/* ============================================================================
   SCHUILING & SCHUILING — WORLD-CLASS EDITORIAL WEB DESIGN SYSTEM
   Default Native Archetype: Linear Violet (Dark Studio) & Bloomberg Precision
   Geen FOUC (Flash of Unstyled Content). Vanaf milliseconde nul direct in de
   hightech dark studio lay-out.
   ========================================================================== */

:root {
  /* -- Linear Violet & High-Tech Dark Studio Archetype -- */
  --bg-page: #08090A;
  --bg-surface: #0F1012;
  --bg-subtle: #15171A;
  --bg-muted: #1E2024;
  --bg-pill: #18191C;

  --text-primary: #F7F8F8;
  --text-secondary: #8A8F98;
  --text-tertiary: #62666D;
  --text-inverse: #08090A;

  --accent-brass: #5E6AD2;
  --accent-brass-hover: #7170FF;
  --accent-brass-subtle: rgba(94, 106, 210, 0.14);

  --border-delicate: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.15);

  --shadow-ambient: 0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-float: 0 12px 36px rgba(0, 0, 0, 0.7);
  --shadow-hover: 0 20px 48px rgba(0, 0, 0, 0.9);

  --font-serif: "Gilda Display", "Didot", "Bodoni MT", Georgia, serif;
  --font-sans: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --radius-xs: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-pill: 999px;

  --container-max: 1220px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 15px;
  background-color: var(--bg-page);
  color: var(--text-primary);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  line-height: 1.65;
  color: var(--text-primary);
  background: 
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(94, 106, 210, 0.12), transparent 70%),
    linear-gradient(180deg, #08090A 0%, #0C0D0E 100%);
  background-attachment: fixed;
  overflow-x: hidden;
  position: relative;
}

/* Subtiele achtergrond textuur */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.15;
  color: var(--text-primary);
  text-wrap: balance;
  overflow-wrap: break-word;
}

p, li, span, small {
  overflow-wrap: break-word;
}

/* Base text elements */
p {
  line-height: 1.7;
}

/* ==========================================================================
   Header: Luchtig, Glazig, Royaal
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8, 9, 10, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-delicate);
  height: 96px;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: inline-flex;
  align-items: center;
}

.header-logo {
  height: 68px;
  width: auto;
  max-width: 220px;
  display: block;
  filter: invert(1) brightness(1.2);
}

.main-nav {
  display: flex;
  gap: 3rem;
  align-items: center;
}

.main-nav a {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding: 0.4rem 0;
}

.main-nav a:hover {
  color: var(--text-primary);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: var(--accent-brass);
  transition: width 0.3s ease;
}

.main-nav a:hover::after {
  width: 100%;
}

.btn-header {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.42rem 1.05rem;
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-header:hover {
  background-color: var(--bg-subtle);
  border-color: var(--accent-brass);
  color: var(--accent-brass);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

/* Mobile Menu Hamburger Button */
.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  width: 44px;
  height: 44px;
  padding: 0;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  transition: all 0.25s ease;
}

.mobile-toggle:hover {
  background: var(--bg-subtle);
  border-color: var(--text-primary);
}

.mobile-toggle .bar {
  display: block;
  width: 18px;
  height: 1.5px;
  background-color: var(--text-primary);
  transition: transform 0.25s ease, opacity 0.25s ease;
  transform-origin: center;
}

.mobile-toggle.active .bar:first-child {
  transform: translateY(3.25px) rotate(45deg);
}

.mobile-toggle.active .bar:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

/* ==========================================================================
   Hero Section: Editorial Ruhe & Pure Klasse
   ========================================================================== */

.hero-section {
  padding: 6.5rem 2.5rem 5rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.hero-meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-delicate);
  padding: 0.45rem 1.2rem;
  border-radius: var(--radius-pill);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  box-shadow: var(--shadow-ambient);
  margin-bottom: 2.6rem;
}

.meta-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #5C7A58;
}

.hero-title {
  font-size: clamp(2.8rem, 2.2rem + 3.2vw, 4.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 1080px;
  margin-bottom: 2rem;
}

.hero-title .emphasis {
  font-style: italic;
  font-weight: 400;
  color: var(--accent-brass);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 8px;
}

.hero-sub {
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.3rem);
  font-weight: 300;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 820px;
  margin-bottom: 3.5rem;
}

.hero-sub strong {
  color: var(--text-primary);
  font-weight: 500;
}

.hero-actions {
  display: flex;
  gap: 1.6rem;
  align-items: center;
  margin-bottom: 5.5rem;
}

