/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--bg-dark);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 0 20px var(--primary-glow);
}

.btn-secondary {
  background-color: var(--surface-hover);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--surface-card);
  border-color: var(--primary);
}

.btn-ghost {
  color: var(--text-muted);
}

.btn-ghost:hover {
  color: var(--text-main);
  background-color: var(--surface-hover);
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.badge-primary {
  background-color: rgba(0, 163, 224, 0.15);
  color: var(--primary);
  border: 1px solid rgba(0, 163, 224, 0.3);
}

.badge-accent {
  background-color: rgba(178, 210, 53, 0.15);
  color: var(--accent);
  border: 1px solid rgba(178, 210, 53, 0.3);
}

/* Cards */
.bx-card {
  background-color: var(--surface-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bx-card:hover {
  border-color: var(--border-focus);
  background-color: var(--surface-card);
  transform: translateY(-2px);
}

.card-icon-box {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-md);
  background-color: var(--surface-hover);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

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

/* Hero Elements */
.hero-section {
  position: relative;
  padding: 5rem 0 6rem 0;
  overflow: hidden;
}

.hero-grid-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(30, 41, 59, 0.4) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 41, 59, 0.4) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
  pointer-events: none;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3.5rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background-color: var(--surface-dark);
  border: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.pill-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
}

.hero-title {
  font-size: clamp(2.25rem, 4.5vw, 3.75rem);
  letter-spacing: -0.03em;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 2rem;
  max-width: 580px;
}

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

.hero-metrics {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.metric-value {
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.metric-separator {
  width: 1px;
  height: 2rem;
  background-color: var(--border-color);
}

/* Technical Blueprint Card */
.technical-blueprint-card {
  background-color: var(--surface-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.blueprint-header {
  background-color: #070D1E;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.terminal-dots {
  display: flex;
  gap: 0.35rem;
}

.terminal-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--border-color);
}

.blueprint-spec {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--primary);
  letter-spacing: 0.05em;
}

.blueprint-body {
  padding: 1.5rem;
  background-color: #0B132B;
}

.coordinate-axis {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.coord-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  color: var(--text-dim);
}

.wireframe-graphic {
  height: 140px;
  border: 1px dashed var(--primary);
  border-radius: var(--radius-sm);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 10px;
  background: rgba(0, 163, 224, 0.03);
}

.wireframe-rect {
  border: 1px solid var(--accent);
  background-color: rgba(178, 210, 53, 0.05);
  height: 100%;
}

.wireframe-rect.inner-left,
.wireframe-rect.inner-mid,
.wireframe-rect.inner-right {
  width: 28%;
}

.dimension-line.horizontal {
  position: absolute;
  bottom: -15px;
  left: 10px;
  right: 10px;
  border-bottom: 1px solid var(--primary);
  display: flex;
  justify-content: center;
}

.dim-label {
  position: absolute;
  top: -8px;
  background-color: #0B132B;
  padding: 0 6px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--primary);
}

.parameter-code-block {
  margin-top: 1.5rem;
  padding: 0.75rem;
  background-color: rgba(2, 6, 23, 0.8);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.code-kw { color: var(--primary); font-weight: 700; }
.code-val { color: var(--accent); }

.blueprint-footer {
  padding: 0.75rem 1.5rem;
  background-color: var(--surface-dark);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
}

.audit-status {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
}

/* Fundamentals Layout */
.fundamentals-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.fundamentals-list {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  color: var(--text-main);
  font-size: 0.9375rem;
}

.fundamentals-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.syllabus-card {
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.syllabus-header {
  padding: 1rem 1.25rem;
  background-color: var(--surface-hover);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.syllabus-body {
  padding: 0.5rem 1.25rem;
  display: flex;
  flex-direction: column;
}

.syllabus-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.syllabus-row:last-child {
  border-bottom: none;
}

.row-index {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--primary);
}

.row-title {
  font-size: 0.875rem;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.row-meta {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Pedagogy Pipeline */
.pedagogy-pipeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}

.step-card {
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem;
  text-align: center;
}

.step-card.highlight {
  border-color: var(--accent);
  background-color: rgba(178, 210, 53, 0.03);
}

.step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.step-title {
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.step-card.highlight .step-title {
  color: var(--accent);
}

.step-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.step-connector {
  display: none;
}

/* Certification Section */
.certification-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.cert-checks {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2rem;
}

.cert-check-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.check-title {
  font-size: 0.9375rem;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.check-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.cert-mockup {
  background: linear-gradient(135deg, rgba(0, 163, 224, 0.2), rgba(178, 210, 53, 0.2));
  padding: 2px;
  border-radius: var(--radius-lg);
}

.cert-mockup-inner {
  background-color: var(--surface-dark);
  border-radius: calc(var(--radius-lg) - 2px);
  padding: 2rem;
}

.cert-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
}

.cert-body {
  text-align: center;
  padding: 2rem 0;
}

.cert-subtitle {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.cert-name {
  font-size: 1.5rem;
  margin: 0.75rem 0 0.5rem 0;
}

.cert-reason {
  font-size: 0.75rem;
  color: var(--text-muted);
  max-width: 280px;
  margin: 0 auto 0.75rem auto;
}

.cert-course {
  font-size: 1rem;
  color: var(--primary);
}

.cert-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
}

.cert-sig {
  display: flex;
  flex-direction: column;
}

/* Feature Box */
.feature-box {
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.feature-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent);
  font-weight: 700;
  display: block;
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.feature-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* CTA Box */
.cta-section {
  padding: 6rem 0;
  background-color: var(--bg-dark);
}

.cta-box {
  background: linear-gradient(135deg, rgba(0, 163, 224, 0.1), rgba(178, 210, 53, 0.05));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 4rem 2rem;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.cta-subtitle {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 2rem auto;
  line-height: 1.6;
}

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

/* Loading & Empty State Components */
.state-box {
  padding: 3rem 1.5rem;
  text-align: center;
  background-color: var(--surface-dark);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  grid-column: 1 / -1;
}

.spinner {
  width: 2rem;
  height: 2rem;
  border: 2px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1rem auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.state-title {
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.state-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}