/* ==========================================
   QUANTUM WORKFLOWS - EDITORIAL SECTIONS & LAYOUT SHELLS
   ========================================== */

/* ------------------------------------------
   1. NAVIGATION
   ------------------------------------------ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 90;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base);
}

.header.scrolled {
  background-color: rgba(245, 243, 238, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.header-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
  padding: var(--space-2) 0;
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.mobile-menu-btn {
  display: none;
  padding: var(--space-2);
  color: var(--color-text-primary);
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }
}

/* Mobile Drawer Overlay */
.mobile-drawer {
  position: fixed;
  inset: 0;
  background-color: rgba(29, 37, 33, 0.6);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-drawer.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 320px;
  max-width: 85vw;
  background-color: var(--color-surface);
  border-left: 1px solid var(--color-border);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-base);
}

.mobile-drawer.is-open .mobile-drawer-panel {
  transform: translateX(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav-link {
  font-family: var(--font-sans);
  font-size: var(--fs-lg);
  font-weight: 500;
  color: var(--color-text-primary);
}

/* ------------------------------------------
   2. HERO SECTION
   ------------------------------------------ */
.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-12);
  align-items: flex-start;
}

.hero-text-col {
  max-width: 660px;
}

.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 4.8vw, 4rem);
  font-weight: 500;
  line-height: 1.12;
  margin-top: var(--space-4);
  margin-bottom: var(--space-6);
  color: var(--color-text-primary);
  letter-spacing: -0.025em;
}

.hero-subheadline {
  font-family: var(--font-sans);
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-8);
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.hero-trust-line {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.trust-line-marker {
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* ------------------------------------------
   3. ARCHITECTURAL PROCESS DIAGRAM (HERO VISUAL)
   ------------------------------------------ */
.diagram-container {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.diagram-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.diagram-header-title {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-primary);
}

.diagram-flow {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.diagram-step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.diagram-step-active {
  background-color: var(--color-surface);
  border-color: var(--color-text-primary);
}

.diagram-num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  padding-top: 2px;
}

.diagram-step-active .diagram-num {
  color: var(--color-accent);
}

.diagram-content {
  flex: 1;
}

.diagram-step-title {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.diagram-step-desc {
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.diagram-connector-line {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 24px;
  position: relative;
}

.diagram-connector-line::before {
  content: '';
  width: 1px;
  height: 100%;
  background-color: var(--color-border);
}

.diagram-arrow {
  position: absolute;
  color: var(--color-text-muted);
  font-size: 10px;
  background-color: var(--color-surface);
  padding: 0 2px;
}

@media (max-width: 960px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .hero-text-col {
    max-width: 100%;
  }
}

/* ------------------------------------------
   4. SECTION WRAPPERS (CONTAINERS)
   ------------------------------------------ */
.problem-card, .service-card, .process-step-card, .portfolio-card, .tech-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.problem-card, .service-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--space-8);
}

.service-card-top {
  display: flex;
  flex-direction: column;
  height: 100%;
  justify-content: space-between;
}

.capability-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-surface-muted);
}

.capability-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-text-body);
  line-height: 1.5;
}

.capability-bullet {
  color: var(--color-accent);
  font-weight: 600;
}

/* ------------------------------------------
   5. CONSULTING PROCESS TIMELINE
   ------------------------------------------ */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  position: relative;
}

.process-step-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  position: relative;
  transition: border-color var(--transition-fast);
}

.process-step-card:hover {
  border-color: var(--color-text-primary);
}

.process-step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-surface-muted);
}

.process-step-num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-accent);
}

.process-step-phase {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.process-step-title {
  font-family: var(--font-serif);
  font-size: var(--fs-lg);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  line-height: 1.3;
}

.process-step-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-body);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.process-output-box {
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px dashed var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.725rem;
  line-height: 1.4;
}

.process-output-label {
  color: var(--color-accent);
  font-weight: 500;
  margin-right: 4px;
}

.process-output-text {
  color: var(--color-text-primary);
  font-weight: 500;
}

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

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

/* ------------------------------------------
   6. CASE STUDY & PORTFOLIO LAYOUT
   ------------------------------------------ */
.case-study-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-8);
  margin-bottom: var(--space-8);
  transition: border-color var(--transition-fast);
}

.case-study-card:hover {
  border-color: var(--color-text-primary);
}

.case-study-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-10);
  align-items: flex-start;
}

.case-study-num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-accent);
}

.case-study-category {
  font-family: var(--font-mono);
  font-size: 0.725rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.case-study-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.5vw, 1.85rem);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-top: var(--space-2);
  margin-bottom: var(--space-3);
}

.case-study-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-body);
  line-height: 1.65;
  margin-bottom: var(--space-6);
}

.process-flow-box {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-4) var(--space-5);
  margin-top: var(--space-4);
}

.process-flow-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.process-flow-steps {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--color-text-primary);
}

.process-flow-steps span {
  background-color: var(--color-surface);
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.case-study-subtitle {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
}

.capability-list-sm {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  font-size: var(--fs-xs);
  color: var(--color-text-body);
}

.capability-list-sm li {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  line-height: 1.4;
}

.tech-tags-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.case-study-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-surface-muted);
}

.next-system-banner {
  background-color: var(--color-bg);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-8);
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

@media (max-width: 900px) {
  .case-study-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .capability-list-sm {
    grid-template-columns: 1fr;
  }
}

/* ------------------------------------------
   7. TECHNOLOGY CAPABILITY DIRECTORY
   ------------------------------------------ */
.tech-directory-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.tech-directory-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  transition: border-color var(--transition-fast);
}

.tech-directory-card:hover {
  border-color: var(--color-text-primary);
}

.tech-directory-meta {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.tech-directory-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-body);
  line-height: 1.6;
  margin-top: var(--space-4);
}

.tech-closing-box {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-6) var(--space-8);
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

@media (max-width: 768px) {
  .tech-directory-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .tech-directory-grid {
    grid-template-columns: 1fr;
  }
}

/* ------------------------------------------
   8. ABOUT PRINCIPLES & AUDIT FORM
   ------------------------------------------ */
.principle-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-6);
  height: 100%;
}

.principle-num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.principle-title {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.principle-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
}

.audit-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.audit-step-card {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: var(--space-5);
}

.audit-step-num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.required-star {
  color: var(--color-accent);
  font-weight: bold;
}

@media (max-width: 860px) {
  .audit-steps-grid {
    grid-template-columns: 1fr;
  }
}

.card.is-submitted {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
  min-height: 100%;
}

.audit-success-state {
  text-align: center;
  padding: 2rem 1rem;
  margin: auto 0;
  width: 100%;
}

.audit-success-icon {
  width: 48px;
  height: 48px;
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: #059669;
}

/* ------------------------------------------
   9. FOOTER
   ------------------------------------------ */
.footer {
  background-color: var(--color-dark);
  color: var(--color-text-inverse);
  padding-top: var(--space-12);
  padding-bottom: var(--space-8);
  border-top: 1px solid var(--color-border-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand-title {
  font-family: var(--font-serif);
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--color-text-inverse);
  margin-bottom: var(--space-1);
}

.footer-brand-tag {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
  display: block;
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--fs-sm);
}

.footer a {
  color: #D9D5CE;
  transition: color var(--transition-fast);
  text-decoration: none;
}

.footer a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: #A39F98;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
}