:root {
  --color-primary: #0D4C64;
  --color-primary-dark: #0A3D50;
  --color-primary-75: #4A798B;
  --color-primary-50: #86A6B2;
  --color-primary-25: #C3D2D8;
  --color-primary-10: #E7EDF0;
  --color-bg: #FBFCFD;
  --color-text: #16262C;
  --color-text-muted: #4B6169;
  --font-sans: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1040px;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

img, svg {
  max-width: 100%;
}

a {
  color: var(--color-primary);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header / Nav */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 252, 253, 0.92);
  backdrop-filter: saturate(180%) blur(6px);
  border-bottom: 1px solid var(--color-primary-25);
}

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

.brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-primary-dark);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.site-nav {
  display: flex;
  gap: 24px;
}

.site-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

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

/* Hero */

.hero {
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: 96px 0 80px;
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary-25);
  margin: 0 0 16px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin: 0 0 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.hero .lead {
  font-size: 1.15rem;
  max-width: 640px;
  color: #E7EDF0;
  margin: 0 0 36px;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, background 0.15s ease;
}

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

.btn-primary {
  background: #fff;
  color: var(--color-primary-dark);
}

.btn-primary:hover {
  background: var(--color-primary-10);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.55);
}

.btn-outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

/* Sections */

section {
  padding: 72px 0;
}

.section-tint {
  background: var(--color-primary-10);
}

h2 {
  font-size: 1.8rem;
  margin: 0 0 12px;
  color: var(--color-primary-dark);
  letter-spacing: -0.01em;
}

.section-subtitle {
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 0 40px;
}

/* About */

.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-grid p {
  color: var(--color-text-muted);
  margin: 0 0 16px;
}

.fact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.fact-list li {
  background: #fff;
  border: 1px solid var(--color-primary-25);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.fact-list .fact-label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary-75);
  font-weight: 700;
  margin-bottom: 4px;
}

/* Skills */

.skills-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}

.skills-groups h3 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary-dark);
  margin: 0 0 14px;
}

.pill-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  background: #fff;
  border: 1px solid var(--color-primary-50);
  color: var(--color-primary-dark);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.88rem;
  font-weight: 600;
}

/* References placeholder */

.placeholder-note {
  border: 1.5px dashed var(--color-primary-50);
  border-radius: var(--radius);
  padding: 28px;
  color: var(--color-text-muted);
  background: #fff;
}

/* Contact */

.contact {
  background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  text-align: center;
}

.contact h2 {
  color: #fff;
}

.contact .section-subtitle {
  color: var(--color-primary-25);
  margin-left: auto;
  margin-right: auto;
}

.contact .cta-group {
  justify-content: center;
}

/* Footer */

.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-primary-25);
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.site-footer a {
  color: var(--color-text-muted);
  text-decoration: none;
}

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

/* Impressum page */

.legal {
  padding: 64px 0 80px;
}

.legal h1 {
  color: var(--color-primary-dark);
  margin-top: 0;
}

.legal h2 {
  font-size: 1.15rem;
  margin-top: 36px;
}

.legal p {
  color: var(--color-text-muted);
}

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-weight: 600;
  text-decoration: none;
}

@media (max-width: 720px) {
  .site-nav {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 72px 0 56px;
  }
}