/* ═══════════════════════════════════════════════════════
   STYLUS DESIGN — BOUWBROCHURE LANDING PAGE
   Design System: Navy / Amber / Off-white
   Typography: Playfair Display (headlines) · Inter (body)
   Grid: 8px base unit · Mobile-first responsive
═══════════════════════════════════════════════════════ */

/* ────────────────────────────────────────────
   DESIGN TOKENS
──────────────────────────────────────────── */
:root {
  /* Colors */
  --color-navy:        #1A2B4A;
  --color-navy-light:  #243a61;
  --color-navy-dark:   #111d31;
  --color-amber:       #E8821A;
  --color-amber-light: #f0a050;
  --color-amber-dark:  #c46a10;
  --color-bg:          #F7F6F2;
  --color-white:       #ffffff;
  --color-grey-100:    #f0efe9;
  --color-grey-200:    #e4e3dc;
  --color-grey-400:    #9e9b90;
  --color-grey-600:    #6b6860;
  --color-grey-800:    #3a3830;
  --color-error:       #d32f2f;
  --color-success:     #2e7d32;

  /* Typography */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing (8px grid) */
  --space-1:  8px;
  --space-2:  16px;
  --space-3:  24px;
  --space-4:  32px;
  --space-5:  40px;
  --space-6:  48px;
  --space-8:  64px;
  --space-10: 80px;
  --space-12: 96px;
  --space-16: 128px;

  /* Container */
  --container-max: 1200px;
  --container-pad: var(--space-3);

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26,43,74,0.08), 0 1px 2px rgba(26,43,74,0.06);
  --shadow-md: 0 4px 16px rgba(26,43,74,0.10), 0 2px 6px rgba(26,43,74,0.07);
  --shadow-lg: 0 8px 32px rgba(26,43,74,0.14), 0 4px 12px rgba(26,43,74,0.10);

  /* Transitions */
  --transition: 0.2s ease;
}

/* ────────────────────────────────────────────
   RESET & BASE
──────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-grey-800);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font: inherit;
}

/* ────────────────────────────────────────────
   UTILITIES
──────────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
}

/* ────────────────────────────────────────────
   TYPOGRAPHY SCALE
──────────────────────────────────────────── */
.section-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-amber);
  margin-bottom: var(--space-2);
}

.section-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.section-heading--light {
  color: var(--color-white);
}

.section-body {
  font-size: 1.0625rem;
  color: var(--color-grey-600);
  max-width: 600px;
  margin-bottom: var(--space-4);
}

.section-body--light {
  color: rgba(255,255,255,0.80);
}

.section-body--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-header-center {
  text-align: center;
  margin-bottom: var(--space-8);
}

/* ────────────────────────────────────────────
   BUTTONS
──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  font-family: var(--font-sans);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 3px solid var(--color-amber);
  outline-offset: 3px;
}

.btn:active {
  transform: translateY(1px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--color-amber);
  color: var(--color-white);
  border-color: var(--color-amber);
  box-shadow: 0 2px 8px rgba(232,130,26,0.30);
}

.btn-primary:hover {
  background-color: var(--color-amber-dark);
  border-color: var(--color-amber-dark);
  box-shadow: 0 4px 16px rgba(232,130,26,0.40);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn-ghost:hover {
  background-color: var(--color-navy);
  color: var(--color-white);
}

.btn-full {
  width: 100%;
}

/* ────────────────────────────────────────────
   HEADER
──────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-grey-200);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--space-3);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  text-decoration: none;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-navy);
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-navy);
}

.logo--light .logo-mark {
  background-color: var(--color-amber);
}

.logo--light .logo-text {
  color: var(--color-white);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-grey-600);
  transition: color var(--transition);
}

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

/* Hide nav links on small screens, keep CTA */
@media (max-width: 640px) {
  .nav-link:not(.btn) {
    display: none;
  }
}

/* ────────────────────────────────────────────
   HERO
──────────────────────────────────────────── */
.hero {
  background-color: var(--color-navy);
  padding: var(--space-12) 0 var(--space-10);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
  }
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-amber);
  margin-bottom: var(--space-2);
}

