/* Berliner Krypto-Kurier – Shared Styles */
:root {
  --color-primary: #0A2A44;
  --color-accent: #C9A227;
  --color-bg: #F5F7FA;
  --color-text: #1A1A1A;
  --color-muted: #5A6A7A;
  --color-white: #FFFFFF;
  --color-border: #DDE3EA;
  --font-stack: Arial, Helvetica, sans-serif;
  --max-width: 1200px;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(10, 42, 68, 0.08);
  --shadow-hover: 0 6px 20px rgba(10, 42, 68, 0.14);
  --transition: 0.25s ease;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover, a:focus {
  color: var(--color-accent);
  text-decoration: underline;
}

a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  font-weight: 700;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus {
  top: 0;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 0.75rem 1.25rem;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 0.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

.brand:hover, .brand:focus {
  color: var(--color-accent);
  text-decoration: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

/* Navigation */
.main-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.main-nav a {
  color: var(--color-white);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  display: block;
  transition: background var(--transition), color var(--transition);
}

.main-nav a:hover, .main-nav a:focus {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-accent);
  text-decoration: none;
}

.main-nav a[aria-current="page"] {
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 700;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.5);
  color: var(--color-white);
  border-radius: var(--radius);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  font-size: 1rem;
}

.nav-toggle:hover, .nav-toggle:focus {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }
  .main-nav {
    display: none;
    width: 100%;
  }
  .main-nav.is-open {
    display: block;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 0.15rem;
    padding-bottom: 0.5rem;
  }
  .main-nav a {
    padding: 0.65rem 0.85rem;
  }
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #123A5C 100%);
  color: var(--color-white);
  padding: 3.5rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  max-width: 720px;
  margin: 0 auto 1.75rem;
  opacity: 0.92;
}

.hero .btn {
  background: var(--color-accent);
  color: var(--color-primary);
  border: none;
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius);
  cursor: pointer;
  display: inline-block;
  transition: transform var(--transition), box-shadow var(--transition);
}

.hero .btn:hover, .hero .btn:focus {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 162, 39, 0.4);
  text-decoration: none;
  color: var(--color-primary);
}

/* Sections */
.section {
  padding: 3rem 0;
}

.section-title {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.section-subtitle {
  color: var(--color-muted);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  transition: transform var(--transition), box-shadow var(--transition);
  border-top: 4px solid var(--color-accent);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.card h3 {
  color: var(--color-primary);
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--color-muted);
  font-size: 0.95rem;
  flex-grow: 1;
}

.card .meta {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.card .read-more {
  margin-top: 1rem;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary);
}

.card .read-more:hover, .card .read-more:focus {
  color: var(--color-accent);
}

/* Article / Content */
.content {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  margin-bottom: 2rem;
}

.content h2 {
  color: var(--color-primary);
  font-size: 1.5rem;
  margin: 1.5rem 0 0.75rem;
}

.content h2:first-child {
  margin-top: 0;
}

.content p {
  margin-bottom: 1rem;
  color: var(--color-text);
}

.content ul, .content ol {
  margin: 0 0 1rem 1.5rem;
  color: var(--color-text);
}

.content li {
  margin-bottom: 0.4rem;
}

.content blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 0.75rem 1.25rem;
  background: var(--color-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.25rem 0;
  font-style: italic;
  color: var(--color-muted);
}

/* Two-column layout */
.layout-two-col {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 860px) {
  .layout-two-col {
    grid-template-columns: 1fr;
  }
}

/* Sidebar */
.sidebar {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.sidebar h3 {
  color: var(--color-primary);
  font-size: 1.1rem;
  margin-bottom: 1rem;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 0.5rem;
}

.sidebar ul {
  list-style: none;
}

.sidebar li {
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.sidebar li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.sidebar a {
  font-size: 0.95rem;
  font-weight: 500;
  display: block;
}

/* Buttons */
.btn {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.btn:hover, .btn:focus {
  background: var(--color-accent);
  color: var(--color-primary);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover, .btn-outline:focus {
  background: var(--color-primary);
  color: var(--color-white);
}

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.85);
  padding: 2.5rem 0 1.5rem;
  margin-top: 3rem;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  color: var(--color-accent);
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.4rem;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.85);
}

.footer-col a:hover, .footer-col a:focus {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 1.25rem;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

/* Utility */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }

/* Responsive tweaks */
@media (max-width: 480px) {
  .hero { padding: 2.5rem 0 2rem; }
  .section { padding: 2rem 0; }
  .content { padding: 1.25rem; }
  .card { padding: 1.25rem; }
}