/* ==========================================================================
   BOM Workbench — Public Landing Experience Stylesheet
   Theme: Modern Engineering Laboratory + Configuration Graph + Cryptographic Trust
   Pure Vanilla CSS (Zero external frameworks, 100% theme token compliant)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Root Page & Mode Layout
   -------------------------------------------------------------------------- */

body.landing-active {
  overflow-y: auto !important;
  overflow-x: hidden !important;
  height: auto !important;
  min-height: 100vh;
}

body.workbench-active {
  overflow: hidden !important;
  height: 100vh !important;
}

.landing-page {
  position: relative;
  width: 100%;
  min-height: 100vh;
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

/* Subtle engineering grid background texture */
.landing-page::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  background-image: 
    radial-gradient(var(--border-subtle) 1px, transparent 1px),
    linear-gradient(to right, color-mix(in srgb, var(--border-subtle) 25%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--border-subtle) 25%, transparent) 1px, transparent 1px);
  background-size: 40px 40px, 120px 120px, 120px 120px;
  background-position: 0 0, 0 0, 0 0;
  opacity: 0.5;
}

[data-theme="dark"] .landing-page::before {
  opacity: 0.35;
}

.landing-content-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}

/* --------------------------------------------------------------------------
   2. Sticky Navigation Bar
   -------------------------------------------------------------------------- */

.landing-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  height: 64px;
  background: color-mix(in srgb, var(--bg-header) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.25s ease;
}

.landing-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
  gap: 20px;
}

.landing-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  user-select: none;
}

.landing-brand-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.2));
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.landing-brand:hover .landing-brand-logo {
  transform: scale(1.08) rotate(3deg);
}

.landing-brand-pill {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-primary) 14%, transparent);
  color: var(--color-primary);
  border: 1px solid color-mix(in srgb, var(--color-primary) 30%, transparent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.landing-nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.landing-nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: color 0.18s ease;
  position: relative;
  padding: 6px 0;
}

.landing-nav-link:hover {
  color: var(--color-primary);
}

.landing-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.2s ease;
  border-radius: var(--radius-pill);
}

.landing-nav-link:hover::after {
  width: 100%;
}

.landing-nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.landing-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  background-color: var(--color-primary);
  color: #ffffff;
  border: 1px solid color-mix(in srgb, var(--color-primary) 80%, black);
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
}

.landing-nav-cta:hover {
  background-color: var(--color-primary-hover);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--color-primary) 35%, transparent);
  transform: translateY(-1px);
}

.landing-nav-cta:active {
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   3. Common Section Structure & Typography
   -------------------------------------------------------------------------- */

.landing-section {
  padding: 88px 0;
  position: relative;
  border-bottom: 1px solid color-mix(in srgb, var(--border-color) 70%, transparent);
}

.landing-section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 52px auto;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 24%, transparent);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.25;
  color: var(--text-primary);
  margin: 0 0 14px 0;
}

.section-subtitle {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
  font-weight: 400;
}

/* --------------------------------------------------------------------------
   4. Hero Section
   -------------------------------------------------------------------------- */

.hero-section {
  padding: 90px 0 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-badge-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}

.hero-title-main {
  font-size: 56px;
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin: 0 auto 20px auto;
  max-width: 960px;
}

.hero-title-accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, #38bdf8 50%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-triad {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 18px auto 26px auto;
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.hero-triad-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-triad-bullet {
  color: var(--color-primary);
  font-size: 14px;
}

.hero-copy {
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 740px;
  margin: 0 auto 36px auto;
}

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

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 700;
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--color-primary) 70%, black);
  box-shadow: 0 4px 18px color-mix(in srgb, var(--color-primary) 32%, transparent);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-hero-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--color-primary) 45%, transparent);
}

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 600;
  background-color: var(--bg-card);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-hero-secondary:hover {
  background-color: var(--bg-hover);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

/* Hero Pipeline Visual Ribbon */
.hero-pipeline-container {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
}

.hero-pipeline-track {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  gap: 12px;
}

.hero-pipeline-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex: 1;
  position: relative;
  z-index: 2;
}

.hero-pipeline-icon-box {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-sm);
  transition: all 0.22s ease;
}

.hero-pipeline-step:hover .hero-pipeline-icon-box {
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 10%, var(--bg-card));
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 6px 16px color-mix(in srgb, var(--color-primary) 25%, transparent);
}

.hero-pipeline-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.hero-pipeline-sub {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
}

.hero-pipeline-arrow {
  color: var(--text-muted);
  font-size: 16px;
  user-select: none;
  opacity: 0.6;
}

/* --------------------------------------------------------------------------
   5. The Big Idea: "A BOM is more than a list"
   -------------------------------------------------------------------------- */

.big-idea-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.big-idea-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), #10b981, #f59e0b, #8b5cf6);
}

.big-idea-lead {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.6;
  max-width: 860px;
  margin: 0 auto 36px auto;
  text-align: center;
}

