear-gradient(135deg, #0ea5e9 0%, #6366f1 50%, #ec4899 100%);
  --gradient-light: linear-gradient(180deg, rgba(248, 250, 252, 0.8) 0%, rgba(248, 250, 252, 1) 100%);
  --glass-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.06), 0 4px 12px -2px rgba(15, 23, 42, 0.03);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --font-sans: 'Outfit', 'Noto Sans JP', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
}

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

/* Page Loader */
#loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-primary);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s ease;
}

#loader.fade-out {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(14, 165, 233, 0.15);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: spin 1s infinite linear;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Header */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-smooth);
  border-bottom: 1px solid transparent;
}

#site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 5px 0;
  box-shadow: 0 4px 20px -5px rgba(0, 0, 0, 0.05);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  display: flex;
  align-items: center;
  font-weight: 800;
  font-size: 24px;
}

.logo-num {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 38px;
  height: 38px;
  background: var(--gradient-accent);
  color: #ffffff;
  border-radius: 10px;
  margin-right: 10px;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 24px;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
}

.logo-text {
  font-weight: 600;
  letter-spacing: -0.5px;
  background: linear-gradient(to right, #0f172a, #334155);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

#main-nav ul {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 30px;
}

#main-nav a {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

#main-nav a:hover {
  color: var(--accent-cyan);
}

.btn-store {
  background: var(--gradient-accent);
  color: #ffffff !important;
  padding: 8px 20px;
  border-radius: 8px;
  font-weight: 800 !important;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
}

.btn-store:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 25px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.mobile-menu-btn span {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-smooth);
}

/* Hero Section */
.hero-section {
  position: relative;
  height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  transform: scale(1.05);
}

.slide.active {
  opacity: 0.85; /* Keep it high but soft underneath the bright overlay */
  transform: scale(1);
  animation: zoomSlow 12s infinite alternate ease-in-out;
  filter: brightness(1.1) contrast(0.95);
}

@keyframes zoomSlow {
  0% { transform: scale(1); }
  100% { transform: scale(1.06); }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  /* Bright, soft glassmorphism gradient wash over the background images */
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 20%, rgba(248, 250, 252, 0.75) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  width: 100%;
  z-index: 3;
}

.content-inner {
  max-width: 750px;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1.5px;
  color: var(--text-primary);
}

.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 20px;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #ffffff;
  padding: 14px 30px;
  border-radius: 8px;
  font-weight: 800;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  border: 1px solid rgba(15, 23, 42, 0.1);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 14px 30px;
  border-radius: 8px;
  font-weight: 600;
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.9);
  border-color: var(--text-muted);
}

/* Sections General */
.section-padding {
  padding: 100px 0;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-header {
  margin-bottom: 60px;
}

.section-header.text-center {
  text-align: center;
}

.section-tag {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--accent-cyan);
  display: inline-block;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 15px;
  color: var(--text-primary);
}

.section-lead {
  font-size: 16px;
  color: var(--text-secondary);
}

/* Business Grid */
.grid-business {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.business-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  transition: var(--transition-smooth);
}

.business-card:hover {
  transform: translateY(-8px);
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: 0 20px 40px -15px rgba(99, 102, 241, 0.12);
}

.card-image {
  height: 250px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, var(--bg-secondary) 0%, transparent 100%);
}

.card-body {
  padding: 30px;
}

.card-body h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 15px;
}

.card-body p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 25px;
  line-height: 1.7;
}

.card-link {
  font-weight: 600;
  color: var(--accent-cyan);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

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

.arrow {
  transition: transform 0.3s ease;
}

/* Features Platform */
.features-section {
  background-color: var(--bg-secondary);
}

.grid-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 40px 30px;
  box-shadow: var(--glass-shadow);
  transition: var(--transition-smooth);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(99, 102, 241, 0.15);
  box-shadow: 0 15px 30px -10px rgba(99, 102, 241, 0.08);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: rgba(14, 165, 233, 0.06);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--accent-cyan);
  margin-bottom: 25px;
}

.feature-icon svg {
  width: 30px;
  height: 30px;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 15px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}

/* Company Section Overview */
.overview-grid {
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: 60px;
  align-items: center;
}

.overview-info .section-title {
  margin-bottom: 20px;
}

.overview-info p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

.overview-table-wrap {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 30px;
  box-shadow: var(--glass-shadow);
}

.overview-table {
  width: 100%;
  border-collapse: collapse;
}

.overview-table tr {
  border-bottom: 1px solid var(--border-color);
}

.overview-table tr:last-child {
  border-bottom: none;
}

.overview-table th, .overview-table td {
  padding: 20px 10px;
  text-align: left;
  font-size: 14px;
}

.overview-table th {
  width: 30%;
  color: var(--text-secondary);
  font-weight: 700;
}

.overview-table td {
  color: var(--text-primary);
}

/* Specified Commercial Transactions */
.tokutei-section {
  background-color: var(--bg-section-alt);
}

.tokutei-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 40px;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: var(--glass-shadow);
}

/* Contact Form Section */
.contact-section {
  background-color: var(--bg-secondary);
}

.contact-card {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 50px;
  box-shadow: var(--glass-shadow);
}

.glass-form {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
}

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

.form-group.full-width {
  grid-column: span 2;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.required {
  color: #ff4d4d;
  font-size: 11px;
  margin-left: 5px;
}

.form-group input, .form-group textarea {
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 12px 16px;
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  transition: var(--transition-smooth);
}

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

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent-violet);
  background: #ffffff;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.1);
}

.btn-submit {
  border: none;
  cursor: pointer;
  padding: 14px 60px;
  font-size: 16px;
  width: auto;
  display: inline-block;
}

/* Footer (Contrast Dark Slate style for premium looks) */
#site-footer {
  background-color: #0f172a;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 80px 0 30px;
  color: #f8fafc;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 5fr 3fr 4fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-brand .logo-text {
  background: linear-gradient(to right, #ffffff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-desc {
  color: #94a3b8;
  font-size: 14px;
}

.footer-contact {
  color: #64748b;
  font-size: 13px;
  line-height: 1.8;
}

.footer-links h4 {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 25px;
  letter-spacing: 0.5px;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 13px;
  color: #94a3b8;
}

.footer-links a:hover {
  color: var(--accent-cyan);
  padding-left: 5px;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
  font-size: 12px;
  color: #64748b;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Responsive Styles */
@media screen and (max-width: 1024px) {
  .hero-title {
    font-size: 44px;
  }
  
  .grid-business {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .grid-features {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .overview-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media screen and (max-width: 768px) {
  .section-padding {
    padding: 60px 0;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .hero-subtitle {
    font-size: 15px;
  }
  
  #main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 250px;
    height: 100vh;
    background-color: var(--bg-secondary);
    z-index: 999;
    padding: 100px 30px;
    transition: var(--transition-smooth);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
  }
  
  #main-nav.active {
    right: 0;
  }
  
  #main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 25px;
  }
  
  .mobile-menu-btn {
    display: flex;
    z-index: 1000;
  }
  
  .mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
  
  .grid-features {
    grid-template-columns: 1fr;
  }
  
  .overview-table th {
    width: 40%;
  }
  
  .contact-card {
    padding: 30px 20px;
  }
  
  .form-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  
  .form-group.full-width {
    grid-column: span 1;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}