:root {
  /* Visual Identity Palette: European Infrastructure Renewal */
  --color-deep-forest-ink: #0a231f; /* Primary dark structural tone */
  --color-midnight-teal: #0d3b36;   /* Navigation, headings, deep surfaces */
  --color-electric-mint: #00e5a3;   /* Primary interactive accent */
  --color-glacier-cyan: #bdf2f6;    /* Technical highlights */
  --color-soft-lilac: #d6cff9;      /* Secondary visual accent */
  --color-warm-terracotta: #e07a5f; /* Restrained maintenance/repair accent */
  --color-mist-sage: #d1e2da;       /* Soft background panels */
  --color-porcelain-cream: #f7f9f8; /* Primary light background */
  --color-graphite-slate: #4a5c59;  /* Body text / secondary info */
  --color-white: #ffffff;
  
  /* Spacing Scale */
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-40: 40px;
  --space-64: 64px;
  
  /* Radii for Soft Modern */
  --radius-small: 12px;
  --radius-medium: 16px;
  --radius-large: 24px;
  --radius-pill: 9999px;
  
  /* Shadows for Soft Modern */
  --shadow-micro: 0 4px 12px rgba(10, 35, 31, 0.04), 0 1px 3px rgba(10, 35, 31, 0.02);
  --shadow-hover: 0 16px 40px rgba(10, 35, 31, 0.08), 0 4px 12px rgba(10, 35, 31, 0.04);
  
  /* Transitions */
  --transition-smooth: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  min-width: 0; /* Flex/Grid child reflow support */
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-graphite-slate);
  background-color: var(--color-porcelain-cream);
  scroll-behavior: smooth;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: auto;
}

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

a {
  color: var(--color-midnight-teal);
  text-decoration: none;
  transition: color var(--transition-smooth);
}

a:hover {
  color: var(--color-electric-mint);
}

/* Accessibility */
:focus-visible {
  outline: 3px solid var(--color-electric-mint);
  outline-offset: 2px;
  border-radius: 4px;
}

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

/* Typography */
h1, h2, h3, h4 {
  color: var(--color-deep-forest-ink);
  line-height: 1.2;
  font-weight: 700;
  overflow-wrap: anywhere;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: var(--space-24); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); margin-bottom: var(--space-24); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); margin-bottom: var(--space-16); }
p { margin-bottom: var(--space-16); }
strong { color: var(--color-deep-forest-ink); }

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-24);
}

.section {
  padding: var(--space-64) 0;
}

.section-light {
  background-color: var(--color-white);
  border-radius: var(--radius-large);
  margin: var(--space-24) 0;
  box-shadow: var(--shadow-micro);
  padding: var(--space-64) var(--space-24);
}

/* Header */
.site-header {
  background-color: rgba(247, 249, 248, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-mist-sage);
  position: relative; /* Not sticky */
  z-index: 100;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  font-weight: 700;
  color: var(--color-deep-forest-ink);
  font-size: 1.125rem;
  overflow-wrap: anywhere;
}

.brand-icon {
  width: 32px;
  height: 32px;
  fill: none;
  stroke: var(--color-electric-mint);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.nav-container {
  display: flex;
  align-items: center;
  gap: var(--space-24);
}

.main-nav {
  display: flex;
  gap: var(--space-24);
}

.nav-link {
  color: var(--color-midnight-teal);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}

.nav-link[aria-current="page"] {
  color: var(--color-deep-forest-ink);
}

.nav-link[aria-current="page"]::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-electric-mint);
  border-radius: var(--radius-pill);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-24);
  background-color: var(--color-mist-sage);
  color: var(--color-deep-forest-ink);
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: all var(--transition-smooth);
  text-align: center;
}

.btn-primary {
  background-color: var(--color-electric-mint);
}

.btn-primary:hover {
  background-color: #00cf93; /* Darker mint */
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 229, 163, 0.3);
  color: var(--color-deep-forest-ink);
}

.btn-secondary {
  background-color: var(--color-soft-lilac);
}

.btn-secondary:hover {
  background-color: #c4baec;
  transform: translateY(-2px);
  color: var(--color-deep-forest-ink);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-8);
  color: var(--color-deep-forest-ink);
}

.mobile-toggle svg {
  width: 24px;
  height: 24px;
}

@media (max-width: 900px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-porcelain-cream);
    flex-direction: column;
    padding: var(--space-24);
    border-bottom: 1px solid var(--color-mist-sage);
    box-shadow: var(--shadow-micro);
  }

  .main-nav.is-active {
    display: flex;
  }

  .mobile-toggle {
    display: block;
  }
  
  .header-inner {
    height: 52px;
  }
}

/* Hero Section */
.hero {
  position: relative;
  padding: var(--space-64) 0;
  background: radial-gradient(circle at top right, var(--color-glacier-cyan) 0%, transparent 60%),
              radial-gradient(circle at bottom left, var(--color-soft-lilac) 0%, transparent 60%);
  border-radius: var(--radius-large);
  margin: var(--space-24) var(--space-24);
  box-shadow: var(--shadow-micro);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(10,35,31,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10,35,31,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-tagline {
  display: inline-block;
  padding: var(--space-4) var(--space-12);
  background-color: var(--color-mist-sage);
  color: var(--color-midnight-teal);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-16);
}

.hero-text {
  font-size: 1.25rem;
  color: var(--color-graphite-slate);
  margin-bottom: var(--space-40);
}

