/**
 * components.css - UI Components
 *
 * Neon glow effects on headings and CTAs.
 * Subtle gradient backgrounds.
 * Hover states with glow transitions.
 * Visual polish for NEON-SOUL brand.
 */

/* ==========================================================================
   NEON HEADINGS
   ========================================================================== */

.hero-heading {
  color: var(--color-primary);
  text-shadow: var(--text-glow-primary);
}

.hero-quote [lang="ja"] {
  color: var(--color-secondary);
  text-shadow: var(--text-glow-secondary);
}

/* Section headings with subtle glow on hover */
.section h2 {
  transition: text-shadow var(--transition-base);
}

.section h2:hover {
  text-shadow: var(--text-glow-secondary);
}

/* ==========================================================================
   GRADIENT BACKGROUNDS
   ========================================================================== */

/* Hero gradient - subtle radial from center */
.hero {
  background:
    radial-gradient(
      ellipse 80% 50% at 50% 30%,
      rgba(139, 92, 246, 0.08) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse 60% 40% at 50% 70%,
      rgba(0, 240, 255, 0.05) 0%,
      transparent 50%
    ),
    var(--color-bg);
}

/* Alt section gradient */
.section-alt {
  background:
    linear-gradient(
      180deg,
      var(--color-bg-elevated) 0%,
      rgba(139, 92, 246, 0.03) 50%,
      var(--color-bg-elevated) 100%
    );
}

/* ==========================================================================
   ENHANCED BUTTONS
   ========================================================================== */

.btn-primary {
  position: relative;
  overflow: hidden;
}

/* Glow pulse on hover */
.btn-primary::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: var(--color-primary);
  opacity: 0;
  filter: blur(8px);
  transition: opacity var(--transition-base);
  z-index: -1;
}

.btn-primary:hover::before,
.btn-primary:focus::before {
  opacity: 0.4;
}

/* Secondary button glow on hover */
.btn-secondary:hover,
.btn-secondary:focus {
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
}

/* Large button enhanced */
.btn-lg {
  position: relative;
}

.btn-lg.btn-primary::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 4px;
  background: var(--color-primary);
  filter: blur(6px);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn-lg.btn-primary:hover::after {
  opacity: 0.6;
}

/* ==========================================================================
   LOGO GLOW
   ========================================================================== */

.logo-text {
  transition: text-shadow var(--transition-base);
}

.logo:hover .logo-text,
.logo:focus .logo-text {
  text-shadow:
    0 0 10px var(--color-primary-glow),
    0 0 20px var(--color-primary-glow),
    0 0 30px var(--color-primary-glow);
}

/* ==========================================================================
   JOURNEY NARRATIVE (emoji sequence)
   ========================================================================== */

.journey-emoji {
  transition: transform var(--transition-fast);
}

.journey-narrative:hover .journey-emoji {
  transform: scale(1.1);
}

/* ==========================================================================
   PATTERN FORMULA
   ========================================================================== */

.pattern-formula {
  padding: var(--space-1) var(--space-3);
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--border-radius);
  border: 1px solid rgba(139, 92, 246, 0.2);
  transition: all var(--transition-fast);
}

.pattern-formula:hover {
  background: rgba(139, 92, 246, 0.15);
  border-color: rgba(139, 92, 246, 0.4);
  box-shadow: 0 0 8px rgba(139, 92, 246, 0.2);
}

/* ==========================================================================
   DIAGRAM ENHANCEMENT
   ========================================================================== */

.architecture-diagram {
  transition: filter var(--transition-base);
}

.diagram-container:hover .architecture-diagram {
  filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.3));
}

/* ==========================================================================
   FOOTER SIGNATURE GLOW
   ========================================================================== */

.signature-equation {
  text-shadow: 0 0 20px rgba(255, 107, 107, 0.3);
  transition: text-shadow var(--transition-base);
}

.signature-equation:hover {
  text-shadow:
    0 0 20px rgba(255, 107, 107, 0.5),
    0 0 40px rgba(255, 107, 107, 0.3);
}

.signature-team {
  opacity: 0.9;
  transition: opacity var(--transition-fast);
}

.signature-team:hover {
  opacity: 1;
}

/* ==========================================================================
   CONTACT EMAIL GLOW
   ========================================================================== */

.contact-email {
  position: relative;
  transition: all var(--transition-fast);
}

.contact-email:hover {
  text-shadow: var(--text-glow-primary);
}

/* ==========================================================================
   VISUAL BREATH BEFORE FOOTER
   ========================================================================== */

/* Creates visual separation between Start section and Footer */
/* Allows visitors to "arrive" at the signature */
.site-footer {
  margin-top: var(--space-16);
  padding-top: var(--space-16);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(200px, 60%);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-secondary) 50%,
    transparent 100%
  );
  opacity: 0.3;
}

