/* ==========================================================================
   NexusCraft Enterprise Component Stylesheet
   Hero Showcase | Trust Banner | Pricing Cards | Blog Grid | FAQ Accordion
   ========================================================================== */

/* --- Hero Section & Glassmorphic Showcase Card --- */
.hero-section {
  padding-top: 2rem;
  padding-bottom: 3.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-headline {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.04em;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.hero-subheadline {
  font-size: 1.2rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 2.25rem;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Glassmorphic UI Card Showcase */
.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.showcase-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.card-header-bar {
  background: #0D1117;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.window-dots {
  display: flex;
  gap: 6px;
}

.dot-btn {
  display: inline-block;
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-red {
  background-color: #FF5F56;
}

.dot-yellow {
  background-color: #FFBD2E;
}

.dot-green {
  background-color: #27C93F;
}

.window-title {
  color: #8B949E;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 500;
}

.card-body-content {
  padding: 1.5rem;
  background: #0D1117;
  color: #C9D1D9;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  line-height: 1.7;
  min-height: 260px;
  /* Preserve height during typing animation */
}

/* Syntax Highlighting Colors (TypeScript Theme) */
.code-keyword { color: #FF7B72; }      /* Red/Pink-Purple keyword */
.code-type { color: #79C0FF; }         /* Cyan/Light Blue types */
.code-string { color: #A5D6FF; }       /* Light Green/Blue strings */
.code-comment { color: #8B949E; font-style: italic; } /* Gray comments */
.code-yellow { color: #FBBF24; }       /* Yellow property keys */
.code-symbol { color: #FF7B72; }       /* Braces/symbols */

/* Live Runtime Badge */
.live-runtime-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  color: #58A6FF;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  background: rgba(88, 166, 255, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: 9999px;
  border: 1px solid rgba(88, 166, 255, 0.2);
}

.live-runtime-badge.live-green {
  color: #3FB950;
  background: rgba(63, 185, 80, 0.10);
  border-color: rgba(63, 185, 80, 0.25);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  background-color: #3FB950;
  border-radius: 50%;
  position: relative;
  display: inline-block;
}

.pulse-dot::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #3FB950;
  animation: pulse-ring 2s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.9);
    opacity: 0.8;
  }

  80% {
    transform: scale(2.8);
    opacity: 0;
  }

  100% {
    transform: scale(2.8);
    opacity: 0;
  }
}

/* Terminal Cursor animation */
.terminal-cursor {
  display: inline-block;
  width: 8px;
  height: 15px;
  background-color: #3FB950;
  margin-left: 3px;
  animation: cursor-blink 0.8s step-end infinite;
  vertical-align: middle;
}

@keyframes cursor-blink {

  from,
  to {
    background-color: transparent;
  }

  50% {
    background-color: #3FB950;
  }
}


.speed-metrics-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-color);
}

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

.metric-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
}

.metric-lbl {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* --- Enterprise Trust & Security Banner --- */
.trust-banner {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  margin-top: 1rem;
  margin-bottom: 4rem;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.trust-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.trust-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trust-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.trust-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* --- Value Proposition Grid --- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.value-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  transition: transform var(--transition-fast);
}

.value-card:hover .icon-box {
  transform: scale(1.1);
  background: var(--primary);
  color: #FFFFFF;
}

.value-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.value-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- Featured Case Study (LearnEra) Banner --- */
.case-study-hero-card {
  background: linear-gradient(135deg, #FFFFFF 0%, #F8FAFC 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
  box-shadow: var(--shadow-md);
  margin-top: 3rem;
  margin-bottom: 4rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.tag-item {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-body);
}

.highlights-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
  margin-bottom: 2rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-main);
}

.highlight-item svg {
  color: #10B981;
  flex-shrink: 0;
}

/* LearnEra Live Certificate Verifier Box */
.cert-verifier-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.verifier-input-group {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.verifier-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  outline: none;
  transition: border-color var(--transition-fast);
}

.verifier-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.verifier-result {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  display: none;
}

.verifier-result.success {
  display: block;
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  color: #065F46;
}

.verifier-result.error {
  display: block;
  background: #FEF2F2;
  border: 1px solid #FCA5A5;
  color: #991B1B;
}

/* --- LearnEra AI Assistant Interactive Simulator --- */
.ai-assistant-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-top: 2rem;
}

.chat-header {
  background: var(--primary-light);
  border-bottom: 1px solid rgba(37, 99, 235, 0.15);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.chat-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.chat-messages {
  height: 240px;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--bg-subtle);
}

.msg-bubble {
  max-width: 80%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  line-height: 1.5;
}

.msg-ai {
  align-self: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.msg-user {
  align-self: flex-end;
  background: var(--primary);
  color: #FFFFFF;
}

