/* === Variables === */
:root {
  --color-bg: #fafbfc;
  --color-bg-alt: #f1f5f9;
  --color-surface: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-accent: #0d7377;
  --color-accent-hover: #0a5c5f;
  --color-border: #e2e8f0;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --max-width: 1100px;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 48px rgba(15, 23, 42, 0.08);
}

/* === Reset & base === */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--color-accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-accent-hover); }
h1, h2, h3 { line-height: 1.2; font-weight: 700; }

/* === Layout === */
.app {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* === Achtergrond === */
.bg-visual {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(13, 115, 119, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse 70% 50% at 85% 80%, rgba(13, 115, 119, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(13, 115, 119, 0.03) 0%, transparent 60%),
    linear-gradient(180deg, #f8fafb 0%, #f1f5f9 50%, #fafbfc 100%);
}
.bg-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(15, 23, 42, 0.04) 1px, transparent 0);
  background-size: 32px 32px;
  pointer-events: none;
}
.bg-visual::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 80%;
  height: 100%;
  background: radial-gradient(ellipse 60% 80% at center, rgba(13, 115, 119, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

/* === Header === */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.logo:hover { color: var(--color-accent); }
.nav { display: flex; gap: 1.5rem; }
.nav a {
  font-weight: 500;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}
.nav a:hover { color: var(--color-accent); }

/* === Hero === */
.hero {
  padding: 4.5rem 0 5.5rem;
  text-align: center;
  position: relative;
}
.hero-title {
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
  color: var(--color-text);
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}
.hero-tagline {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  max-width: 36ch;
  margin: 0 auto;
  font-weight: 500;
}

/* === Sections === */
.section { padding: 4rem 0; }
.section--alt {
  background: rgba(241, 245, 249, 0.7);
  position: relative;
}
.section-title {
  font-size: 1.75rem;
  margin: 0 0 1.5rem;
  color: var(--color-text);
  text-align: center;
}
.section-intro {
  max-width: 60ch;
  margin: 0 auto 2rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}
.intro-block {
  max-width: 52ch;
  margin: 0 auto;
}
.intro-block p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
}
.intro-block p:last-child { margin-bottom: 0; }

/* === Solution cards === */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
  margin-top: 2.5rem;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.solution-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  transition: box-shadow 0.2s, transform 0.2s;
  backdrop-filter: blur(8px);
}
.solution-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.solution-card h3 {
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}
.solution-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* === CTA === */
.cta-strip {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: #fff;
  padding: 2.75rem 0;
  text-align: center;
  position: relative;
}
.cta-strip p { margin: 0 0 0.5rem; font-size: 1rem; opacity: 0.95; }
.cta-strip .cta-title { font-size: 1.25rem; font-weight: 600; margin: 0 0 1rem; }

/* === Support === */
.support { padding: 4rem 0 5rem; }
.support-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}
.support-item { text-align: center; min-width: 180px; }
.support-item h3 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin: 0 0 0.5rem;
  font-weight: 600;
}
.support-item a,
.support-item p {
  font-size: 1.125rem;
  color: var(--color-text);
  margin: 0;
  font-weight: 500;
}
.support-item a:hover { color: var(--color-accent); }

/* === Footer === */
.footer {
  margin-top: auto;
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-align: center;
}
.footer .logo { font-size: 1.25rem; }
.footer p { margin: 0; font-size: 0.875rem; color: var(--color-text-muted); }

/* === Responsive === */
@media (max-width: 640px) {
  .nav { display: none; }
  .hero { padding: 3rem 0 4rem; }
  .section { padding: 3rem 0; }
  .solutions-grid { grid-template-columns: 1fr; }
}