/* ==========================================================================
   DESIGN VARIABLES & SYSTEM CONFIGURATION
   ========================================================================== */
:root {
  /* Color Palette Tokens */
  --color-bg: #fafafa;
  --color-card-bg: #ffffff;
  --color-main: #1a1a1a;
  --color-mute: #4b5563;
  --color-sub-mute: #9ca3af;
  --color-border: #e5e7eb;
  --color-accent: #2563eb;

  /* Layout, Padding & Margin Tracking */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --grid-gap: 20px;
  --border-radius: 12px;
  
  /* Text Sizing System */
  --font-size-base: 16px;
  --font-size-meta: 14px;
}

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

body {
  background-color: var(--color-bg);
  color: var(--color-main);
  font-size: var(--font-size-base);
}

/* Header UI Elements */
/* Header and Global Navigation Framework */
.blog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap; /* Allows auto-wrapping on narrow screens */
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-card-bg);
  border-bottom: 1px solid var(--color-border);
}

.logo {
  font-weight: 700;
  font-size: 20px;
  font-family: ui-sans-serif, system-ui, sans-serif;
}

/* Nav Menu Flex Container */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  /* Appends standard Japanese typography styles natively to the navigation */
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

/* Navigation Interactive Items */
.nav-item {
  color: var(--color-mute);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 6px 4px;
  transition: color 0.2s ease, border-color 0.2s ease;
  border-bottom: 2px solid transparent;
}

/* Hover and Active Visual States */
.nav-item:hover {
  color: var(--color-main);
}

.nav-item.active {
  color: var(--color-accent);
  font-weight: 600;
  border-bottom: 2px solid var(--color-accent);
}

/* Mobile Responsive Adaptation for Navigation Layout */
@media (max-width: 768px) {
  .blog-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-sm);
  }

  .main-nav {
    width: 100%;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap; /* Wraps items into two rows cleanly on tiny phones */
  }

  .nav-item {
    font-size: 14px;
  }
}


.logo {
  font-weight: 700;
  font-size: 20px;
  font-family: ui-sans-serif, system-ui, sans-serif;
}

/* Language Switcher */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background-color: #f4f4f5;
  padding: 4px 12px;
  border-radius: 20px;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--color-mute);
  font-size: var(--font-size-meta);
  font-weight: 600;
  cursor: pointer;
  padding: 4px 8px;
  transition: color 0.2s ease;
}

.lang-btn:hover { color: var(--color-main); }
.lang-btn.active { color: var(--color-accent); }
.lang-divider { color: var(--color-sub-mute); font-size: var(--font-size-meta); user-select: none; }

/* Main Wrapper & Layout Framework */
.content-wrapper {
  max-width: 1200px;
  margin: var(--spacing-lg) auto;
  padding: 0 var(--spacing-sm);
}

/* Structural Layout Groups */
.lang-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg); /* Tracks vertical spacing separating main layout rows */
}

/* ==========================================================================
   ADVANCED COMPRESSIBLE DYNAMIC GRID OVERVIEW
   ========================================================================== */

/* Layout Row 1: Top 4 Horizontal Items */
.grid-top-four {
  display: grid;
  /* Autoflow: dynamically fits cards, tracks layout up to 4 elements, switches dynamically */
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--grid-gap);
  justify-content: center;
}

/* Layout Row 2: Middle 3 Vertical Items */
.grid-middle-three {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--grid-gap);
  justify-content: center;
}

/* Layout Row 3: Bottom 1 Full-width Item */
.grid-bottom-one {
  display: grid;
  grid-template-columns: 1fr;
}

/* Base Card Object Config */
.grid-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  
  /* Strict Content Isolation Systems */
  overflow: visible;
  word-wrap: break-word;
  min-height: 160px;
}

/* Flex modifier variant to simulate high-fidelity vertical layout profiles */
.vertical-mode {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 280px;
}

/* Horizontal Full modifier width alignment logic */
.horizontal-full {
  min-height: 120px;
  width: 100%;
}

/* Visibility State Rules */
.hidden { display: none !important; }

/* ==========================================================================
   TYPOGRAPHY RULES & TEXT FORMATTING SYSTEM
   ========================================================================== */
.lang-group[lang="en"] {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.65;
  letter-spacing: -0.011em;
}

