:root {
  /* Colors */
  --color-bg: #111827;
  --color-surface: #1f2937;
  --color-primary: #14f1d9;
  --color-primary-light: #10e1c9;
  --color-text: #e5e7eb;
  --color-text-muted: #9ca3af;
  --color-shadow: rgba(20, 241, 217, 0.1);

  /* Layout */
  --radius: 10px;
  --shadow: 0 4px 20px var(--color-shadow);
  --container-width: 1100px;
  --transition: 0.3s ease;

  /* Spacing Scale */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;

  /* Typography Scale */
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
}

/* === BASE === */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* === TYPOGRAPHY === */
h1,
h2,
h3 {
  color: var(--color-primary);
  margin: 0 0 var(--space-md);
}

h1 {
  font-size: var(--text-4xl);
}
h2 {
  font-size: var(--text-2xl);
}
h3 {
  font-size: var(--text-xl);
}

p {
  margin: 0 0 var(--space-sm);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

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

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

/* === LAYOUT === */
.container {
  max-width: var(--container-width);
  width: 95%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.main-content {
  min-height: calc(100vh - 120px);
}

/* === COMPONENTS === */

/* Button Component */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  text-align: center;
  border: 2px solid var(--color-primary);
  transition: all var(--transition);
  cursor: pointer;
}

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

.btn--outline {
  background: transparent;
  color: var(--color-primary);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(20, 241, 217, 0.4);
  border-color: var(--color-primary-light);
}

.btn--outline:hover {
  color: var(--color-primary-light);
  box-shadow: 0 6px 20px rgba(20, 241, 217, 0.3);
}

/* Card Component */
.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card__content {
  padding: var(--space-lg);
}

.card--wide {
  max-width: 900px; /* Gleiche Breite wie card--side */
  width: 100%;
}

.card--side {
  display: flex;
  max-width: 900px;
  padding: 0;
  min-height: 280px;
}

.card--equal {
  flex: 1;
  min-width: 300px;
  max-width: 450px;
}

.card__image {
  width: 350px;
  height: 280px;
  object-fit: cover;
  flex-shrink: 0;
  display: block;
}

.card__image--left {
  border-radius: var(--radius) 0 0 var(--radius);
}

.card__image--right {
  border-radius: 0 var(--radius) var(--radius) 0;
}

.card__text {
  flex: 1;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
}

/* Section Component */
.section {
  padding: var(--space-2xl) var(--space-md);
  max-width: var(--container-width);
  margin: 0 auto;
  text-align: center;
}

/* Grid Component */
.grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
  max-width: var(--container-width);
  margin: 0 auto;
}

.grid--equal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
  max-width: var(--container-width);
  margin: 0 auto;
}

/* Header Component */
header {
  background: var(--color-surface);
  padding: var(--space-sm) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.logo {
  height: 48px;
  width: 120px;
  object-fit: contain;
}

/* Navigation Component */
.nav {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  color: var(--color-text);
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
}

.nav__toggle {
  display: none;
}

/* --- Mobile Navigation Toggle --- */
.nav__toggle-btn {
  display: none;
  position: absolute;
  right: 18px;
  width: 48px;
  height: 48px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  z-index: 1000;

  svg {
    fill: var(--color-primary);
  }
}

@media (max-width: 900px) {
  /* Hamburger sichtbar, X versteckt */
  .nav__toggle:not(:checked) ~ .nav__toggle-btn--open {
    display: block;
  }
  .nav__toggle:not(:checked) ~ .nav__toggle-btn--close {
    display: none;
  }

  /* Wenn Menü geöffnet: Hamburger verstecken, X zeigen */
  .nav__toggle:checked ~ .nav__toggle-btn--open {
    display: none;
  }
  .nav__toggle:checked ~ .nav__toggle-btn--close {
    display: block;
  }

  /* Navigation sichtbar bei geöffnetem Menü */
  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--color-surface);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    display: none;
    z-index: 100;
  }
  .nav__toggle:checked ~ .nav {
    display: flex;
  }
}