.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-white);
  margin-bottom: var(--space-3);
}

.hero-subline {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.78);
  max-width: 520px;
  margin-bottom: var(--space-5);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-image-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background-color: var(--color-navy-light);
  width: 100%;
  max-width: 560px;
  min-height: 300px;
}

.hero-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-xl);
}

.hero-image-fallback {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  color: rgba(255,255,255,0.4);
  font-size: 0.875rem;
}

.hero-image-wrap.hero-image-placeholder .hero-image-fallback {
  display: flex;
}

.hero-image-wrap.hero-image-placeholder .hero-image-fallback .material-symbols-outlined {
  font-size: 4rem;
  opacity: 0.5;
}

/* ────────────────────────────────────────────
   TENSION STRIP
──────────────────────────────────────────── */
.tension-strip {
  background-color: var(--color-grey-100);
  border-top: 3px solid var(--color-amber);
  padding: var(--space-8) 0;
}

.tension-intro {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-5);
  text-align: center;
}

.tension-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .tension-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .tension-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.tension-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.tension-icon {
  font-size: 2rem;
  color: var(--color-amber);
}

.tension-item p {
  font-size: 0.9375rem;
  color: var(--color-grey-600);
  line-height: 1.55;
}

/* ────────────────────────────────────────────
   EXPERTISE / POSITIONING
──────────────────────────────────────────── */
.expertise {
  padding: var(--space-12) 0;
  background-color: var(--color-bg);
}

.expertise-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: start;
}

@media (min-width: 768px) {
  .expertise-inner {
    grid-template-columns: 3fr 2fr;
    align-items: center;
  }
}

.expertise-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.expertise-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: 0.9375rem;
  color: var(--color-grey-800);
}

.list-icon {
  color: var(--color-amber);
  flex-shrink: 0;
  margin-top: 2px;
}

.expertise-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
}

.stat-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-3);
  text-align: center;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  border: 1px solid var(--color-grey-200);
}

.stat-card--accent {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1;
}

.stat-card--accent .stat-number {
  color: var(--color-amber);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-grey-600);
  text-align: center;
  line-height: 1.4;
}

.stat-card--accent .stat-label {
  color: rgba(255,255,255,0.75);
}

/* ────────────────────────────────────────────
   CASE STUDY
──────────────────────────────────────────── */
.case-study {
  padding: var(--space-12) 0;
  background-color: var(--color-grey-100);
}

.case-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 768px) {
  .case-inner {
    grid-template-columns: 5fr 6fr;
  }
}

.case-image-stack {
  position: relative;
  padding-bottom: var(--space-6);
}

.case-image-main,
.case-image-secondary {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-grey-200);
}

.case-image-main {
  box-shadow: var(--shadow-lg);
}

.case-image-secondary {
  position: absolute;
  bottom: 0;
  right: -24px;
  width: 55%;
  box-shadow: var(--shadow-md);
  border: 4px solid var(--color-white);
}

.case-image-main img,
.case-image-secondary img {
  width: 100%;
  object-fit: cover;
}

.image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}

.image-placeholder-content {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 200px;
  color: var(--color-grey-400);
}

.image-placeholder-content .material-symbols-outlined {
  font-size: 3rem;
}

.case-image-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.case-image-strip img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  object-fit: cover;
}

.case-quote {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-style: italic;
  color: var(--color-navy);
  border-left: 4px solid var(--color-amber);
  padding-left: var(--space-3);
  margin: var(--space-4) 0;
  line-height: 1.6;
}

.case-quote cite {
  display: block;
  font-style: normal;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-grey-600);
  margin-top: var(--space-1);
}

.case-results {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.case-results li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9375rem;
  color: var(--color-grey-800);
}

.result-highlight {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-amber);
  min-width: 56px;
  flex-shrink: 0;
}

/* ────────────────────────────────────────────
   PROCESS / WERKWIJZE
──────────────────────────────────────────── */
.process {
  padding: var(--space-12) 0;
  background-color: var(--color-bg);
}

.process-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  counter-reset: steps;
}

@media (min-width: 768px) {
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
  }
}