.lang-group[lang="ja"] {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, "Meiryo", sans-serif;
  line-height: 1.85;
  letter-spacing: 0.04em;
}

/* ==========================================================================
   BADGE LAYOUT SYSTEM
   ========================================================================== */

/* Flex wrapper ensures auto-wrapping and central layout tracking */
.badge-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;                  /* Consistent space between badges */
  justify-content: center;    /* Centers badges on screen */
  margin-top: var(--spacing-md);
  max-width: 900px;           /* Prevents line rows from stretching too wide */
  margin-left: auto;
  margin-right: auto;
}

/* Individual Badge Component */
.tech-badge {
  display: inline-flex;
  align-items: center;
  background-color: #eff6ff;   /* Soft slate blue tint background */
  color: var(--color-accent); /* Tech Blue color (#2563eb) */
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid #dbeafe;  /* Border that blends with the theme */
  
  /* Text overflow & overlap safety configurations */
  white-space: nowrap;        /* Keeps terms on a single line */
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;            /* Protects layout integrity on small devices */
  
  transition: all 0.2s ease-in-out;
  cursor: default;
}

/* Smooth Interactive State */
.tech-badge:hover {
  background-color: var(--color-accent);
  color: var(--color-card-bg);
  border-color: var(--color-accent);
  transform: translateY(-1px); /* Slight elevate effect */
}


/* Responsive Scaling for Mobile Screens */
@media (max-width: 600px) {
  .tech-badge {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 4px;
  }
  .badge-container {
    gap: 8px;
  }
}

.hero-title {
  color: var(--color-main);
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.02em;
  margin-bottom: var(--spacing-sm);
  
  /* Enforces perfect horizontal centering across all viewports */
  text-align: center;
  display: block;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  
  /* Absolute safety bounds against extreme word layout breakouts */
  word-break: keep-all; 
  overflow-wrap: break-word;
}

/* Responsive Adaptive Corrections */
@media (max-width: 768px) {
  .blog-header { padding: var(--spacing-sm); }
  .content-wrapper { margin: var(--spacing-sm) auto; }
  .lang-group { gap: var(--spacing-md); }
}

/* ==========================================================================
   RICH CARD CONTENT TYPOGRAPHY & LAYOUT UTILS
   ========================================================================== */
.text-rich-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  min-height: auto; /* Dynamic expand tracking base size automatically */
  padding: 20px;
}

.card-main-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-main);
  border-left: 4px solid var(--color-accent);
  padding-left: var(--spacing-xs);
  margin-bottom: 4px;
}

.card-sub-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-accent-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-main);
}

.warning-color {
  color: #d97706; /* Warning amber tint for special operational requests */
}

.card-body-text {
  font-size: 0.875rem;
  color: var(--color-mute);
  line-height: 1.6;
}

.highlight-badge {
  display: inline-block;
  background-color: #f3f4f6;
  color: var(--color-main);
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.8rem;
  margin-right: 4px;
}

.border-top-dash {
  border-top: 1px dashed var(--color-border);
  padding-top: var(--spacing-sm);
  margin-top: 4px;
}

/* Custom tight flexbox mapping specifically for rendering inside grid cards */
.card-badge-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: var(--spacing-xs);
}

/* Adjust card badge spacing and size parameters slightly to look razor sharp inside containers */
.card-badge-grid .tech-badge {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  background-color: #eff6ff;
  color: var(--color-accent);
  border: 1px solid #dbeafe;
}

/* ==========================================================================
   UNIFIED FORM CARD COMPONENT STYLING
   ========================================================================== */
.unified-form-card {
  min-height: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.padding-bottom-none {
  padding-bottom: 0 !important;
  border-bottom: none !important;
}

.form-tab-btn {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-mute);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.form-tab-btn:hover { background-color: #f3f4f6; color: var(--color-main); }
.form-tab-btn.active { background-color: #eff6ff; color: var(--color-accent); border-color: #bfdbfe; }

.form-display-pane {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.custom-hub-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-main);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="url"],
.form-group textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 13px;
  color: var(--color-main);
  background-color: var(--color-bg);
  font-family: inherit;
}

.form-group textarea {
  min-height: 80px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: #ffffff;
}

.radio-flex-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  padding: 4px 0;
}

.radio-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500 !important;
  color: var(--color-mute);
  cursor: pointer;
}

