/* ===========================
   CSS Custom Properties
   =========================== */
:root {
  --color-yellow:   #F5A623;
  --color-yellow-dark: #D4891A;
  --color-black:    #0D2240;
  --color-navy:     #0D2240;
  --color-navy-light: #1A4A8A;
  --color-fiber:    #00A8C8;
  --color-gray-900: #1E3350;
  --color-gray-700: #4A5568;
  --color-gray-500: #718096;
  --color-gray-300: #CBD5E0;
  --color-gray-100: #EBF3FA;
  --color-white:    #FFFFFF;
  --color-bg:       #F5F9FD;

  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-xs:  0.75rem;
  --font-size-sm:  0.875rem;
  --font-size-base:1rem;
  --font-size-md:  1.125rem;
  --font-size-lg:  1.25rem;
  --font-size-xl:  1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.75rem;
  --font-size-4xl: 3.5rem;

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);

  --transition: 0.2s ease;
  --header-height: 88px;
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  touch-action: pan-y;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-gray-900);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  touch-action: pan-y;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

address { font-style: normal; }

/* ===========================
   Layout
   =========================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

section { padding: var(--space-20) 0; }

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4, h5 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-black);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p { color: var(--color-gray-700); line-height: 1.7; }

.section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-yellow-dark);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-4);
}

.section-sub {
  font-size: var(--font-size-md);
  color: var(--color-gray-500);
  max-width: 600px;
}

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-yellow);
  color: var(--color-black);
  border-color: var(--color-yellow);
}

.btn-primary:hover {
  background: var(--color-yellow-dark);
  border-color: var(--color-yellow-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245,166,35,0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-black);
  border-color: var(--color-gray-300);
}

.btn-outline:hover {
  border-color: var(--color-yellow);
  color: var(--color-yellow-dark);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo img { height: 59px; width: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-black);
  background: var(--color-gray-100);
}

.nav-link.active { color: var(--color-yellow-dark); }

.nav-news-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  background: var(--color-yellow);
  color: var(--color-black);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
}

.nav-contact {
  background: var(--color-yellow);
  color: var(--color-black) !important;
  font-weight: 600;
}

.nav-contact:hover {
  background: var(--color-yellow-dark);
  color: var(--color-black) !important;
}

.nav-search {
  gap: 6px;
}

.nav-search svg {
  flex-shrink: 0;
}

/* Dropdown */
.has-dropdown { position: relative; }

.dropdown-arrow {
  font-size: 12px;
  transition: transform var(--transition);
  display: inline-block;
}

.has-dropdown:hover .dropdown-arrow,
.has-dropdown:focus-within .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 240px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  z-index: 200;
}

.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown a {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  transition: background var(--transition), color var(--transition);
}

.dropdown a:hover {
  background: var(--color-gray-100);
  color: var(--color-black);
}

/* Lang switch */
.header-actions { display: flex; align-items: center; gap: var(--space-3); }

.lang-switch {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-gray-500);
  border: 1px solid var(--color-gray-300);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.lang-switch:hover {
  color: var(--color-black);
  border-color: var(--color-gray-700);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-black);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===========================
   Mobile Navigation
   =========================== */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0,0,0,0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.mobile-nav-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-drawer {
  position: absolute;
  top: 0;
  right: 0;
  width: min(360px, 100vw);
  height: 100%;
  background: var(--color-white);
  padding: var(--space-8) var(--space-6);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition);
}

.mobile-nav-overlay.open .mobile-nav-drawer {
  transform: translateX(0);
}

.mobile-nav-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-gray-500);
  margin-bottom: var(--space-6);
  display: block;
  margin-left: auto;
}

.mobile-nav-list > li { border-bottom: 1px solid var(--color-gray-100); }

.mobile-nav-list a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  font-size: var(--font-size-base);
  color: var(--color-gray-900);
}

.mobile-group-label {
  display: block;
  padding: var(--space-3) 0 var(--space-1);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.mobile-group ul { padding-left: var(--space-2); }

.lang-switch-mobile {
  color: var(--color-yellow-dark) !important;
  font-weight: 600;
}

/* ===========================
   Page Header (Unterseiten)
   =========================== */
.page-hero {
  background: linear-gradient(135deg, #E8F2FA 0%, #F5F9FD 60%, #EDF4FB 100%);
  color: var(--color-black);
  padding: var(--space-16) 0 var(--space-12);
  position: relative;
  overflow: hidden;
  border-bottom: 3px solid var(--color-yellow);
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 45%;
  height: 100%;
  background: linear-gradient(to left, rgba(0,168,200,0.07) 0%, transparent 100%);
  pointer-events: none;
}

.page-hero::after {
  display: none;
}

.page-hero h1 {
  color: var(--color-black);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-3);
}

.page-hero p {
  color: var(--color-gray-700);
  font-size: var(--font-size-md);
  max-width: 600px;
}

.detail-hero {
  background:
    radial-gradient(circle at 82% 26%, rgba(0,168,200,0.16) 0, rgba(0,168,200,0) 28%),
    linear-gradient(135deg, #DCECF7 0%, #F7FBFE 58%, #EAF4FA 100%);
  padding: var(--space-16) 0 var(--space-12);
}

.detail-hero-kicker {
  color: var(--color-navy-light) !important;
  font-size: var(--font-size-sm) !important;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
  text-transform: uppercase;
}

/* ===========================
   Utility
   =========================== */
.text-yellow { color: var(--color-yellow); }
.text-center { text-align: center; }
.mt-4  { margin-top: var(--space-4); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-8  { margin-bottom: var(--space-8); }

.badge {
  display: inline-block;
  padding: 2px var(--space-2);
  background: var(--color-yellow);
  color: var(--color-black);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
}

.divider {
  width: 48px;
  height: 3px;
  background: var(--color-yellow);
  border-radius: var(--radius-full);
  margin: var(--space-4) 0;
}