/* =============================================================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================================================= */
:root {
  /* Corporate Identity Colors - Based on Business Card */
  --accent-color: #dd0a14;        /* Deep burgundy red from company name */
  --accent-dark: #b91c1c;         /* Darker burgundy for hover states */
  --accent-light: #ef4444;        /* Lighter burgundy for subtle accents */
  
  /* Blue accent colors from geometric elements */
  --blue-primary: #38789c;        /* Medium blue from geometric shapes */
  --blue-secondary: #1b6d83;      /* Dark blue-green */
  --blue-light: #1faccf;          /* Light blue-cyan */
  --blue-dark: #1b6d83;           /* Dark blue-green */
  
  --primary-color: #000000;       /* Pure black for text and elements */
  --primary-dark: #000000;        /* Pure black */
  --primary-light: #666666;       /* Dark gray for subtle elements */
  
  --text-color: #000000;          /* Pure black for all text */
  --text-light: #666666;          /* Dark gray for secondary text */
  --text-white: #ffffff;          /* Pure white for text on dark backgrounds */
  --text-muted: #999999;          /* Light gray for subtle text */
  
  --background-color: #ffffff;    /* Pure white */
  --background-secondary: #ffffff; /* Pure white */
  --background-dark: #000000;     /* Pure black for contrast sections */
  
  --border-color: #e5e5e5;        /* Light gray border */
  --border-light: #f5f5f5;        /* Very light gray border */
  
  /* Enhanced Shadows with blue tint */
  --shadow-sm: 0 1px 2px 0 rgba(56, 120, 156, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(56, 120, 156, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(56, 120, 156, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(56, 120, 156, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Typography Scale */
  --font-family-base: "Open Sans Condensed", system-ui, -apple-system, sans-serif;
  --font-family-brand: "Ariane Extra Bold DB", serif;
  
  /* Spacing Scale */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Layout */
  --container-max-width: 1200px;
  --page-max-width: 900px;
  --border-radius-sm: 6px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: var(--font-family-base);
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family-base);
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-color);
  background-color: var(--background-secondary);
  min-width: 320px;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  border: none;
  margin: 0;
  padding: 0;
}

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

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

a:focus {
  outline: 2px solid var(--text-color);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

/* =============================================================================
   FONT FACE
   ============================================================================= */
@font-face {
  font-family: 'Ariane Extra Bold DB';
  src: url("../assets/fonts/AREBDB.TTF");
  font-style: normal;
  font-display: swap;
}

/* =============================================================================
   LAYOUT COMPONENTS
   ============================================================================= */
.main-container {
  position: relative;
  max-width: var(--container-max-width);
  margin: 0 auto;
  min-height: 100vh;
  padding: var(--space-lg);
}




.home-layout {
  display: grid;
  grid-template-areas: 
    "header"
    "content"
    "footer";
  gap: var(--space-lg);
  min-height: calc(100vh - 3rem);
}

/* =============================================================================
   HOMEPAGE COMPONENTS
   ============================================================================= */
.greetings {
  grid-area: header;
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  background: var(--background-color);
  color: var(--text-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--blue-primary);
}

.greetings span {
  display: block;
  margin-bottom: var(--space-sm);
}

.greetings span:first-child {
  font-size: clamp(1.1rem, 3vw, 1.3rem);
  font-weight: 300;
  color: var(--text-color);
  letter-spacing: 0.5px;
}

.greetings .server {
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: bold;
  color: var(--accent-color);
  font-family: var(--font-family-brand);
  margin: var(--space-md) 0;
}

.greetings span:last-child {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  font-weight: 600;
  color: var(--text-color);
  letter-spacing: 1px;
}

.contact {
  grid-area: content;
  background: var(--background-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-xl);
  text-align: center;
  border: 1px solid var(--border-light);
  background-image: url('../assets/images/polygon.png');
  background-size: 200px;
  background-repeat: no-repeat;
  background-position: bottom right;
}

.contact::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--border-color);
  border-radius: var(--border-radius-lg);
  z-index: -1;
  opacity: 0;
  transition: var(--transition);
}