.form-validation-alert {
  background-color: #fef2f2;
  border: 1px solid #fee2e2;
  color: #dc2626;
  font-size: 12px;
  font-weight: 600;
  padding: 8px var(--spacing-sm);
  border-radius: 6px;
}

.form-action-row {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-xs);
}

.form-submit-btn {
  background-color: var(--color-accent);
  border: 1px solid var(--color-accent);
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  padding: 8px var(--spacing-md);
  border-radius: 6px;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.form-submit-btn:hover { opacity: 0.9; }

/* Review Panel Outputs styling definitions */
.review-title { font-size: 14px; font-weight: 700; border-bottom: 1px solid var(--color-border); padding-bottom: 4px; margin-bottom: var(--spacing-xs); }
.review-data-wrapper { display: flex; flex-direction: column; gap: 8px; background-color: var(--color-bg); padding: var(--spacing-sm); border-radius: 6px; border: 1px solid var(--color-border); }
.review-row { font-size: 13px; line-height: 1.5; color: var(--color-main); }
.review-row strong { color: var(--color-mute); display: inline-block; width: 120px; font-size: 11px; text-transform: uppercase; }
.margin-top-md { margin-top: var(--spacing-sm); }



/* ==========================================================================
   GLOBAL CORPORATE FOOTER STYLING
   ========================================================================== */
.blog-footer-global {
  background-color: #ffffff;
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  width: 100%;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

.footer-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: 2fr 1.5fr 1.5fr;
  gap: var(--spacing-lg);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-logo {
  font-weight: 700;
  font-size: 16px;
  color: var(--color-main);
}

.footer-desc {
  font-size: 13px;
  color: var(--color-mute);
  line-height: 1.6;
}

.footer-section-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-main);
  padding-bottom: 4px;
  border-bottom: 2px solid var(--color-border);
}

.footer-legal-text {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-mute);
}

.footer-permit-number {
  font-size: 13px;
  color: var(--color-main);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-link {
  font-size: 13px;
  color: var(--color-mute);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Bottom Attributions Band */
.footer-bottom {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md) 0;
}

.footer-bottom-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.copyright-notice {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-mute);
}

.footer-sub-text {
  font-size: 11px;
  color: var(--color-sub-mute);
}

/* ==========================================================================
   FOOTER RESPONSIVE OVERRIDES
   ========================================================================== */
@media (max-width: 900px) {
  .footer-wrapper {
    grid-template-columns: 1fr; /* Stack columns on tablets and mobile */
    gap: var(--spacing-md);
  }
  
  .footer-section-title {
    padding-bottom: 6px;
  }
}

@media (max-width: 600px) {
  .footer-bottom-wrapper {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}


/* ==========================================================================
   PARSED TERMINAL MARKDOWN TYPOGRAPHY TUNING
   ========================================================================== */
.markdown-body h1 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-terminal-accent);
  margin-bottom: var(--spacing-sm);
  border-bottom: 1px solid #334155;
  padding-bottom: 4px;
}

.markdown-body h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-terminal-text);
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

.markdown-body p {
  font-size: 13px;
  color: #94a3b8;
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

/* High-contrast block styling for raw code arrays inside terminal */
.markdown-body pre {
  background-color: #020617;
  border: 1px solid #1e293b;
  padding: var(--spacing-sm);
  border-radius: 6px;
  overflow-x: auto;
  margin: var(--spacing-sm) 0;
}

.markdown-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  color: #38bdf8; /* Soft blue text formatting for programmatic lines */
}

.markdown-body ul {
  padding-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.markdown-body li {
  font-size: 13px;
  color: #94a3b8;
  margin-bottom: 4px;
}

/* ==========================================================================
   TABS CONTAINER — 3 PER ROW, GROWS DOWNWARD
   ========================================================================== */
.tabs-container {
  display: grid !important;
  grid-template-columns: repeat(3, 1fr) !important;
  grid-auto-rows: auto !important;
  gap: 8px;
  width: 100%;
}

.tab-button {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-mute);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 12px;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tab-button:hover {
  background-color: #f3f4f6;
  color: var(--color-main);
}

.tab-button.active {
  background-color: #eff6ff;
  color: var(--color-accent);
  border-color: #bfdbfe;
}

@media (max-width: 600px) {
  .tabs-container {
    grid-template-columns: repeat(2, 1fr);
  }
}