/* ==========================================================================
   LUCIEN — REUSABLE UI COMPONENTS (LIGHT OFF-COLOR THEME)
   ========================================================================== */

/* 1. Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(248, 249, 252, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: height var(--transition-base), background var(--transition-base), border-color var(--transition-base);
}

.site-header.scrolled {
  height: 62px;
  background: rgba(248, 249, 252, 0.95);
  border-bottom-color: var(--border-medium);
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: var(--container-wide);
  height: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.brand-logo .brand-name {
  background: linear-gradient(180deg, #0F172A 0%, #334155 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.55rem 0.9rem;
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: rgba(15, 23, 42, 0.05);
}

.dropdown-icon {
  transition: transform var(--transition-fast);
}

.nav-item:hover .dropdown-icon, .nav-item.open .dropdown-icon {
  transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  background: var(--bg-panel);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 100;
}

.nav-item:hover .dropdown-menu, .nav-item.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mega-menu {
  width: 580px;
}

.mega-menu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.mega-column {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mega-section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  padding: 0.25rem 0.5rem;
}

.mega-link {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.mega-link:hover {
  background: rgba(15, 23, 42, 0.04);
  transform: translateX(3px);
}

.mega-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(79, 70, 229, 0.1);
  color: var(--accent-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.mega-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.mega-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
  line-height: 1.35;
}

.dropdown-grid-single {
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.dropdown-grid-single .mega-link {
  flex-direction: column;
  gap: 0.15rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 8px;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.mobile-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  z-index: 999;
  overflow-y: auto;
  padding: 2rem 1.5rem 3rem 1.5rem;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--transition-slow), opacity var(--transition-slow), visibility var(--transition-slow);
}

.mobile-nav-drawer.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav-group {
  margin-bottom: 2rem;
}

.mobile-group-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-link {
  display: block;
  padding: 0.65rem 0;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.mobile-link:hover {
  color: var(--text-primary);
}

/* 2. Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: var(--accent-primary);
  color: #FFFFFF;
  box-shadow: 0 2px 10px rgba(79, 70, 229, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.42);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-panel);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--bg-panel-light);
  border-color: var(--text-muted);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(15, 23, 42, 0.05);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.95rem 2rem;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

/* 3. Cards & Panels */
.card {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-glow:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-md), 0 0 20px rgba(79, 70, 229, 0.12);
}

.card-header {
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.card-icon {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(79, 70, 229, 0.09);
  color: var(--accent-primary);
  margin-bottom: 1.25rem;
}

.card-icon.cyan {
  background: rgba(2, 132, 199, 0.09);
  color: var(--accent-secondary);
}

.card-icon.violet {
  background: rgba(124, 58, 237, 0.09);
  color: var(--accent-violet);
}

/* 4. Badges & Status */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.badge-success { background: var(--success-bg); color: var(--success); border-color: rgba(5, 150, 105, 0.25); }
.badge-warning { background: var(--warning-bg); color: var(--warning); border-color: rgba(217, 119, 6, 0.25); }
.badge-danger { background: var(--danger-bg); color: var(--danger); border-color: rgba(220, 38, 38, 0.25); }
.badge-info { background: var(--info-bg); color: var(--info); border-color: rgba(2, 132, 199, 0.25); }
.badge-neutral { background: rgba(15, 23, 42, 0.05); color: var(--text-secondary); border-color: var(--border-subtle); }

/* 5. Hero Component */
.hero-section {
  padding-top: calc(var(--nav-height) + 4rem);
  padding-bottom: 5rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 650px;
  height: 650px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.12) 0%, rgba(2, 132, 199, 0.05) 50%, transparent 70%);
  top: 5%;
  left: 50%;
  transform: translateX(-50%);
  filter: blur(70px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-title {
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero-subtext {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 2.5rem auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

/* 6. Live Interactive Demo Container */
.demo-container {
  background: var(--bg-panel);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  margin-top: 2rem;
}

.demo-header-bar {
  background: var(--bg-panel-light);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.demo-case-identity {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.demo-case-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.demo-case-meta h4 {
  font-size: 1.1rem;
  margin-bottom: 0.15rem;
}

.demo-case-meta p {
  font-size: 0.825rem;
  color: var(--text-muted);
}

.demo-status-pills {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.demo-tabs-nav {
  display: flex;
  align-items: center;
  background: var(--bg-panel-light);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 1.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.demo-tabs-nav::-webkit-scrollbar { display: none; }

.demo-tab-btn {
  padding: 0.85rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.demo-tab-btn:hover {
  color: var(--text-primary);
}

.demo-tab-btn.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.demo-tab-pane {
  display: none;
  padding: 2rem;
}

.demo-tab-pane.active {
  display: block;
}

/* 7. Accordions */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.accordion-item {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.accordion-item.active {
  border-color: var(--border-medium);
}

.accordion-header {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  background: none;
}

.accordion-icon {
  transition: transform var(--transition-base);
  color: var(--text-muted);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
  color: var(--accent-primary);
}

.accordion-body {
  padding: 0 1.5rem 1.5rem 1.5rem;
  color: var(--text-secondary);
  display: none;
}

.accordion-item.active .accordion-body {
  display: block;
}

/* 8. Global CTA Section */
.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-card {
  background: linear-gradient(180deg, #FFFFFF 0%, #EDF2F7 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: clamp(3rem, 6vw, 5rem) clamp(1.5rem, 4vw, 4rem);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-glow-bg {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.15) 0%, rgba(2, 132, 199, 0.08) 40%, transparent 70%);
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  filter: blur(50px);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.cta-title {
  margin-bottom: 1.25rem;
}

.cta-desc {
  font-size: 1.15rem;
  margin-bottom: 2.5rem;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.cta-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.cta-badge .badge-dot {
  background: var(--accent-primary);
}

/* 9. Footer */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 5rem 0 2.5rem 0;
  position: relative;
  z-index: 1;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 4rem;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-primary);
}

.footer-tagline {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 320px;
}

.footer-philosophy {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--accent-primary);
}

.footer-philosophy .philosophy-dot {
  color: var(--text-muted);
}

.footer-legal-entity {
  margin-top: 0.5rem;
  padding: 1rem;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  max-width: 380px;
}

.entity-name {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
  letter-spacing: 0.05em;
}

.entity-address {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-link-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link-list a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.footer-link-list a:hover {
  color: var(--accent-primary);
  transform: translateX(2px);
}

.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-bottom-links a:hover {
  color: var(--text-primary);
}

/* 10. Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--bg-panel);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
  outline: none;
}

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

.form-status-message {
  display: none;
  padding: 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.form-status-message.success {
  background: var(--success-bg);
  border: 1px solid rgba(5, 150, 105, 0.3);
  color: var(--success);
}

.form-status-message.error {
  background: var(--danger-bg);
  border: 1px solid rgba(220, 38, 38, 0.3);
  color: var(--danger);
}

/* Chat Engine in Demo */
.chat-prompt-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.chat-prompt-chip {
  background: var(--bg-panel-light);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-full);
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chat-prompt-chip:hover {
  background: rgba(79, 70, 229, 0.1);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.chat-ai-msg {
  background: var(--bg-panel-light);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  font-size: 0.925rem;
  color: var(--text-primary);
  line-height: 1.6;
  margin-top: 1rem;
}