.contact:hover::before {
  opacity: 0.1;
}

.contact {
  position: relative;
}

/* Contact Item Layout */
.contact-item {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--space-xs) 0;
  padding: var(--space-sm);
  border-radius: var(--border-radius-md);
  transition: var(--transition);
}

.contact-item:hover {
  background-color: rgba(0, 0, 0, 0.02);
  transform: translateX(5px);
}

.contact-icon {
  font-size: 1.2rem;
  color: var(--blue-primary);
  margin-right: var(--space-md);
  min-width: 20px;
  text-align: center;
}

.contact-details {
  flex: 0 1 auto;
}

.contact-details span {
  display: block;
  padding: 0;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--text-color);
  margin-bottom: var(--space-xs);
}

.contact-details span:last-child {
  margin-bottom: 0;
}

.contact-details span:first-child {
  font-weight: 600;
  font-size: 1.1rem;
}

.contact-details span:last-child:not(:first-child) {
  font-weight: 500;
  color: var(--text-light);
}

.contact a {
  color: var(--text-color);
  font-weight: 600;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
  text-decoration: none;
}

.contact a:hover {
  background-color: var(--text-color);
  color: var(--text-white);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.contact-details span:not(:has(a)) {
  padding: var(--space-xs) var(--space-sm);
}

.contact-separator {
  display: none;
  color: var(--text-muted);
  margin: 0 var(--space-md);
}

/* =============================================================================
   NAVIGATION
   ============================================================================= */
.navigation {
  grid-area: footer;
  text-align: center;
  padding: var(--space-xl) 0;
  background: var(--background-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
}

.navigation a {
  display: inline-block;
  color: var(--text-color);
  font-weight: 600;
  margin: 0 var(--space-md);
  padding: var(--space-md) var(--space-xl);
  border: 2px solid var(--text-color);
  border-radius: var(--border-radius-md);
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.95rem;
}

.navigation a:hover {
  background: linear-gradient(135deg, var(--blue-primary) 0%, var(--blue-dark) 100%);
  color: var(--text-white);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-primary);
}

.navigation a:active {
  transform: translateY(-1px);
}

/* =============================================================================
   PAGE LAYOUT (IMPRESSUM & DATENSCHUTZ)
   ============================================================================= */
.page-body {
  background: var(--background-secondary);
  min-height: 100vh;
  padding: var(--space-lg);
}

.container {
  max-width: var(--page-max-width);
  margin: 0 auto;
  background: var(--background-color);
  padding: var(--space-3xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-light);
  position: relative;
}

.container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-light) 0%, var(--blue-primary) 50%, var(--blue-dark) 100%);
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

/* =============================================================================
   TYPOGRAPHY
   ============================================================================= */
h1 {
  color: var(--blue-primary);
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  margin-bottom: var(--space-2xl);
  font-family: var(--font-family-base);
  text-align: center;
  line-height: 1.2;
  position: relative;
}

h1::after {
  content: '';
  position: absolute;
  bottom: -var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--blue-primary);
  border-radius: 2px;
}

h2 {
  color: var(--text-color);
  font-size: clamp(1.5rem, 4vw, 1.8rem);
  margin: var(--space-2xl) 0 var(--space-lg) 0;
  border-left: 4px solid var(--text-color);
  padding-left: var(--space-lg);
  font-weight: 600;
  line-height: 1.3;
}

h3 {
  color: var(--text-color);
  font-size: clamp(1.2rem, 3vw, 1.4rem);
  margin: var(--space-xl) 0 var(--space-md) 0;
  font-weight: 600;
}

h4 {
  color: var(--text-color);
  font-size: 1.1rem;
  margin: var(--space-lg) 0 var(--space-sm) 0;
  font-weight: 600;
}

.container p {
  margin: var(--space-lg) 0;
  line-height: 1.8;
  color: var(--text-color);
  font-size: 1rem;
}

.container ul {
  margin: var(--space-lg) 0;
  padding-left: var(--space-xl);
}

.container li {
  margin: var(--space-sm) 0;
  line-height: 1.7;
}

/* Enhanced link styling within content */
.container a {
  color: var(--text-color);
  font-weight: 500;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.container a:hover {
  color: var(--text-color);
  border-bottom-color: var(--text-color);
  text-decoration: none;
}

