:root {
  --brand: #1B3348;
  --brand-dark: #0F2233;
  --accent: #1C8CA8;
  --ink: #131B24;
  --ink-soft: #4E5D6C;
  --bg: #F7F9FA;
  --bg-alt: #EEF2F5;
  --border: #DCE3E8;
  --radius: 8px;
  --font-heading: "Fraunces", Georgia, serif;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

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

h1, h2, h3 { font-family: var(--font-heading); line-height: 1.15; margin: 0 0 0.5em; font-weight: 600; }
h1 { font-size: clamp(2.1rem, 4.2vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
p { color: var(--ink-soft); margin: 0 0 1em; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Language toggling */
.lang-en { display: none; }
html[data-lang="en"] .lang-de { display: none; }
html[data-lang="en"] .lang-en { display: initial; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(247, 249, 250, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.logo {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--ink);
  text-decoration: none;
  line-height: 1.2;
}
.logo-sub {
  display: block;
  font-family: var(--font);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.nav {
  display: flex;
  gap: 1.5rem;
}
.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
}
.nav a:hover { color: var(--brand); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.lang-toggle {
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  color: var(--ink-soft);
  cursor: pointer;
}
.lang-toggle:hover { border-color: var(--brand); color: var(--brand); }

.nav-cta { display: none; }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

@media (min-width: 860px) {
  .nav-cta { display: inline-flex; }
}
@media (max-width: 859px) {
  .nav-toggle { display: flex; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .nav.open { max-height: 320px; }
  .nav a {
    padding: 0.9rem 1.5rem;
    border-top: 1px solid var(--border);
  }
  .header-actions { order: 3; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--brand);
  color: #fff;
}
.btn-primary:hover { background: var(--brand-dark); }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--brand); color: var(--brand); }

/* Hero */
.hero {
  position: relative;
  padding: 6rem 0 4.5rem;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg-alt), var(--bg));
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(27,51,72,0.05) 0, rgba(27,51,72,0.05) 1px, transparent 1px, transparent 48px),
    repeating-linear-gradient(90deg, rgba(27,51,72,0.05) 0, rgba(27,51,72,0.05) 1px, transparent 1px, transparent 48px);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
@media (min-width: 860px) {
  .hero-inner { grid-template-columns: 3fr 2fr; }
}
.hero-text { max-width: 620px; }
.hero-photo {
  position: relative;
  justify-self: center;
  width: 220px;
}
@media (min-width: 860px) {
  .hero-photo { width: 270px; justify-self: end; }
}
.hero-photo-img {
  display: block;
  width: 100%;
  aspect-ratio: 330 / 367;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 12px 28px -16px rgba(19, 27, 36, 0.3);
}
.eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}
.hero-sub { font-size: 1.15rem; margin-bottom: 0.5rem; max-width: 560px; }
.hero-tagline {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--brand);
  margin-bottom: 1.85rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Sections */
.section { padding: 4.5rem 0; }
.section-alt { background: var(--bg-alt); }

/* Grid / cards */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 700px) {
  .grid-2 { grid-template-columns: 1fr; }
}
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-top: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.85rem;
}
.card h3 { font-size: 1.15rem; }
.card p { margin: 0; }
@media (min-width: 701px) {
  .card-wide { grid-column: 1 / -1; }
}

/* About */
.about-inner {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 2.5rem;
  align-items: start;
}
@media (max-width: 760px) {
  .about-inner { grid-template-columns: 1fr; }
}
.credentials {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.credentials li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink);
}
.credential-icon { font-size: 1.2rem; line-height: 1.3; }

/* Contact */
.contact-inner { text-align: center; max-width: 600px; margin: 0 auto; }
.contact-methods {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}
.contact-methods a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
}
.contact-methods a:hover { color: var(--brand); }

/* Footer */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}
.site-footer p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

/* Scroll reveal */
.card, .about-inner {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.card.in, .about-inner.in {
  opacity: 1;
  transform: none;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #EAEDEF;
    --ink-soft: #9AA7B4;
    --bg: #0E151C;
    --bg-alt: #151F28;
    --border: #263340;
  }
  .site-header { background: rgba(14, 21, 28, 0.92); }
  .btn-primary { color: #fff; }
  .hero-bg {
    background-image:
      repeating-linear-gradient(0deg, rgba(234,237,239,0.05) 0, rgba(234,237,239,0.05) 1px, transparent 1px, transparent 48px),
      repeating-linear-gradient(90deg, rgba(234,237,239,0.05) 0, rgba(234,237,239,0.05) 1px, transparent 1px, transparent 48px);
  }
}