/* ==========================================================================
   FOCUS STATES (Accessibility)
   ========================================================================== */

/* Enhanced focus rings with glow */
.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: 0 0 12px var(--color-primary-glow);
}

.nav-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ==========================================================================
   EMAIL OBFUSCATION
   Splits email into parts to deter basic scrapers
   ========================================================================== */

.contact-email .email-at {
  /* Visually hidden but present in DOM for scraper confusion */
  font-size: 0.9em;
}

.contact-email .email-part,
.contact-email .email-domain {
  /* Parts are separate spans */
}

/* ==========================================================================
   ACTIVE NAVIGATION STATE
   ========================================================================== */

.nav-link[aria-current="page"] {
  color: var(--color-primary);
  position: relative;
}

.nav-link[aria-current="page"]::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

/* ==========================================================================
   PIPELINE VISUALIZATION (Skills page)
   ========================================================================== */

.pipeline-visualization {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-8) 0;
}

.pipeline-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  min-width: 120px;
  transition: all var(--transition-fast);
}

.pipeline-stage:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(139, 92, 246, 0.2);
}

.stage-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: var(--color-bg);
  border-radius: 50%;
  font-weight: 700;
  font-size: var(--text-sm);
}

.stage-name {
  font-weight: 600;
  color: var(--color-text);
}

.stage-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
}

.stage-icon {
  font-size: var(--text-2xl);
  line-height: 1;
}

.pipeline-arrow {
  color: var(--color-text-muted);
  font-size: var(--text-xl);
}

/* Compact vertical pipeline variant (creative page) */
.pipeline-vertical {
  flex-direction: column;
  gap: var(--space-2);
  max-width: 320px;
  margin: 0 auto;
}

.pipeline-vertical .pipeline-stage {
  flex-direction: row;
  min-width: unset;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  gap: var(--space-3);
}

.pipeline-vertical .stage-desc {
  text-align: left;
}

.pipeline-vertical .pipeline-arrow {
  font-size: var(--text-base);
}

@media (max-width: 768px) {
  .pipeline-visualization {
    flex-direction: column;
  }

  .pipeline-arrow {
    transform: rotate(90deg);
  }
}

/* ==========================================================================
   SKILL CARDS (Skills page)
   ========================================================================== */

.skill-group {
  margin-bottom: var(--space-8);
}

.skill-group-title {
  font-size: var(--text-lg);
  color: var(--color-secondary);
  margin-bottom: var(--space-4);
}

.skill-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

.skill-card {
  padding: var(--space-6);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-fast);
}

.skill-card:hover {
  border-color: var(--color-secondary);
  transform: translateY(-2px);
}

.skill-card h4 {
  font-family: var(--font-mono);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.skill-card p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

/* ==========================================================================
   BELIEF CARDS (Index page philosophy)
   ========================================================================== */

.belief-cards {
  display: grid;
  gap: var(--space-6);
}

.belief-card {
  padding: var(--space-6);
  background: var(--color-bg-elevated);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--border-radius-lg) var(--border-radius-lg) 0;
}

.belief-card h3 {
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.belief-card p {
  color: var(--color-text-muted);
}

/* ==========================================================================
   PRODUCTS GRID (Index page)
   ========================================================================== */

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.product-card {
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  text-align: center;
  transition: all var(--transition-fast);
}

.product-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.product-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.product-tagline {
  font-size: var(--text-sm);
  color: var(--color-secondary);
  margin-bottom: var(--space-4);
}

.product-card p:not(.product-tagline) {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.products-bridge {
  text-align: center;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ==========================================================================
   START OPTIONS (Index page)
   ========================================================================== */

.start-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.start-option {
  padding: var(--space-6);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
}

.start-option h4 {
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.start-option p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

/* ==========================================================================
   VIDEO EMBED
   ========================================================================== */

.video-container {
  max-width: 720px;
  margin: 0 auto;
}

.video-embed {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  transition: box-shadow var(--transition-base);
}

.video-embed:hover {
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.4),
    0 0 20px rgba(139, 92, 246, 0.15);
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-context {
  margin-top: var(--space-6);
  text-align: center;
}

.video-context h3 {
  color: var(--color-primary);
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}

.video-context p {
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* ==========================================================================
   CONTENT BRIDGE
   ========================================================================== */

.section-bridge {
  padding: var(--space-8) 0;
}

.bridge-text {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-lg);
}

.bridge-text a {
  color: var(--color-primary);
}

/* ==========================================================================
   AGENTIC SKILLS - CATEGORY BADGES
   ========================================================================== */

.category-badge {
  display: inline-block;
  padding: 0.25em 0.75em;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--border-radius);
  color: white;
}