.btn-solid {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background-color: var(--accent-brass);
  color: #FFFFFF;
  padding: 1.05rem 2.6rem;
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  border-radius: var(--radius-pill);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-solid:hover {
  background-color: var(--accent-brass-hover);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(94, 106, 210, 0.5);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background-color: var(--bg-surface);
  color: var(--text-primary);
  padding: 1.05rem 2.6rem;
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-ambient);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-outline:hover {
  background-color: var(--bg-subtle);
  transform: translateY(-2px);
  border-color: var(--text-primary);
}

/* Stat Rail */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 2.8rem 2.4rem;
  box-shadow: var(--shadow-float);
  border: 1px solid var(--border-delicate);
}

.stat-item {
  padding: 0 2rem;
  border-right: 1px solid var(--border-delicate);
  display: flex;
  flex-direction: column;
}

.stat-item:last-child {
  border-right: none;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 1.8rem + 1.2vw, 3rem);
  line-height: 1;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.stat-label {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
}

/* ==========================================================================
   Sectie Headers & Structuur
   ========================================================================== */

.section-block {
  padding: 7rem 2.5rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.section-header {
  border-bottom: 1px solid var(--border-delicate);
  padding-bottom: 2.2rem;
  margin-bottom: 4rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.section-kicker {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-brass);
  margin-bottom: 0.8rem;
}

.section-title {
  font-size: clamp(2.2rem, 1.8rem + 1.6vw, 3.2rem);
  line-height: 1.15;
  color: var(--text-primary);
}

.section-intro {
  font-size: 0.98rem;
  font-weight: 300;
  color: var(--text-secondary);
  max-width: 500px;
  line-height: 1.75;
}

/* Utility: Visually Hidden for accessibility & CSS state radios */
.vh {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ==========================================================================
   Vierkwadranten Architectuur (Quad Matrix State Engine)
   ========================================================================== */

.quad {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 3.5rem;
  position: relative;
}

/* 4-kwadranten interactieve balk */
.quad__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}

.quad__cell {
  background: var(--bg-surface);
  border: 1px solid var(--border-delicate);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.4rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-ambient);
}

.quad__cell::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  transition: background 0.25s ease;
}

.quad__cell:hover {
  transform: translateY(-2px);
  border-color: var(--accent-brass);
  box-shadow: var(--shadow-float);
}

.quad__num {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.quad__name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.25;
}

.quad__cell small {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-top: 0.2rem;
}

/* Active status indicator op basis van :has() radio controls én .active classes */
.quad__cell.active,
.quad:has(#q-triad:checked) .quad__cell.q1,
.quad:has(#q-delphi:checked) .quad__cell.q2,
.quad:has(#q-mcts:checked) .quad__cell.q3,
.quad:has(#q-formal:checked) .quad__cell.q4 {
  background: var(--bg-subtle);
  border-color: var(--accent-brass);
  box-shadow: var(--shadow-float);
}

.quad__cell.active::before,
.quad:has(#q-triad:checked) .quad__cell.q1::before,
.quad:has(#q-delphi:checked) .quad__cell.q2::before,
.quad:has(#q-mcts:checked) .quad__cell.q3::before,
.quad:has(#q-formal:checked) .quad__cell.q4::before {
  background: var(--accent-brass);
}

.quad__cell.active .quad__num,
.quad:has(#q-triad:checked) .quad__cell.q1 .quad__num,
.quad:has(#q-delphi:checked) .quad__cell.q2 .quad__num,
.quad:has(#q-mcts:checked) .quad__cell.q3 .quad__num,
.quad:has(#q-formal:checked) .quad__cell.q4 .quad__num {
  color: var(--accent-brass);
}

/* Panelen container */
.quad__panels {
  position: relative;
  min-height: 320px;
}

.quad__panel {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-delicate);
  border-radius: var(--radius-lg);
  padding: 3.2rem 3rem;
  box-shadow: var(--shadow-ambient);
  animation: panelFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes panelFadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Zichtbaarheid actieve paneel via CSS :has() én .active fallback */
.quad__panel.active,
.quad:has(#q-triad:checked) .quad__panel[data-q="q-triad"],
.quad:has(#q-delphi:checked) .quad__panel[data-q="q-delphi"],
.quad:has(#q-mcts:checked) .quad__panel[data-q="q-mcts"],
.quad:has(#q-formal:checked) .quad__panel[data-q="q-formal"] {
  display: block;
}

.panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.6rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--border-delicate);
}

.panel__badge {
  font-family: var(--font-sans);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-brass);
  background: var(--bg-subtle);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-delicate);
}

