/* Mini Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* CSS Variables */
:root {
  --accent-green: #90A955;
  --accent-green-muted: #B5C99A;
  --dark-text: #111111;
  --muted-text: #5C5C5C;
  --paper: #FAFAF7;
  --hairline: #E6E6DF;
  --link-hover: #6B7F3E;
  
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-2xl: 8rem;
  
  --max-width: 1100px;
  --transition: 200ms ease;
}

/* Base Styles */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

body {
  font-family: var(--font-sans);
  font-size: clamp(17px, 1.125vw, 19px);
  line-height: 1.6;
  color: var(--dark-text);
  background: var(--paper);
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0px;  
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(250, 250, 247, 1);
  z-index: 40;  
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--accent-green);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  z-index: 100;
  font-size: 0.95rem;
}

.skip-link:focus {
  top: 0;
}

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  background: rgba(250, 250, 247, 1);
  border-bottom: 1px solid var(--hairline);
  z-index: 50;
  padding: var(--spacing-sm) 0;
}

.header-wrapper {
  max-width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.header-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  
}

.header-logo img {
  height: 32px; 
  width: auto;
  transition: opacity var(--transition);
}

.header-logo:hover img {
  opacity: 0.7;
}

nav {
  flex: 1;
  padding: 0;
}

/* Mobile: Logos kleiner */
@media (max-width: 768px) {
  .header-logo img {
    height: 30px;
  }
  
  nav ul {
    gap: 0.5rem;
  }
}

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1rem, 3vw, 2rem);
  justify-content: center;
  align-items: center;
}

nav a {
  color: var(--muted-text);
  text-decoration: none;
  font-size: clamp(0.85rem, 1vw, 0.95rem);
  letter-spacing: 0.01em;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

nav a:hover, nav a:focus {
  color: var(--dark-text);
  border-bottom-color: var(--accent-green);
}

nav a.active {
  color: var(--dark-text);
  border-bottom-color: var(--accent-green);
}

/* Hero */
.hero-container {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: linear-gradient(135deg, var(--accent-green-muted) 0%, var(--accent-green) 100%);
  background-image: url('assets/hero.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: -1;
}

.hero-overlay {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  background: transparent;
}

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
}

.hero-content {
  max-width: 1000px;
}

/* Hero Components  */
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.badge {
  padding: var(--spacing-xs) var(--spacing-md);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 2px;
  font-size: 0.9rem;
  color: white;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
}

.scroll-indicator {
  text-align: center;
  margin-top: var(--spacing-xl);
}

.scroll-arrow {
  display: inline-block;
  color: white;
  font-size: 2rem;
  animation: pulse 2s ease-in-out infinite;
  text-decoration: none;
  text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

@media (prefers-reduced-motion: reduce) {
  .scroll-arrow {
    animation: none;
  }
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(4px); }
}

/* Typography */
h1 {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
  color: white;
  text-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  max-width: 100%;
}

.subline {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.5;
  color: white;
  max-width: 80ch;
  margin-bottom: var(--spacing-lg);
  text-shadow: 0 2px 20px rgba(0,0,0,0.15);
  hyphens: manual;
}

a {
  color: var(--accent-green);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: all var(--transition);
}

/* Links */
a:hover, a:focus {
  color: var(--link-hover);
  text-decoration-thickness: 2px;
}

/* Fußnoten-Nummern im Text */
sup a {
  text-decoration: none;
  color: var(--accent-green);
}

/* Fußnoten-Liste */
.footnotes {
  font-size: 0.85em;
  color: var(--muted-text);
  margin-top: var(--spacing-lg);
  border-top: 1px solid var(--hairline);
  padding-top: var(--spacing-md);
}

.footnotes ol {
  margin: 0;
  padding-left: 20px;
}

.footnotes li {
  margin-bottom: var(--spacing-xs);
}

.footnotes a {
  color: var(--muted-text);
  text-decoration: none;
  margin-left: 5px;
}

