/* ===== CSS Reset & Base ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #2c3e6b;
  --color-primary-light: #3d5a99;
  --color-accent: #c9a84c;
  --color-accent-light: #f0dfa0;
  --color-bg: #fafafa;
  --color-bg-alt: #f0f2f5;
  --color-text: #2d2d2d;
  --color-text-light: #5a5a5a;
  --color-white: #ffffff;
  --color-border: #e0e0e0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --radius: 8px;
  --radius-lg: 16px;
  --max-width: 1100px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 17px;
}

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

a:hover {
  color: var(--color-accent);
}

img {
  max-width: 100%;
  height: auto;
}

/* ===== Navigation ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.navbar .logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.navbar .logo span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}

.nav-links a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--color-text-light);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  background: var(--color-bg-alt);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: 5rem 2rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.hero .subtitle {
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
  opacity: 0.9;
  max-width: 650px;
  margin: 0 auto 2rem;
  font-weight: 300;
}

.hero .dates {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* ===== Content Sections ===== */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 2rem;
}

.section-header {
  margin-bottom: 2.5rem;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section-header p {
  color: var(--color-text-light);
  font-size: 1.05rem;
}

.section-header .accent-line {
  width: 50px;
  height: 3px;
  background: var(--color-accent);
  margin-top: 0.75rem;
  border-radius: 2px;
}

/* ===== Cards ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card h3 {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.card .card-icon {
  width: 48px;
  height: 48px;
  background: var(--color-bg-alt);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card-link {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary-light);
}

.card-link::after {
  content: ' \2192';
  transition: transform var(--transition);
}

.card:hover .card-link::after {
  margin-left: 4px;
}

/* ===== Timeline ===== */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-primary));
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.5rem;
  top: 6px;
  width: 13px;
  height: 13px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-accent);
  transform: translateX(-5px);
}

.timeline-item .year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.timeline-item h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
}

.timeline-item p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* ===== Quote Block ===== */
.quote-block {
  background: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
  padding: 1.5rem 2rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 2rem 0;
}

.quote-block p {
  font-style: italic;
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.quote-block cite {
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-style: normal;
  font-weight: 600;
}

/* ===== Info Box ===== */
.info-box {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-sm);
}

.info-box h3 {
  color: var(--color-primary);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.info-box ul {
  list-style: none;
  padding: 0;
}

.info-box ul li {
  padding: 0.4rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--color-text-light);
}

.info-box ul li::before {
  content: '\2022';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
  font-size: 1.2em;
}

/* ===== Two Column Layout ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.two-col.reverse {
  direction: rtl;
}

.two-col.reverse > * {
  direction: ltr;
}

/* ===== Sources / Quellen ===== */
.source-list {
  list-style: none;
}

.source-list li {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
}

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

.source-list .source-type {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.4rem;
}

.source-list .source-title {
  font-weight: 600;
  color: var(--color-text);
  display: block;
  margin-bottom: 0.2rem;
}

.source-list .source-detail {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ===== Footer ===== */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.8);
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
  font-size: 0.9rem;
}

.footer strong {
  color: var(--color-white);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    padding: 3rem 1.5rem;
  }

  .section {
    padding: 2.5rem 1.5rem;
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .two-col.reverse {
    direction: ltr;
  }

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

/* ===== Page Transition ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}