.panel__method {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-tertiary);
}

.panel__title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.panel__lead {
  font-size: 1.05rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 2.2rem;
  max-width: 900px;
}

.panel__meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--border-delicate);
  background: var(--bg-subtle);
  padding: 1.6rem 2rem;
  border-radius: var(--radius-md);
  box-sizing: border-box;
  max-width: 100%;
}

.panel__meta-grid > div {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 0;
  max-width: 100%;
  overflow-wrap: break-word;
  word-break: break-word;
}

.panel__meta-grid strong {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.panel__meta-grid span {
  font-size: 0.88rem;
  color: var(--text-primary);
  line-height: 1.5;
  word-break: break-word;
  overflow-wrap: anywhere;
  hyphens: auto;
}

.panel__meta-grid code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
  color: var(--text-primary);
  background: var(--bg-surface);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--border-delicate);
  max-width: 100%;
  box-sizing: border-box;
  display: block;
  white-space: normal;
  word-break: break-all;
  overflow-wrap: anywhere;
}

/* ==========================================================================
   Verificatiemonitor Strip & Data Table
   ========================================================================== */

.verify-strip {
  background: var(--bg-surface);
  border: 1px solid var(--border-delicate);
  border-radius: var(--radius-lg);
  padding: 2rem 2.4rem;
  box-shadow: var(--shadow-ambient);
  margin-top: 1rem;
}

.verify-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.6rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--border-delicate);
}

.verify-title-group {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.verify-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--text-primary);
}

.provenance-tag {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
}

.provenance-tag .mono {
  font-family: "JetBrains Mono", monospace;
  color: var(--accent-brass);
}

.verify-table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

.data-table th,
.data-table td {
  padding: 1.1rem 1.2rem;
  border-bottom: 1px solid var(--border-delicate);
  word-break: normal;
  overflow-wrap: break-word;
}

.data-table thead th {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-delicate);
}

.data-table tbody th {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent-brass);
  width: 70px;
}

.data-table tbody tr:hover td {
  background: rgba(158, 116, 58, 0.03);
}

.status-token {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
}

.status-token.status--pass {
  background: rgba(34, 197, 94, 0.12);
  color: #16a34a;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

[data-theme="dark"] .status-token.status--pass {
  background: rgba(34, 197, 94, 0.18);
  color: #4ade80;
  border: 1px solid rgba(74, 222, 128, 0.35);
}

/* Klassieke pijler backup */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.pillar-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 3.5rem 3rem;
  display: flex;
  flex-direction: column;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-ambient);
  border: 1px solid var(--border-delicate);
  position: relative;
}

.pillar-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(158, 116, 58, 0.3);
}

.pillar-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.8rem;
}

.pillar-num {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--accent-brass);
}

.pillar-pill {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  background: var(--bg-subtle);
  padding: 0.25rem 0.8rem;
  border-radius: var(--radius-pill);
}

.pillar-title {
  font-size: 2.1rem;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.pillar-lead {
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin-bottom: 1.4rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-delicate);
}

.pillar-body {
  font-size: 0.98rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  flex-grow: 1;
}

.pillar-deliverables {
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border-delicate);
}

.pillar-deliverables li {
  position: relative;
  padding-left: 1.5rem;
  line-height: 1.6;
}

.pillar-deliverables li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-brass);
  font-size: 0.85rem;
}

.std-token {
  font-family: var(--font-sans);
  font-size: 0.84em;
  font-weight: 400;
  color: var(--text-tertiary);
}

/* ==========================================================================
   Portfolio / Domeinen
   ========================================================================== */

.domains-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.domain-card {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: 2.8rem 2.4rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-ambient);
  border: 1px solid var(--border-delicate);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.domain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-float);
  border-color: rgba(158, 116, 58, 0.25);
}

.domain-badge {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-brass);
  margin-bottom: 1.2rem;
}

.domain-title {
  font-size: 1.65rem;
  color: var(--text-primary);
  margin-bottom: 0.8rem;
}

.domain-text {
  font-size: 0.94rem;
  font-weight: 300;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  flex-grow: 1;
}

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

.domain-tag {
  font-size: 0.78rem;
  font-weight: 400;
  padding: 0.35rem 0.9rem;
  background-color: var(--bg-pill);
  border-radius: var(--radius-pill);
  color: var(--text-secondary);
  width: fit-content;
}

/* ==========================================================================
   Werkwijze & Engineering Flow (Fasen 01 t/m 04)
   ========================================================================== */

