/* ============================================
   GLEICHFELD GEBÄUDEREINIGUNG - CSS VARIABLES
   ============================================ */

:root {
  /* --- Farbschema --- */
  
  /* Primärfarben */
  --color-primary: #2E5C9B;       /* Blau - Hauptfarbe */
  --color-primary-dark: #1E3D6B;  /* Dunkelblau */
  --color-primary-light: #5582C6; /* Hellblau */
  
  /* Neutrale Farben */
  --color-white: #FFFFFF;         /* Weiß */
  --color-black: #000000;         /* Schwarz */
  --color-gray: #F5F5F5;          /* Hellgrau */
  --color-gray-light: #FAFAFA;    /* Sehr helles Grau */
  --color-gray-med: #E0E0E0;      /* Mittel Grau */
  --color-gray-dark: #808080;     /* Dunkel Grau */
  
  /* Akzentfarben */
  --color-accent: #4A90D9;        /* Akzentblau */
  --color-accent-dark: #357AB8;   /* Dunkles Akzentblau */
  --color-accent-light: #6EA8F0;  /* Helles Akzentblau */
  
  /* Spezialfarben */
  --color-berlin-cards: #DC143C;  /* Berlin Cards Rot */
  
  /* --- Breakpoints --- */
  --breakpoint-mobile: 768px;     /* Mobile */
  --breakpoint-tablet: 992px;     /* Tablet */
  --breakpoint-desktop: 1024px;   /* Desktop */
  
  /* --- Typografie --- */
  --font-family-heading: 'Open Sans', sans-serif;
  --font-family-body: 'Open Sans', sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* --- Spacing / Container --- */
  --spacing-xs: 5px;
  --spacing-sm: 10px;
  --spacing-md: 20px;
  --spacing-lg: 30px;
  --spacing-xl: 50px;
  --spacing-2xl: 80px;
  --spacing-3xl: 100px;
  
  /* --- Container Sizes --- */
  --container-xs: 540px;
  --container-sm: 720px;
  --container-md: 960px;
  --container-lg: 1140px;
  --container-xl: 1320px;
  
  /* --- Header --- */
  --header-height-mobile: 60px;
  --header-height-tablet: 70px;
  --header-height-desktop: 80px;
  --header-bg: #FFFFFF;
  --header-bg-top: #F5F5F5;
  --header-border-bottom: #E5E5E5;
  
  /* --- Services Grid --- */
  --services-columns-mobile: 2;
  --services-columns-tablet: 3;
  --services-columns-desktop: 4;
  
  /* --- Services Grid Dimensions --- */
  --service-card-width-mobile: 270px;
  --service-card-height-mobile: 360px;
  --service-card-width-tablet: 310px;
  --service-card-height-tablet: 390px;
  --service-card-width-desktop: 320px;
  --service-card-height-desktop: 440px;
  
  /* --- Hero Slider --- */
  --hero-slider-width-mobile: 360px;
  --hero-slider-height-mobile: 400px;
  --hero-slider-width-tablet: 854px;
  --hero-slider-height-tablet: 480px;
  --hero-slider-width-desktop: 1200px;
  --hero-slider-height-desktop: 600px;
  
  /* --- Buttons --- */
  --button-primary-bg: #2E5C9B;
  --button-primary-text: #FFFFFF;
  --button-primary-border: #2E5C9B;
  --button-primary-radius: 5px;
  --button-primary-padding: 12px 25px;
  --button-primary-font-size: 15px;
  
  /* --- Shadows --- */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  
  /* --- Header Colors --- */
  --header-bg-color: #FFFFFF;
  --header-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  --header-link-color: #2E5C9B;
  --header-link-hover: #4A90D9;
  --header-bg-top-color: rgba(255, 255, 255, 0.95);
  
  /* --- Mobile Menu --- */
  --mobile-menu-bg: #FFFFFF;
  --mobile-menu-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  --mobile-menu-width: 320px;
  --mobile-menu-close-bg: #DC143C;
  
  /* --- Footer --- */
  --footer-bg: rgba(46, 92, 155, 0.08);
  --footer-bg-desktop: #FFFFFF;
  --footer-bg-pattern: url('images/bgs/04.jpg');
  --footer-text-color: #333333;
  --footer-title-color: #2E5C9B;
  --footer-link-color: #333333;
  --footer-link-hover: #2E5C9B;
  --footer-bottom-bg: #1A1A1A;
  --footer-bottom-text: #FFFFFF;
  
  /* --- Berlin Cards --- */
  --berlin-cards-bg: #DC143C;
  --berlin-cards-text: #FFFFFF;
  --berlin-cards-button-bg: #DC143C;
  --berlin-cards-button-text: #FFFFFF;
  
  /* --- About Section --- */
  --about-bg: #FFFFFF;
  --about-title-color: #2E5C9B;
  --about-title-span-color: #DC143C;
  
  /* --- Transitions --- */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ============================================
   CSS RESET & BASE STYLES
   ============================================ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-body);
  font-size: 15px;
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: #333333;
  background-color: var(--color-white);
}

/* --- Typography --- */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: 1.3;
  color: #2E5C9B;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 32px; }
h2 { font-size: 28px; }
h3 { font-size: 24px; }
h4 { font-size: 20px; }
h5 { font-size: 18px; }
h6 { font-size: 16px; }

p {
  margin-bottom: var(--spacing-md);
  color: #444444;
}

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

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

ul, ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

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

/* --- Links --- */

a:hover {
  color: var(--color-primary-dark);
}

/* --- Buttons --- */

.btn {
  display: inline-block;
  padding: var(--button-primary-padding);
  font-size: var(--button-primary-font-size);
  font-weight: var(--font-weight-semibold);
  color: var(--button-primary-text);
  background-color: var(--button-primary-bg);
  border: 2px solid var(--button-primary-border);
  border-radius: var(--button-primary-radius);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  line-height: 1.4;
}

.btn:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn.btn-primary {
  background-color: var(--button-primary-bg);
  border-color: var(--button-primary-border);
  color: var(--button-primary-text);
}

.btn.btn-primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn.btn-outline {
  background-color: transparent;
  border-color: var(--button-primary-bg);
  color: var(--button-primary-bg);
}

.btn.btn-outline:hover {
  background-color: var(--button-primary-bg);
  color: var(--button-primary-text);
}

/* --- Container --- */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
}

/* --- Grid System --- */

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -var(--spacing-sm);
}

.col {
  flex: 0 0 auto;
  padding: var(--spacing-sm) 0;
}

.col-xs {
  flex: 0 0 100%;
  max-width: 100%;
}

.col-sm {
  flex: 0 0 100%;
  max-width: 540px;
}

.col-md {
  flex: 0 0 100%;
  max-width: 720px;
}

.col-lg {
  flex: 0 0 100%;
  max-width: 960px;
}

.col-xl {
  flex: 0 0 100%;
  max-width: 1140px;
}

/* --- Flex Helpers --- */

.flex {
  display: flex;
}

.flex-center {
  justify-content: center;
}

.flex-between {
  justify-content: space-between;
}

.flex-start {
  align-items: flex-start;
}

.flex-center {
  align-items: center;
}

/* --- Utility Classes --- */

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

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.text-uppercase {
  text-transform: uppercase;
}

.text-bold {
  font-weight: var(--font-weight-bold);
}

.hidden {
  display: none !important;
}

/* --- Section Styles --- */

.section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-size: 36px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: 16px;
  color: #666666;
  max-width: 800px;
  margin: 0 auto;
}

/* --- Image Styles --- */

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

/* === END MOBILE === */