.footnotes {
  font-size: 0.85em;
  color: #555;
  margin-top: 15px;
  border-top: 1px solid #ccc;
  padding-top: 10px;
}

.footnotes ol {
  margin: 0;
  padding-left: 20px;
}

.footnotes li {
  margin-bottom: 5px;
}

.footnotes a {
  color: #888;
  text-decoration: none;
  margin-left: 5px;
}

/* Main Content Layout */
main {
  background: var(--paper);
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

section p {
  text-align: justify;  
  hyphens: auto;  
}

section {
  padding: var(--spacing-2xl) 1rem;
  border-bottom: 1px solid var(--hairline);
}

section:last-of-type {
  border-bottom: none;
}

/* Grid Layouts */
.grid-2x2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

@media (max-width: 768px) {
  .grid-2x2 {
    grid-template-columns: 1fr;
  }
}

.grid-item {
  padding: var(--spacing-md);
  border: 1px solid var(--hairline);
  border-radius: 2px;
}

.grid-item h3 {
  color: var(--accent-green);
  margin-bottom: var(--spacing-sm);
}

/* Timeline */
.timeline {
  margin: var(--spacing-lg) 0;
  padding-left: var(--spacing-md);
  border-left: 2px solid var(--hairline);
}

.timeline-item {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-md);
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--spacing-md) - 5px);
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-green);
}

.timeline-year {
  font-weight: 600;
  color: var(--accent-green);
  margin-bottom: var(--spacing-xs);
}

/* Image Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.gallery-item {
  aspect-ratio: 3 / 2;
  background: linear-gradient(135deg, #E6E6DF 0%, #B5C99A 100%);
  border-radius: 5px;
  position: relative;
  overflow: hidden;
  width: 100%;           
  height: 100%;         
  object-fit: cover;     
  object-position: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.gallery-figure {
  position: relative;
  margin: 0;
}

.gallery-caption {
  position: relative;  
  padding: var(--spacing-sm) 0;
  color: var(--dark-text);
  font-size: 0.85rem;
  line-height: 1.4;
  background: none;  
}

.caption-title {
  display: block;
  font-weight: 500;
  margin-bottom: 0.25rem;
  color: var(--dark-text);
}

.caption-source {
  display: block;
  font-size: 0.75rem;
  color: var(--muted-text);
  font-style: italic;
}

.gallery-item::after {
  content: attr(data-label);
  position: absolute;
  bottom: var(--spacing-sm);
  left: var(--spacing-sm);
  color: white;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  opacity: 0.8;
}

.map-container {
  width: 100%;
  margin: var(--spacing-lg) 0;
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.map-container iframe {
  display: block;
  width: 100%;
  height: 600px;
  border: none;
}

@media (max-width: 768px) {
  .map-container iframe {
    height: 400px;
  }
}

.map-caption {
  padding: var(--spacing-sm) 0;
  color: var(--muted-text);
  font-size: 0.85rem;
  font-style: italic;
  text-align: center;
  line-height: 1.4;
}

/* YouTube Video Embeds */
.video-container {
  width: 100%;
  margin: var(--spacing-lg) 0;
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  border: none;
}

.video-container iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: none;
}

.video-caption {
  padding: var(--spacing-sm) 0;
  color: var(--muted-text);
  font-size: 0.85rem;
  font-style: italic;
  text-align: center;
  line-height: 1.4;
}

/* Diagram Styles */
.diagram-figure {
  margin: var(--spacing-lg) 0;
  max-width: 100%;
}

.diagram-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 2px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}


/* Info Box */
.info-box {
  background: white;
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--accent-green);
  padding: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Flow Diagram */
.flow-diagram {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-lg) var(--spacing-md);
  background: white;
  border: 1px solid var(--hairline);
  border-radius: 2px;
}

.flow-item {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  font-size: 0.9rem;
  white-space: nowrap;
}