.principles-flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.8rem;
}

.flow-step {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: 2.6rem 2.2rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-ambient);
  border: 1px solid var(--border-delicate);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.flow-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-float);
  border-color: rgba(158, 116, 58, 0.3);
}

.flow-step-num {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-brass);
  margin-bottom: 1.2rem;
}

.flow-step-title {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 0.9rem;
  line-height: 1.2;
}

.flow-step-text {
  font-size: 0.92rem;
  font-weight: 300;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  flex-grow: 1;
}

.flow-deliverable {
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--text-tertiary);
  padding-top: 1rem;
  border-top: 1px solid var(--border-delicate);
  line-height: 1.4;
}

/* ==========================================================================
   Executive Contact: Exclusieve Salon Kaart
   ========================================================================== */

.contact-box {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 5.5rem 4.5rem;
  box-shadow: var(--shadow-float);
  border: 1px solid var(--border-delicate);
  position: relative;
}

.contact-eyebrow {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-brass);
  margin-bottom: 1.2rem;
}

.contact-headline {
  font-size: clamp(2.4rem, 2rem + 1.4vw, 3.4rem);
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 1.4rem;
}

.contact-description {
  font-size: 1.18rem;
  font-weight: 300;
  line-height: 1.85;
  color: var(--text-secondary);
  max-width: 820px;
  margin-bottom: 3.5rem;
}

.contact-details-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.2rem;
  border-top: 1px solid var(--border-delicate);
  border-bottom: 1px solid var(--border-delicate);
  padding: 2.6rem 0;
  margin-bottom: 3.5rem;
}

.cd-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.6rem;
}

.cd-value {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.5;
}

.contact-actions {
  display: flex;
  align-items: center;
  gap: 2.4rem;
}

/* ==========================================================================
   Voettekst: Rust & Ruimte
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--border-delicate);
  background: var(--bg-surface);
  padding: 6rem 2.5rem 3rem;
}

.footer-top {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 2.6fr;
  gap: 5rem;
  margin-bottom: 4rem;
}

.footer-logo {
  height: 68px;
  width: auto;
  max-width: 220px;
  margin-bottom: 1.6rem;
  display: block;
}

.footer-desc {
  font-size: 0.92rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 360px;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.2rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  font-size: 0.85rem;
}

.footer-head {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.footer-col a {
  color: var(--text-secondary);
}

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

.footer-bottom {
  max-width: var(--container-max);
  margin: 0 auto;
  border-top: 1px solid var(--border-delicate);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

/* ==========================================================================
   Responsiviteit & Mobile-First Excellence
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-section { padding: 5rem 2rem 3.5rem; }
  .section-block { padding: 5.5rem 2rem; }
  .pillars-grid { grid-template-columns: 1fr; gap: 2rem; }
  .domains-grid { grid-template-columns: repeat(2, 1fr); gap: 1.6rem; }
  .principles-flow-grid { grid-template-columns: repeat(2, 1fr); gap: 1.6rem; }
  .contact-details-grid { grid-template-columns: repeat(2, 1fr); gap: 1.8rem; }
  .footer-top { grid-template-columns: 1fr; gap: 3.5rem; }
}

@media (max-width: 860px) {
  .site-header { height: 80px; }
  .nav-container { padding: 0 1.5rem; }
  .header-logo { height: 52px; }

  /* Mobile Drawer Navigation */
  .mobile-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: rgba(251, 249, 245, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-delicate);
    padding: 2.2rem 1.8rem 2.8rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.6rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
    box-shadow: 0 16px 36px rgba(40, 32, 20, 0.08);
  }

  .main-nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .main-nav a {
    font-size: 1.15rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    width: 100%;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border-delicate);
  }

  .main-nav a::after {
    display: none;
  }

  .hero-section {
    padding: 3.5rem 1.5rem 3rem;
  }

  .hero-meta-pill {
    margin-bottom: 1.8rem;
    padding: 0.4rem 1rem;
    font-size: 0.7rem;
    max-width: 100%;
    line-height: 1.4;
  }

  .hero-title {
    font-size: 2.5rem;
    line-height: 1.15;
    margin-bottom: 1.4rem;
  }

  .hero-sub {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 2.5rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 0.9rem;
    margin-bottom: 3.5rem;
  }

  .btn-solid, .btn-outline {
    justify-content: center;
    padding: 1rem 1.8rem;
    font-size: 0.88rem;
    text-align: center;
    width: 100%;
  }

  /* Stats Strip op mobiel: nette 2x2 grid */
  .stats-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.6rem 1.2rem;
    padding: 1.8rem 1.4rem;
    border-radius: var(--radius-md);
  }

