/* ==========================================================================
   合同会社 Logikuist Corporate Website - Design System & Styles
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-dark: #090d16;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-focus: #38bdf8;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --primary: #2563eb;
  --primary-light: #38bdf8;
  --primary-glow: rgba(56, 189, 248, 0.25);
  --accent: #06b6d4;
  --accent-warm: #f59e0b;
  --accent-green: #10b981;
  --accent-purple: #8b5cf6;
  
  --gradient-hero: linear-gradient(135deg, #38bdf8 0%, #2563eb 50%, #8b5cf6 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.18), transparent 70%);

  /* Typography */
  --font-en: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-jp: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Radii & Shadows */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.2);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-jp);
  -webkit-font-smoothing: antialiased;
}

body {
  line-height: 1.7;
  overflow-x: hidden;
  background-image: var(--gradient-glow);
  background-attachment: fixed;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

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

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.8);
  border-bottom: 1px solid var(--border-glass);
  transition: var(--transition-smooth);
}

.site-header.scrolled {
  padding: 12px 0;
  background: rgba(9, 13, 22, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-badge {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

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

.logo-sub {
  font-size: 0.75rem;
  color: var(--primary-light);
  font-weight: 500;
  margin-left: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
}

.nav-links a:hover {
  color: #ffffff;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-light);
  transition: width 0.3s ease;
  border-radius: 2px;
}

.nav-links a:hover::after {
  width: 100%;
}

.btn-contact-header {
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  color: #ffffff !important;
  padding: 8px 20px !important;
  border-radius: var(--radius-full);
  font-weight: 600 !important;
  font-size: 0.875rem !important;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-contact-header:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.4);
}

.btn-contact-header::after {
  display: none !important;
}

/* Mobile Nav Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-main);
}

/* Hero Section */
.hero-section {
  padding: 160px 0 100px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, rgba(37, 99, 235, 0.08) 50%, transparent 70%);
  filter: blur(60px);
  z-index: -1;
  pointer-events: none;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--primary-light);
  font-weight: 600;
  margin-bottom: 24px;
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.1);
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

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

.hero-lead {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 40px;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #2563eb, #0284c7);
  color: #ffffff;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
  transition: var(--transition-smooth);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(56, 189, 248, 0.45);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 14px 30px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* Trust Bar / Metrics */
.trust-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}

.trust-item {
  text-align: center;
}

.trust-num {
  font-family: var(--font-en);
  font-size: 1.75rem;
  font-weight: 800;
  color: #ffffff;
  background: linear-gradient(135deg, #ffffff, #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.trust-label {
  font-size: 0.825rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Section Common Styling */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary-light);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
}

/* Business Divisions Grid */
.ventures-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 30px;
}

.venture-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.venture-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--primary-light));
  opacity: 0.8;
}

.venture-card:hover {
  transform: translateY(-6px);
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6), var(--shadow-glow);
  background: var(--bg-card-hover);
}

.venture-card.crafts { --card-accent: #f59e0b; }
.venture-card.finance { --card-accent: #38bdf8; }
.venture-card.nodes { --card-accent: #10b981; }

.venture-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
}

.venture-dept {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--card-accent, var(--primary-light));
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.venture-name {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.venture-text {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  flex-grow: 1;
}

.venture-features {
  list-style: none;
  border-top: 1px solid var(--border-glass);
  padding-top: 18px;
  margin-top: auto;
}

.venture-features li {
  font-size: 0.875rem;
  color: var(--text-main);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.venture-features li svg {
  color: var(--card-accent, var(--primary-light));
  flex-shrink: 0;
}

/* Company Overview Table */
.overview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
}

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

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

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

.overview-table th {
  width: 25%;
  padding: 18px 12px;
  text-align: left;
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 600;
  vertical-align: top;
}

.overview-table td {
  padding: 18px 12px;
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.6;
}

.badge-tag {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--primary-light);
  margin-left: 8px;
  font-weight: 600;
}

/* Governance / Values Section */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.value-box {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition-smooth);
}

.value-box:hover {
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-4px);
}

.value-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.value-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-detail-item {
  margin-bottom: 24px;
}

.contact-detail-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-detail-val {
  font-size: 1.05rem;
  font-weight: 600;
}

.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px;
}

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

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-label span.req {
  color: #f43f5e;
  margin-left: 4px;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: #ffffff;
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.25);
}

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

.btn-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
  transition: var(--transition-smooth);
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(56, 189, 248, 0.5);
}

/* Footer */
.site-footer {
  background: #060911;
  border-top: 1px solid var(--border-glass);
  padding: 60px 0 30px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 30px;
  margin-bottom: 40px;
}

.footer-brand p {
  max-width: 320px;
  margin-top: 12px;
  font-size: 0.85rem;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 40px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 8px;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-glass);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .overview-table th {
    width: 35%;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(9, 13, 22, 0.98);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border-glass);
  }
  .nav-links.active {
    display: flex;
  }
  .menu-toggle {
    display: block;
  }
  .hero-section {
    padding: 130px 0 60px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .overview-card {
    padding: 24px 16px;
  }
  .overview-table th, .overview-table td {
    padding: 12px 6px;
    font-size: 0.875rem;
  }
}