/* =============================================================================
   BACK LINK COMPONENT
   ============================================================================= */
.back-link {
  text-align: center;
  margin: var(--space-3xl) 0 0 0;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
}

.back-link a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-color);
  font-weight: 600;
  padding: var(--space-md) var(--space-xl);
  border: 2px solid var(--text-color);
  border-radius: var(--border-radius-md);
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.9rem;
}

.back-link a::before {
  content: '←';
  font-size: 1.2em;
  transition: var(--transition);
}

.back-link a:hover {
  background: linear-gradient(135deg, var(--blue-primary) 0%, var(--blue-dark) 100%);
  color: var(--text-white);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-primary);
}

.back-link a:hover::before {
  transform: translateX(-2px);
}

/* =============================================================================
   RETINA DISPLAY SUPPORT
   ============================================================================= */
.nonretina {
  display: inline-block;
}

.retina {
  display: none;
}

@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .nonretina {
    display: none;
  }
  
  .retina {
    display: inline-block;
  }
}

/* =============================================================================
   RESPONSIVE DESIGN
   ============================================================================= */

/* Large tablets */
@media (max-width: 1024px) {
  :root {
    --container-max-width: 100%;
    --space-3xl: 3rem;
  }
  
  .main-container {
    padding: var(--space-md);
  }
}

/* Tablets */
@media (max-width: 768px) {
  body {
    font-size: 16px;
  }
  
  .main-container {
    padding: var(--space-md);
  }
  
  .home-layout {
    gap: var(--space-xl);
  }
  
  .greetings {
    padding: var(--space-xl) var(--space-md);
    margin: var(--space-md) 0;
  }
  
  .contact {
    padding: var(--space-lg);
  }
  
  .navigation {
    padding: var(--space-lg) 0;
  }
  
  .navigation a {
    margin: var(--space-sm) var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.9rem;
  }
  
  .container {
    padding: var(--space-xl);
  }
}

/* Mobile devices */
@media (max-width: 480px) {
  .page-body {
    padding: var(--space-sm);
  }
  
  .container {
    padding: var(--space-lg);
  }
  
  .main-container {
    padding: var(--space-sm);
  }
  
  .greetings {
    padding: var(--space-lg) var(--space-md);
  }
  
  .contact {
    padding: var(--space-md);
  }
  
  .contact-item {
    margin: var(--space-xs) 0;
    padding: var(--space-xs);
  }
  
  .contact-icon {
    font-size: 1.1rem;
    margin-right: var(--space-sm);
  }
  
  .contact-details span {
    font-size: 0.95rem;
  }
  
  .navigation {
    padding: var(--space-md) 0;
  }
  
  .navigation a {
    display: block;
    margin: var(--space-sm) 0;
    padding: var(--space-md) var(--space-lg);
  }
  
  h2 {
    padding-left: var(--space-md);
  }
}

/* Small mobile devices */
@media (max-width: 360px) {
  .contact-details span {
    font-size: 0.95rem;
  }
  
  .contact-icon {
    font-size: 1.1rem;
    margin-right: var(--space-sm);
  }
  
  .navigation a {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.85rem;
  }
}

/* =============================================================================
   PRINT STYLES
   ============================================================================= */
@media print {
  body {
    background: var(--background-color);
    color: var(--text-color);
    font-size: 12pt;
    line-height: 1.4;
  }
  
  .navigation {
    display: none;
  }
  
  .back-link {
    display: none;
  }
  
  .container {
    box-shadow: none;
    border: 1px solid var(--text-color);
    max-width: none;
  }
  
  h1, h2, h3 {
    color: var(--text-color);
  }
  
  a {
    color: var(--text-color);
    text-decoration: underline;
  }
}

/* =============================================================================
   ACCESSIBILITY IMPROVEMENTS
   ============================================================================= */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --accent-color: #b91c1c;
    --text-color: #000000;
    --text-white: #ffffff;
    --background-color: #ffffff;
    --border-color: #000000;
  }
}