.chat-input-row {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
}

.chat-input {
  flex: 1;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  outline: none;
}

/* --- Engagement & Pricing Models --- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-top: 2rem;
  margin-bottom: 4rem;
}

.pricing-card {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  transition: all var(--transition-normal);
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow), var(--shadow-md);
}

.pricing-card-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary);
}

.pricing-price {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-top: 1rem;
  margin-bottom: 1.5rem;
}

/* --- Interactive Service Scope Estimator --- */
.estimator-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  margin-top: 3rem;
  margin-bottom: 4rem;
}

.estimator-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

@media (max-width: 1024px) {
  .estimator-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .estimator-grid-4 {
    grid-template-columns: 1fr;
  }
}

.estimator-card {
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 145px;
}

.estimator-card.selected {
  border-color: var(--primary);
  background: var(--primary-light);
}

.estimator-card h4 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

.estimator-summary-box {
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* --- Engineering Methodology Workflow Grid --- */
.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  position: relative;
  transition: all var(--transition-normal);
}

.step-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.step-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.18;
  line-height: 1;
  margin-bottom: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
}

.step-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

/* --- Insights & Blog Cards --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
}

.blog-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.blog-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.blog-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.blog-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

/* --- FAQ Accordion --- */
.faq-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: var(--primary);
}

.faq-question {
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-answer {
  padding: 0 1.5rem 1.25rem 1.5rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-icon {
  font-size: 1.25rem;
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

/* Contact Form Grid */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  margin-top: 2rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--text-main);
  background: var(--bg-card);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* Compliance Badges */
.compliance-badge-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.compliance-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  background: #F1F5F9;
  color: var(--text-body);
  border: 1px solid var(--border-color);
}

/* Booking Widget */
.booking-widget-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

.time-slots-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 1.25rem;
  margin-bottom: 1.5rem;
}

.slot-btn {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-fast);
}

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

.slot-btn.selected {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
}

/* Modal Overlay */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(6px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.open {
  display: flex;
}

.modal-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  animation: modal-pop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
  overflow-y: auto;
}

@keyframes modal-pop {
  from {
    transform: scale(0.95);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
}

/* --- Helper Responsive Grids --- */
.responsive-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

/* Responsive Component Rules */
@media (max-width: 1024px) {
  .responsive-grid-2 {
    grid-template-columns: 1fr;
  }

  .hero-section {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-study-hero-card {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .workflow-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .estimator-summary-box {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .estimator-summary-box .btn {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .hero-headline {
    font-size: 2.25rem;
  }

  .trust-grid {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .workflow-grid {
    grid-template-columns: 1fr;
  }

  .case-study-hero-card {
    padding: 1.5rem;
  }

  .estimator-container {
    padding: 1.5rem;
  }

  .pricing-card {
    padding: 1.75rem;
  }

  .pricing-card-badge {
    position: static;
    display: inline-block;
    margin-bottom: 0.75rem;
  }

  .verifier-input-group {
    flex-direction: column;
  }

  .verifier-input-group .btn {
    width: 100%;
  }

  .chat-input-row {
    flex-wrap: wrap;
  }

  .chat-input {
    width: 100%;
    min-width: 0;
  }

  .chat-input-row .btn {
    flex: 1;
  }

  .time-slots-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Fluid typography and layout overrides for mobile screens */
  h2[style*="font-size: 2.25rem"],
  .case-study-hero-card h2 {
    font-size: 1.75rem !important;
  }
  h2[style*="font-size: 2rem"] {
    font-size: 1.5rem !important;
  }
  h3[style*="font-size: 1.5rem"] {
    font-size: 1.25rem !important;
  }
  h3[style*="font-size: 1.35rem"] {
    font-size: 1.2rem !important;
  }
  .pricing-price {
    font-size: 1.75rem !important;
  }

  /* Ensure card spacing and proper margins for card elements on mobile */
  .value-card, .pricing-card, .estimator-card, .booking-widget-card, .cert-verifier-box {
    margin-bottom: 1.25rem !important;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .hero-headline {
    font-size: 1.85rem;
  }

  .hero-subheadline {
    font-size: 1rem;
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta-group .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .trust-banner {
    padding: 1.25rem;
  }

  .trust-item {
    flex-direction: row;
    align-items: flex-start;
  }

  .case-study-hero-card {
    padding: 1.25rem;
  }

  .cert-verifier-box {
    padding: 1.25rem;
  }

  .ai-assistant-widget .chat-messages {
    height: 200px;
  }

  .estimator-container {
    padding: 1.25rem;
  }

  .modal-card {
    padding: 1.5rem;
  }

  .time-slots-grid {
    grid-template-columns: 1fr;
  }

  .booking-widget-card {
    padding: 1.25rem;
  }

  .step-card {
    padding: 1.5rem 1.25rem;
  }
}