.big-idea-equation {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  padding: 24px;
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 36px;
}

.equation-pill {
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.pill-comp {
  background: color-mix(in srgb, var(--color-primary) 12%, var(--bg-card));
  color: var(--color-primary);
  border: 1px solid color-mix(in srgb, var(--color-primary) 35%, transparent);
}

.pill-rel {
  background: color-mix(in srgb, #0891b2 12%, var(--bg-card));
  color: #0891b2;
  border: 1px solid color-mix(in srgb, #0891b2 35%, transparent);
}

.pill-evid {
  background: color-mix(in srgb, #16a34a 12%, var(--bg-card));
  color: #16a34a;
  border: 1px solid color-mix(in srgb, #16a34a 35%, transparent);
}

.pill-prov {
  background: color-mix(in srgb, #d97706 12%, var(--bg-card));
  color: #d97706;
  border: 1px solid color-mix(in srgb, #d97706 35%, transparent);
}

.pill-result {
  background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
  color: #ffffff;
  border: 1px solid color-mix(in srgb, var(--color-primary) 70%, black);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--color-primary) 30%, transparent);
  padding: 11px 22px;
  font-size: 13px;
}

.equation-op {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-muted);
  user-select: none;
}

.big-idea-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.big-idea-col {
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.big-idea-col-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.big-idea-col-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* --------------------------------------------------------------------------
   6. Three Standards — One Workbench
   -------------------------------------------------------------------------- */

.standards-container {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 40px;
  align-items: center;
}

.standards-text {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.standards-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 12px 0;
}

.standards-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.standards-item:hover {
  border-color: var(--border-focus);
  transform: translateX(4px);
}

.standards-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.tag-cdx {
  background: color-mix(in srgb, #2563eb 14%, transparent);
  color: #2563eb;
  border: 1px solid color-mix(in srgb, #2563eb 30%, transparent);
}

.tag-spdx2 {
  background: color-mix(in srgb, #0891b2 14%, transparent);
  color: #0891b2;
  border: 1px solid color-mix(in srgb, #0891b2 30%, transparent);
}

.tag-spdx3 {
  background: color-mix(in srgb, #7c3aed 14%, transparent);
  color: #7c3aed;
  border: 1px solid color-mix(in srgb, #7c3aed 30%, transparent);
}

.standards-item-content strong {
  font-size: 13px;
  display: block;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.standards-item-content span {
  font-size: 12px;
  color: var(--text-secondary);
}

.standards-statement {
  padding: 14px 18px;
  background: color-mix(in srgb, var(--color-warning) 8%, var(--bg-card));
  border-left: 3px solid var(--color-warning);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.standards-visual-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.standards-svg-wrap {
  width: 100%;
  max-width: 480px;
}

/* --------------------------------------------------------------------------
   7. Create BOMs From Source
   -------------------------------------------------------------------------- */

.source-container {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 40px;
  align-items: center;
}

.source-ecosystem-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.eco-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.source-card-diagram {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.source-flow-step {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
}

.source-flow-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.source-flow-desc strong {
  display: block;
  font-size: 13px;
  color: var(--text-primary);
}

.source-flow-desc span {
  font-size: 11px;
  color: var(--text-muted);
}

.source-guardrail {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.45;
  margin-top: 14px;
}

/* --------------------------------------------------------------------------
   8. Four Relationship Semantics
   -------------------------------------------------------------------------- */

.semantic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.semantic-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  transition: all 0.2s ease;
}

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

.semantic-card.card-declared {
  border-top: 4px solid var(--rel-declared);
}

.semantic-card.card-resolved {
  border-top: 4px solid var(--rel-resolved);
}

.semantic-card.card-referenced {
  border-top: 4px solid var(--rel-referenced);
}

.semantic-card.card-source {
  border-top: 4px solid var(--rel-source);
}

.semantic-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  display: inline-block;
  align-self: flex-start;
}

.tag-declared {
  background: var(--rel-declared-bg);
  color: var(--rel-declared);
  border: 1px solid var(--rel-declared-border);
}

.tag-resolved {
  background: var(--rel-resolved-bg);
  color: var(--rel-resolved);
  border: 1px solid var(--rel-resolved-border);
}

.tag-referenced {
  background: var(--rel-referenced-bg);
  color: var(--rel-referenced);
  border: 1px solid var(--rel-referenced-border);
}

.tag-source {
  background: var(--rel-source-bg);
  color: var(--rel-source);
  border: 1px solid var(--rel-source-border);
}

.semantic-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.semantic-card-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

.semantic-interactive-diagram {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  text-align: center;
}

/* --------------------------------------------------------------------------
   9. Visualization Section
   -------------------------------------------------------------------------- */

.vis-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.vis-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all 0.22s ease;
}

.vis-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
}

.vis-preview-box {
  width: 100%;
  height: 140px;
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.vis-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.vis-card-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* --------------------------------------------------------------------------
   10. Compare BOMs Section
   -------------------------------------------------------------------------- */