  .stat-item {
    padding: 0;
    border-right: none;
  }

  .stat-num {
    font-size: 2.1rem;
    margin-bottom: 0.3rem;
  }

  .stat-label {
    font-size: 0.72rem;
    line-height: 1.4;
  }

  /* Section Headers */
  .section-block {
    padding: 4.5rem 1.5rem;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.2rem;
    padding-bottom: 1.6rem;
    margin-bottom: 2.8rem;
  }

  .section-title {
    font-size: 2.2rem;
  }

  .section-intro {
    max-width: 100%;
    font-size: 0.92rem;
  }

  /* Quad Matrix Segment Control op Mobiel */
  .quad {
    gap: 1.2rem;
  }

  .quad__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    position: sticky;
    top: 76px;
    z-index: 100;
    background: rgba(8, 9, 10, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 0.6rem 0;
    border-radius: var(--radius-md);
  }

  .quad__cell {
    padding: 0.75rem 0.5rem;
    align-items: center;
    text-align: center;
    gap: 0.15rem;
    border-radius: var(--radius-xs);
  }

  .quad__cell small {
    display: none; /* Verberg lange subtekst in mobiele tab bar */
  }

  .quad__num {
    font-size: 0.65rem;
    letter-spacing: 0.05em;
  }

  .quad__name {
    font-size: 0.82rem;
    font-family: var(--font-sans);
    font-weight: 600;
  }

  .quad__panel {
    padding: 1.8rem 1.4rem;
    border-radius: var(--radius-md);
  }

  .panel__title {
    font-size: 1.7rem;
  }

  .panel__lead {
    font-size: 0.95rem;
  }

  .panel__meta-grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
    padding: 1.2rem 1.4rem;
  }

  .verify-strip {
    padding: 1.6rem 1.2rem;
  }

  .verify-title {
    font-size: 1.15rem;
  }

  .data-table th,
  .data-table td {
    padding: 0.8rem 0.6rem;
    font-size: 0.82rem;
  }

  /* Pillar & Domain cards */
  .pillar-card {
    padding: 2.2rem 1.8rem;
    border-radius: var(--radius-md);
  }

  .pillar-title {
    font-size: 1.75rem;
  }

  .domains-grid {
    grid-template-columns: 1fr;
    gap: 1.4rem;
  }

  .domain-card {
    padding: 2.2rem 1.8rem;
  }

  /* Werkwijze & Engineering Flow op mobiel */
  .principles-flow-grid {
    grid-template-columns: 1fr;
    gap: 1.4rem;
  }

  .flow-step {
    padding: 2.2rem 1.8rem;
  }

  /* Showcase Card op mobiel */
  .showcase-card {
    padding: 2rem 1.4rem !important;
  }

  .showcase-card > div:nth-child(2) {
    grid-template-columns: 1fr !important;
  }

  /* Contact sectie */
  .contact-box {
    padding: 2.6rem 1.6rem;
    border-radius: var(--radius-md);
  }

  .contact-headline {
    font-size: 2.1rem;
  }

  .contact-description {
    font-size: 1.02rem;
    margin-bottom: 2.2rem;
  }

  .contact-details-grid {
    grid-template-columns: 1fr;
    gap: 1.4rem;
    padding: 1.8rem 0;
    margin-bottom: 2.4rem;
  }

  .contact-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 1.2rem;
  }

  .contact-actions .btn-solid {
    width: 100%;
  }

  /* Footer */
  .site-footer {
    padding: 4rem 1.5rem 2rem;
  }

  .footer-top {
    gap: 2.5rem;
    margin-bottom: 2.8rem;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.8rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .site-header { height: 74px; }
  .header-logo { height: 46px; }
  .btn-header { padding: 0.55rem 1.2rem; font-size: 0.74rem; }
  .hero-title { font-size: 2.15rem; }
  .stats-strip { grid-template-columns: 1fr; gap: 1.4rem; }
  .section-title { font-size: 1.9rem; }
  .quad__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 0.35rem;
  }
  .quad__cell {
    padding: 0.6rem 0.3rem;
  }
  .quad__name {
    font-size: 0.72rem;
  }
  .quad__num {
    font-size: 0.6rem;
  }
  .quad__panel { padding: 1.6rem 1.1rem; }
  .panel__title { font-size: 1.45rem; }
  .panel__meta-grid { grid-template-columns: 1fr; gap: 1rem; padding: 1.1rem 1rem; }
  .pillar-title { font-size: 1.5rem; }
  .pillar-card { padding: 1.8rem 1.4rem; }
  .domain-card { padding: 1.8rem 1.4rem; }
}