.category-badge--start-here {
  background: var(--color-start-here);
}

.category-badge--next-step {
  background: var(--color-next-step);
}

.category-badge--supporting {
  background: var(--color-supporting);
}

.category-badge--lifecycle {
  background: var(--color-lifecycle);
}

.category-badge--advanced {
  background: var(--color-advanced);
}

.category-badge--create {
  background: var(--color-create);
}

.category-badge--transform {
  background: var(--color-transform);
}

.category-badge--combine {
  background: var(--color-combine);
}

/* CJK character display in skill cards */
.skill-cjk {
  font-size: 1.5em;
  opacity: 0.7;
}

/* Generic badges */
.badge {
  display: inline-block;
  padding: 0.2em 0.6em;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--border-radius);
  margin-left: var(--space-2);
  vertical-align: middle;
}

.badge--coming-soon {
  background: var(--color-text-muted);
  color: var(--color-bg);
}

/* Quick Start callout */
.quick-start-callout {
  background: linear-gradient(135deg, var(--color-start-here), var(--color-next-step));
  padding: var(--space-4) var(--space-6);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--space-8);
  color: white;
}

.quick-start-callout p {
  margin: 0;
}

.quick-start-callout code {
  background: rgba(255, 255, 255, 0.2);
  padding: 0.125em 0.5em;
  border-radius: 4px;
}

/* ==========================================================================
   AGENTIC SKILLS - SKILL COMMAND DISPLAY
   ========================================================================== */

.skill-command {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background: var(--color-code-bg);
  padding: 0.125em 0.5em;
  border-radius: 4px;
  color: var(--color-primary);
  margin-left: var(--space-2);
}

/* ==========================================================================
   AGENTIC SKILLS - TECHNICAL DETAILS EXPANDABLE
   ========================================================================== */

.technical-details {
  margin-top: var(--space-6);
  background: var(--color-bg-elevated);
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.technical-details summary {
  padding: var(--space-4);
  cursor: pointer;
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  transition: color var(--transition-fast);
}

.technical-details summary:hover {
  color: var(--color-text);
}

.technical-details[open] summary {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.technical-details .details-content {
  padding: var(--space-4);
}

.technical-details ul {
  margin: var(--space-3) 0;
  padding-left: var(--space-5);
}

.technical-details li {
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

.technical-details strong {
  color: var(--color-primary);
}

/* ==========================================================================
   ECOSYSTEM DIAGRAM (Agentic page)
   ========================================================================== */

.ecosystem-diagram {
  margin: var(--space-6) 0;
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
}

.ecosystem-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.ecosystem-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--border-radius);
  text-align: center;
  min-width: 200px;
}

.ecosystem-node--yours {
  background: var(--color-primary);
  color: var(--color-bg);
}

.ecosystem-node--yours .ecosystem-desc {
  color: rgba(10, 10, 15, 0.7);
}

.ecosystem-node--partner {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
}

.ecosystem-label {
  font-weight: var(--weight-semibold);
  font-size: var(--text-base);
}

.ecosystem-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.ecosystem-arrows {
  display: flex;
  gap: var(--space-8);
}

.ecosystem-arrow-group {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ecosystem-arrow {
  font-size: var(--text-xl);
  color: var(--color-secondary);
}

.ecosystem-arrow-label {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-secondary);
  font-weight: var(--weight-medium);
}

.ecosystem-partners {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

@media (max-width: 600px) {
  .ecosystem-partners {
    flex-direction: column;
  }

  .ecosystem-arrows {
    gap: var(--space-4);
  }
}

/* ==========================================================================
   PRODUCTS SHOWCASE (Four-product ecosystem)

   Note: Uses explicit breakpoints (not auto-fit like .products-grid) because
   we always want exactly 4 columns for 4 products at desktop width.
   ========================================================================== */

.products-showcase {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

@media (min-width: 640px) {
  .products-showcase {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .products-showcase {
    grid-template-columns: repeat(2, 1fr);
  }
}

.product-item {
  padding: var(--space-6);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  text-align: center;
  transition: all var(--transition-fast);
}

.product-item:hover {
  border-color: var(--color-secondary);
}

@media (prefers-reduced-motion: no-preference) {
  .product-item:hover {
    transform: translateY(-2px);
  }
}

.product-item--featured {
  border-color: var(--color-primary);
  background: var(--color-bg-elevated);
  background: linear-gradient(
    135deg,
    var(--color-bg-elevated) 0%,
    color-mix(in srgb, var(--color-primary) 10%, transparent) 100%
  );
}

.product-item h3 {
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.product-item p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.ecosystem-philosophy {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
  margin-top: var(--space-2);
}

/* ==========================================================================
   COPY-TO-CLIPBOARD
   ========================================================================== */

.code-block-wrapper {
  position: relative;
}

.copy-btn {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.code-block-wrapper:hover .copy-btn,
.copy-btn:focus-visible {
  opacity: 1;
}

.copy-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.copy-btn--success {
  color: #10b981;
  border-color: #10b981;
}

@media (hover: none) {
  .copy-btn {
    opacity: 1;
  }
}