/**
 * [Variables] | [Constants] | [Dependencies] | [Integration Points]
 * - Variables: Section layouts, Navigation bar, Architecture canvas, Project grid
 * - Constants: Grid ratios, hero dimensions, animation keyframes
 * - Dependencies: tokens.css, base.css, components.css
 * - Integration Points: Styles all semantic sections in index.html
 */

/* NAVBAR */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 500;
  display: flex;
  align-items: center;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  margin-right: 28px;
  flex-shrink: 0;
}

.brand-logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-normal);
}

.brand-logo-wrap:hover .brand-logo-img {
  transform: scale(1.05);
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: color var(--transition-fast);
}

[data-theme="light"] .brand-name {
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: #0F172A;
  color: #0F172A;
}

.brand-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 9999px;
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-violet);
  border: 1px solid rgba(139, 92, 246, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

[data-theme="light"] .brand-badge {
  background: #ECE8FF;
  color: #7C3AED;
  border-color: rgba(124, 58, 237, 0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-violet);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* THEME TOGGLE */
.theme-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--border-focus);
  color: var(--text-primary);
}

/* MOBILE NAV TOGGLE */
.mobile-nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  align-items: center;
  justify-content: center;
}

/* HERO SECTION */
.hero-section {
  padding-top: calc(var(--header-height) + 64px);
  padding-bottom: 80px;
  position: relative;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.stage-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.stage-pill .live-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 12px var(--accent-emerald); }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  margin-bottom: 20px;
  line-height: 1.15;
}

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

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

/* STATS ROW */
.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.stat-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-top: 2.5px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.stat-item:hover {
  transform: translateY(-3px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-gold-glow);
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* SECTION HEADERS */
.section-wrapper {
  padding: 96px 0;
  position: relative;
  border-top: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-violet);
  margin-bottom: 12px;
}

.section-title {
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* INTERACTIVE ARCHITECTURE CANVAS */
.arch-canvas-container {
  background: var(--bg-surface);
  border: 1.5px solid var(--border-gold);
  border-radius: var(--radius-xl);
  padding: 32px;
  position: relative;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), var(--shadow-gold-glow);
  overflow: hidden;
}

.arch-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.arch-status-stream {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.arch-node-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
}

.arch-node {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  position: relative;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.arch-node:hover, .arch-node.active {
  border-color: var(--accent-gold);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.25);
  transform: translateY(-4px);
}

.arch-node-icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
}

.arch-node-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.arch-node-sub {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.arch-detail-display {
  margin-top: 24px;
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* PLATFORM MODULES GRID */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 24px;
}

.module-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.module-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-violet);
  margin-bottom: 12px;
}

.module-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.module-desc {
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.module-capabilities {
  list-style: none;
  margin-bottom: 24px;
}

.module-capabilities li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.module-capabilities li::before {
  content: '✓';
  color: var(--accent-emerald);
  font-weight: 800;
}

/* PROVIDER SELECTOR INTERACTION */
.provider-picker-box {
  margin-top: 48px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.provider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.provider-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.provider-card:hover, .provider-card.selected {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 16px var(--accent-cyan-glow);
}

/* PROJECTS SHOWCASE */
.projects-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.filter-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 9999px;
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--accent-violet);
  color: #FFFFFF;
  border-color: var(--accent-violet);
}

.search-input-wrap {
  position: relative;
  min-width: 280px;
}

.search-input {
  width: 100%;
  padding: 10px 16px 10px 38px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-gold-border);
  opacity: 0.6;
  transition: opacity var(--transition-normal);
}

.project-card:hover {
  border-color: var(--border-gold);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), var(--shadow-gold-glow);
  transform: translateY(-4px);
}

.project-card:hover::before {
  opacity: 1;
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 14px;
}

.project-name {
  font-size: 1.3rem;
  margin-bottom: 4px;
}

.project-tag {
  font-size: 0.8rem;
  color: var(--accent-violet);
  font-weight: 600;
}

.project-summary {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex-grow: 1;
}

.project-tech-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.tech-pill {
  font-size: 0.75rem;
  padding: 3px 8px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--text-secondary);
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
}

/* WORKFLOW RUNNER */
.workflow-runner-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px;
}

.workflow-tabs {
  display: flex;
  gap: 12px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 16px;
  margin-bottom: 28px;
  overflow-x: auto;
}

.workflow-tab-btn {
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.workflow-tab-btn.active {
  background: var(--accent-violet);
  color: #FFFFFF;
  border-color: var(--accent-violet);
}

.workflow-progress-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.step-indicator-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.step-indicator-card.active {
  border-color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.08);
}

.step-indicator-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-emerald);
}

.step-indicator-title {
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 4px;
}

.workflow-stage-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

/* DEVELOPER HUB */
.dev-hub-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 36px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-trigger {
  width: 100%;
  padding: 18px 24px;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-surface);
  cursor: pointer;
}

.faq-content {
  padding: 0 24px 20px 24px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: none;
}

.faq-item.open .faq-content {
  display: block;
}

/* ROADMAP */
.roadmap-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.roadmap-phase-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.phase-header {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 16px;
}

.phase-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.phase-item-title {
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.phase-item-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ABOUT SECTION */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 28px;
}

.pillar-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
}

.pillar-title {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--accent-violet);
}

.pillar-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

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

.contact-meta-box {
  background: var(--bg-surface);
  border: 1.5px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-gold-glow);
}

.contact-channel {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(139, 92, 246, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-violet);
  font-size: 1.4rem;
}

/* FOOTER */
.site-footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 32px 0;
  margin-top: 96px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 14px;
  max-width: 320px;
}

.footer-col-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 28px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  flex-wrap: wrap;
  gap: 16px;
}