@media (min-width: 1024px) {
  .process-steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

.process-step {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--color-navy);
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.step-number {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-amber);
  line-height: 1;
  margin-bottom: var(--space-2);
  opacity: 0.9;
}

.step-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-2);
}

.step-body {
  font-size: 0.9375rem;
  color: var(--color-grey-600);
  line-height: 1.6;
}

/* ────────────────────────────────────────────
   TRUST BAR
──────────────────────────────────────────── */
.trust-bar {
  background-color: var(--color-navy);
  padding: var(--space-6) 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .trust-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.trust-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  color: var(--color-white);
}

.trust-icon {
  font-size: 2rem;
  color: var(--color-amber);
  flex-shrink: 0;
  margin-top: 2px;
}

.trust-item strong {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 2px;
}

.trust-item span {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.65);
}

/* ────────────────────────────────────────────
   CONTACT / CTA
──────────────────────────────────────────── */
.contact {
  background-color: var(--color-navy-dark);
  padding: var(--space-12) 0;
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: start;
}

@media (min-width: 768px) {
  .contact-inner {
    grid-template-columns: 5fr 6fr;
    align-items: center;
  }
}

.contact-benefits {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.contact-benefits li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.80);
}

.contact-benefits .material-symbols-outlined {
  color: var(--color-amber);
  flex-shrink: 0;
  font-size: 1.25rem;
  margin-top: 2px;
}

/* Form */
.contact-form-wrap {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  box-shadow: var(--shadow-lg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-navy);
}

.form-label span {
  color: var(--color-amber);
}

.form-input {
  padding: 10px 14px;
  border: 1.5px solid var(--color-grey-200);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: var(--color-grey-800);
  background-color: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px rgba(26,43,74,0.10);
}

.form-input.is-invalid {
  border-color: var(--color-error);
}

.form-textarea {
  resize: vertical;
  min-height: 96px;
}

.form-error {
  font-size: 0.8125rem;
  color: var(--color-error);
  min-height: 18px;
}

.form-consent {
  margin-top: var(--space-1);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--color-grey-600);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--color-navy);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.inline-link {
  color: var(--color-navy);
  text-decoration: underline;
}

.form-disclaimer {
  font-size: 0.8125rem;
  color: var(--color-grey-400);
  text-align: center;
  margin-top: var(--space-1);
}

/* Success state */
.form-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-6) var(--space-4);
  gap: var(--space-2);
}

.success-icon {
  font-size: 3.5rem;
  color: var(--color-success);
}

.form-success h3 {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-navy);
}

.form-success p {
  font-size: 0.9375rem;
  color: var(--color-grey-600);
  max-width: 360px;
}

/* ────────────────────────────────────────────
   FOOTER
──────────────────────────────────────────── */
.site-footer {
  background-color: var(--color-navy-dark);
  color: rgba(255,255,255,0.70);
  padding-top: var(--space-10);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid rgba(255,255,255,0.10);
}

@media (min-width: 640px) {
  .footer-inner {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-tagline {
  margin-top: var(--space-2);
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
}

.footer-address {
  font-style: normal;
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.65);
  display: flex;
  align-items: flex-start;
  gap: var(--space-1);
}

.footer-address .material-symbols-outlined {
  font-size: 1.125rem;
  margin-top: 3px;
  color: var(--color-amber);
  flex-shrink: 0;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.875rem;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
  text-decoration: none;
}

.footer-link:hover {
  color: var(--color-white);
}

.footer-link .material-symbols-outlined {
  font-size: 1.125rem;
  color: var(--color-amber);
}

.footer-legal {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer-legal p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.45);
}

.footer-legal nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-2);
}

.footer-link--small {
  font-size: 0.8125rem;
}

.footer-bottom {
  padding: var(--space-3) 0;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.35);
  text-align: center;
}

/* ────────────────────────────────────────────
   SCROLL ANIMATION HELPERS
──────────────────────────────────────────── */
.fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ────────────────────────────────────────────
   PRINT STYLES
──────────────────────────────────────────── */
@media print {
  .site-header,
  .hero-actions,
  #contact,
  .trust-bar {
    display: none;
  }
}