/* Hero Component */
.hero {
  background: linear-gradient(135deg, var(--color-surface), #1e293b);
  text-align: center;
  padding: 80px var(--space-md);
}

.hero__title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-sm);
}

.hero__text {
  font-size: var(--text-lg);
  color: #d1d5db;
  margin-bottom: var(--space-lg);
}

/* Footer Component */
.footer {
  background: var(--color-surface);
  padding: var(--space-lg);
  text-align: center;
  color: var(--color-text-muted);
  margin-top: var(--space-xl);
}

.footer__content {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__links {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

.footer__link {
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.footer__link:hover {
  color: var(--color-primary);
}

/* Utility Classes */
.text--muted {
  color: var(--color-text-muted);
}
.text--small {
  font-size: var(--text-sm);
}
.text--center {
  text-align: center;
}
.text--left {
  text-align: left;
}

.spacing--none {
  margin: 0;
}
.spacing--sm {
  margin-bottom: var(--space-sm);
}
.spacing--md {
  margin-bottom: var(--space-md);
}

/* Legal Content */
.legal {
  max-width: 800px;
  margin: var(--space-2xl) auto;
  padding: 0 var(--space-md);
  line-height: 1.7;
}

.legal h2 {
  margin: var(--space-xl) 0 var(--space-md) 0;
  border-bottom: 1px solid var(--color-text-muted);
  padding-bottom: 8px;
}

.legal section {
  margin-bottom: var(--space-xl);
}

.legal p {
  text-align: justify;
}

.legal ul {
  padding-left: 2rem;
}

.legal li {
  margin-bottom: 8px;
}

.legal li::marker {
  color: var(--color-primary);
}

.legal__footer {
  border-top: 1px solid var(--color-text-muted);
  margin-top: var(--space-2xl);
  padding-top: var(--space-md);
  text-align: center;
  color: var(--color-text-muted);
  font-style: italic;
}

.address {
  margin: var(--space-md) 0;
  color: var(--color-text);
}

/* Special Elements */
.hint {
  margin: var(--space-md) 0;
  color: var(--color-primary);
  font-style: italic;
}

.icon {
  margin-bottom: var(--space-md);
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .container {
    align-items: flex-start;
    position: relative;
  }

  .section {
    padding: var(--space-xl) var(--space-sm);
  }

  .grid {
    flex-direction: column;
    gap: var(--space-md);
  }

  .card,
  .card--wide,
  .card--equal {
    max-width: 100%;
    width: 100%;
    flex: none;
  }

  .card--side {
    flex-direction: column;
  }

  .card__image {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .card__image--left,
  .card__image--right {
    border-radius: var(--radius) var(--radius) 0 0;
  }

  .card__text {
    padding: var(--space-md);
  }

  /* Mobile Navigation */
  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--color-surface);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    display: none;
    z-index: 999;
  }

  .nav li {
    padding: 18px 0;
    text-align: center;
    width: 100%;
  }

  .nav__link {
    font-size: var(--text-xl);
    color: var(--color-primary);
    font-weight: 600;
    letter-spacing: 1px;
  }

  .nav__toggle-btn {
    display: block;
    width: 48px;
    height: 48px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;

    svg {
      fill: var(--color-primary);
    }
  }

  .nav__toggle:checked ~ .nav {
    display: flex;
  }

  .nav__toggle:checked ~ .nav__toggle-btn span:nth-child(1) {
    transform: translateY(11px) rotate(45deg);
  }

  .nav__toggle:checked ~ .nav__toggle-btn span:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle:checked ~ .nav__toggle-btn span:nth-child(3) {
    transform: translateY(-11px) rotate(-45deg);
  }

  .footer__content {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .footer__links {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .legal {
    padding: 0 var(--space-sm);
    margin: var(--space-lg) auto;
  }

  .legal ul {
    padding-left: 1.5rem;
  }

  .legal p {
    text-align: left;
  }
}