.flow-arrow {
  color: var(--accent-green);
  font-size: 1.2rem;
}

.flow-diagram-container {
  width: 100%;
  margin: var(--spacing-lg) 0;
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.flow-diagram {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) var(--spacing-md);
  background: white;
  border: 1px solid var(--hairline);
  border-radius: 0;
  margin: 0;
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.column {
  padding: var(--spacing-md);
  border: 1px solid var(--hairline);
  border-radius: 2px;
}

.column h3 {
  color: var(--accent-green);
  margin-bottom: var(--spacing-sm);
}

.column ul {
  list-style: none;
  padding-left: 0;
}

.column li {
  padding: var(--spacing-xs) 0;
  padding-left: 1.5rem;
  position: relative;
}

.column li::before {
  content: '•';
  position: absolute;
  left: 0.5rem;
  color: var(--accent-green);
}

/* FAQ */
.accordion {
  margin: var(--spacing-lg) 0;
}

.accordion-item {
  border-bottom: 1px solid var(--hairline);
}

.accordion-header {
  width: 100%;
  padding: var(--spacing-md) 0;
  background: none;
  border: none;
  text-align: left;
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--dark-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition);
}

.accordion-header:hover,
.accordion-header:focus {
  color: var(--accent-green);
  outline: none;
}

.accordion-icon {
  font-size: 1.5rem;
  color: var(--accent-green);
  transition: transform var(--transition);
  line-height: 1;
}

.accordion-header[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms ease;
}

.accordion-content.is-open {
  max-height: 1000px;
}

.accordion-body {
  padding-bottom: var(--spacing-md);
  color: var(--muted-text);
}

/* Source List */
.source-list {
  list-style: none;
}

.source-item {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--hairline);
}

.source-item:last-child {
  border-bottom: none;
}

.source-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.source-desc {
  color: var(--muted-text);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-xs);
}

.source-link {
  font-size: 0.9rem;
  color: var(--accent-green);
}

/* Footer */
footer {
  border-top: 1px solid var(--hairline);
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted-text);
  background: var(--paper);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-links {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 300ms ease, transform 300ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

:target {
  scroll-margin-top: 100px; 
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* Image Placeholders */
.img-placeholder {
  width: 100%;
  background: linear-gradient(135deg, #E6E6DF 0%, #B5C99A 100%);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
  margin: var(--spacing-md) 0;
}

.img-placeholder::after {
  content: attr(data-label);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  opacity: 0.7;
  text-align: center;
}

.ratio-16x9 { aspect-ratio: 16 / 9; }
.ratio-4x3 { aspect-ratio: 4 / 3; }
.ratio-3x2 { aspect-ratio: 3 / 2; }
.ratio-21x9 { aspect-ratio: 21 / 9; }
.ratio-3x1 { aspect-ratio: 3 / 1; }

/* Focus Styles (Accessibility) */
*:focus-visible {
  outline: 2px solid var(--accent-green);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent-green);
  outline-offset: 2px;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  section {
    padding: var(--spacing-xl) 0;
  }

  .hero-container {
    min-height: 500px;
  }

  nav ul {
    font-size: 0.85rem;
    gap: 0.75rem;
  }

  .flow-diagram {
    flex-direction: column;
    align-items: stretch;
  }

  .flow-item {
    text-align: center;
  }

  .flow-arrow {
    transform: rotate(90deg);
  }

  .badges {
    flex-direction: column;
  }

  .badge {
    text-align: center;
  }
}

@media (max-width: 599px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .subline {
    font-size: 1.1rem;
  }
}

/* Hover Animation for Grid Items */
.grid-item {
  padding: var(--spacing-md);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  transition: transform 0.3s ease;
}

.grid-item:hover {
  animation: subtleWiggle 0.6s ease;
}

@keyframes subtleWiggle {
  0%, 100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(0.5deg);
  }
  50% {
    transform: rotate(-0.5deg);
  }
  75% {
    transform: rotate(0.3deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .grid-item:hover {
    animation: none;
  }
}