/* Hard Separation: Image */
.hero-visual {
  margin-top: var(--space-40);
  border-radius: var(--radius-medium);
  overflow: hidden;
  box-shadow: var(--shadow-micro);
  position: relative;
  z-index: 1;
}

.hero-visual img {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
  border-radius: var(--radius-medium);
}

/* Soft Modern Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-40);
}

.card {
  background-color: var(--color-white);
  border-radius: var(--radius-large);
  padding: var(--space-24);
  box-shadow: var(--shadow-micro);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.card-image-wrap {
  border-radius: var(--radius-medium);
  overflow: hidden;
  flex-shrink: 0;
}

.card-image-wrap img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.card-content {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.25rem;
  color: var(--color-midnight-teal);
  margin-bottom: var(--space-8);
}

.card-excerpt {
  color: var(--color-graphite-slate);
  margin-bottom: var(--space-24);
  flex-grow: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  border-top: 1px solid var(--color-mist-sage);
  padding-top: var(--space-16);
}

.card-tag {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-warm-terracotta);
  background-color: rgba(224, 122, 95, 0.1);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-pill);
}

.card-link {
  font-weight: 600;
  color: var(--color-deep-forest-ink);
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
}

.card-link::after {
  content: '→';
  transition: transform var(--transition-smooth);
}

.card-link:hover::after {
  transform: translateX(4px);
}

/* Article / Topic Page Styling */
.article-header {
  margin-bottom: var(--space-64);
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.article-hero-image {
  margin: var(--space-40) 0;
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-micro);
  overflow: hidden;
}

.article-hero-image img {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1.125rem;
}

.article-body h2 {
  margin-top: var(--space-64);
  color: var(--color-midnight-teal);
}

.article-body h3 {
  margin-top: var(--space-40);
}

.article-body p {
  margin-bottom: var(--space-24);
}

.article-body ul {
  margin-bottom: var(--space-24);
  padding-left: var(--space-24);
  list-style-type: square;
}

.article-body li {
  margin-bottom: var(--space-8);
}

.info-panel {
  background-color: var(--color-mist-sage);
  border-radius: var(--radius-medium);
  padding: var(--space-24);
  margin: var(--space-40) 0;
  display: flex;
  gap: var(--space-16);
  align-items: flex-start;
}

.info-panel svg {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  fill: none;
  stroke: var(--color-deep-forest-ink);
  stroke-width: 1.5;
}

/* Form Styles */
.form-group {
  margin-bottom: var(--space-24);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-8);
  color: var(--color-deep-forest-ink);
}

.form-control {
  width: 100%;
  padding: var(--space-16);
  border: 2px solid var(--color-mist-sage);
  border-radius: var(--radius-small);
  background-color: var(--color-white);
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-deep-forest-ink);
  transition: border-color var(--transition-smooth);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-electric-mint);
}

.form-control.is-invalid {
  border-color: var(--color-warm-terracotta);
}

.error-message {
  display: none;
  color: var(--color-warm-terracotta);
  font-size: 0.875rem;
  margin-top: var(--space-8);
}

.error-message.is-visible {
  display: block;
}

/* Footer */
.site-footer {
  background-color: var(--color-deep-forest-ink);
  color: var(--color-porcelain-cream);
  padding: var(--space-64) 0 var(--space-24);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-40);
  margin-bottom: var(--space-64);
}

.footer-brand {
  margin-bottom: var(--space-16);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-electric-mint);
}

.footer-heading {
  font-size: 1rem;
  color: var(--color-glacier-cyan);
  margin-bottom: var(--space-16);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: var(--space-12);
}

.footer-links a {
  color: var(--color-mist-sage);
}

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

.footer-bottom {
  border-top: 1px solid rgba(209, 226, 218, 0.2);
  padding-top: var(--space-24);
  font-size: 0.875rem;
  color: rgba(247, 249, 248, 0.7);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-16);
}

.footer-legal-links {
  display: flex;
  gap: var(--space-16);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: var(--space-24);
  left: var(--space-24);
  right: var(--space-24);
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--color-white);
  border-radius: var(--radius-large);
  padding: var(--space-24);
  box-shadow: 0 16px 40px rgba(10, 35, 31, 0.15);
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
  z-index: 1000;
  transform: translateY(150%);
  transition: transform 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.cookie-banner.is-visible {
  transform: translateY(0);
}

.cookie-text {
  font-size: 0.9rem;
}

.cookie-actions {
  display: flex;
  gap: var(--space-12);
  flex-wrap: wrap;
}

.cookie-actions .btn {
  font-size: 0.875rem;
  padding: var(--space-8) var(--space-16);
}

/* Contact Map Block */
.map-block {
  background-color: var(--color-mist-sage);
  border-radius: var(--radius-medium);
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--space-40);
  background-image: 
    linear-gradient(rgba(10,35,31,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10,35,31,0.05) 1px, transparent 1px);
  background-size: 20px 20px;
}

.map-block-content {
  text-align: center;
  background-color: var(--color-white);
  padding: var(--space-16) var(--space-24);
  border-radius: var(--radius-small);
  box-shadow: var(--shadow-micro);
}

/* Responsive Utilities */
@media (max-width: 768px) {
  .hero {
    margin: var(--space-12);
    padding: var(--space-40) var(--space-16);
  }
  .section {
    padding: var(--space-40) 0;
  }
}

@media (max-width: 400px) {
  h1 { font-size: 1.75rem; }
  .grid {
    grid-template-columns: 1fr;
  }
  .footer-legal-links {
    flex-direction: column;
    gap: var(--space-8);
  }
}