.compare-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}

.compare-card-visual {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-md);
}

.compare-diff-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 20px 0;
}

.compare-diff-item {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.compare-quote {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  border-left: 3px solid var(--color-primary);
  padding-left: 16px;
  margin: 20px 0 0 0;
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   11. Post-Quantum Attestation (PQC)
   -------------------------------------------------------------------------- */

.pqc-card {
  background: var(--bg-card);
  border: 1px solid color-mix(in srgb, var(--color-primary) 35%, var(--border-color));
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.pqc-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #38bdf8, var(--color-primary), #8b5cf6);
}

.pqc-workflow-svg-wrap {
  width: 100%;
  margin: 32px 0;
}

.pqc-artifacts-triad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 28px 0;
}

.artifact-card {
  padding: 18px;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.artifact-filename {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
}

.artifact-desc {
  font-size: 12px;
  color: var(--text-secondary);
}

.pqc-guardrail-alert {
  padding: 14px 18px;
  background: color-mix(in srgb, var(--color-primary) 8%, var(--bg-card));
  border: 1px solid color-mix(in srgb, var(--color-primary) 25%, var(--border-color));
  border-radius: var(--radius-md);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   12. Privacy / Local Processing
   -------------------------------------------------------------------------- */

.privacy-banner {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 36px;
  align-items: center;
  box-shadow: var(--shadow-md);
}

.privacy-diagram-box {
  background: var(--bg-subtle);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* --------------------------------------------------------------------------
   13. Scope: What It Is — and Isn't
   -------------------------------------------------------------------------- */

.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.scope-col {
  padding: 30px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.scope-col.scope-is {
  border-top: 4px solid var(--color-success);
}

.scope-col.scope-isnt {
  border-top: 4px solid var(--color-danger);
}

.scope-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  align-self: flex-start;
}

.badge-is {
  background: color-mix(in srgb, var(--color-success) 12%, transparent);
  color: var(--color-success);
  border: 1px solid color-mix(in srgb, var(--color-success) 30%, transparent);
}

.badge-isnt {
  background: color-mix(in srgb, var(--color-danger) 12%, transparent);
  color: var(--color-danger);
  border: 1px solid color-mix(in srgb, var(--color-danger) 30%, transparent);
}

.scope-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.scope-list-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   14. About Us & 15. Contact
   -------------------------------------------------------------------------- */

.about-contact-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 36px;
}

.about-card, .contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.org-links-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.org-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.18s ease;
}

.org-link-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-focus);
  color: var(--color-primary);
}

.contact-email-box {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  font-size: 15px;
  font-weight: 700;
}

.contact-email-link {
  color: var(--color-primary);
  text-decoration: none;
}

.contact-email-link:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   16. Final CTA Section & Footer
   -------------------------------------------------------------------------- */

.final-cta-section {
  text-align: center;
  padding: 100px 0 60px 0;
  position: relative;
}

.final-cta-card {
  background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-subtle) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 56px 36px;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
}

.landing-footer {
  padding: 36px 0;
  border-top: 1px solid var(--border-color);
  margin-top: 40px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   17. Workbench Return Button (In Workbench Header)
   -------------------------------------------------------------------------- */

.workbench-home-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.18s ease;
  user-select: none;
}

.workbench-home-btn:hover {
  background: var(--bg-hover);
  color: var(--color-primary);
  border-color: var(--border-focus);
}

.brand-section.clickable-brand {
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--radius-md);
  transition: background-color 0.15s ease;
}

.brand-section.clickable-brand:hover {
  background-color: var(--bg-hover);
}

/* --------------------------------------------------------------------------
   18. Responsive Media Queries
   -------------------------------------------------------------------------- */

@media (max-width: 1100px) {
  .hero-title-main {
    font-size: 44px;
  }
  .big-idea-grid,
  .semantic-grid,
  .vis-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .standards-container,
  .source-container,
  .compare-layout,
  .privacy-banner,
  .about-contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .pqc-artifacts-triad {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .landing-nav-links {
    display: none; /* Collapsed on mobile to prioritize Brand & Launch CTA */
  }
  .hero-title-main {
    font-size: 32px;
  }
  .hero-triad {
    font-size: 16px;
    flex-direction: column;
    gap: 6px;
  }
  .hero-pipeline-track {
    flex-direction: column;
    gap: 16px;
  }
  .hero-pipeline-arrow {
    transform: rotate(90deg);
  }
  .big-idea-equation {
    flex-direction: column;
    gap: 8px;
  }
  .big-idea-grid,
  .semantic-grid,
  .vis-grid,
  .scope-grid,
  .compare-diff-list {
    grid-template-columns: 1fr;
  }
  .big-idea-card,
  .pqc-card,
  .privacy-banner,
  .about-card,
  .contact-card,
  .final-cta-card {
    padding: 24px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}