/* CSS VARIABLES - FARBPALETTE UND SYSTEMISCHE WERTE */
:root {
    --color-primary: #1A2A3A;
    --color-secondary: #E0E0E0;
    --color-accent-green: #8BC34A;
    --color-accent-beige: #F5F5DC;
    --color-white: #FFFFFF;
    --color-text-dark: #333333;
    --color-text-light: #666666;
    --color-border: #D0D0D0;
    
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-xxl: 120px;
    
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-geometric: 'Raleway', 'Montserrat', sans-serif;
    
    --transition-speed: 0.3s;
    --transition-fast: 0.15s;
    
    --border-radius: 4px;
    
    --max-width: 1280px;
}

/* RESET UND GRUNDLEGENDE STILE */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-dark);
    background-color: var(--color-white);
}

/* TYPOGRAFIE */
h1 {
    font-family: var(--font-geometric);
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-family: var(--font-geometric);
    font-size: 36px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-family: var(--font-sans);
    font-size: 22px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

p {
    margin-bottom: var(--spacing-md);
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-dark);
}

a {
    color: var(--color-accent-green);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

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

/* HEADER UND NAVIGATION */
.header {
    background-color: var(--color-primary);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.navbar-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    flex-shrink: 0;
}

.logo {
    font-family: var(--font-geometric);
    font-size: 24px;
    font-weight: 700;
    color: var(--color-white);
    text-decoration: none;
    letter-spacing: 1px;
}

.navbar-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--color-white);
    font-size: 14px;
    font-weight: 500;
    padding-bottom: 4px;
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition-speed) ease;
}

.nav-link:hover,
.nav-link.active {
    border-bottom-color: var(--color-accent-green);
}

/* MAIN CONTAINER */
main {
    min-height: calc(100vh - 200px);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* SECTION SPACING */
.section {
    padding: var(--spacing-xxl) 0;
    border-bottom: 1px solid var(--color-border);
}

.section:last-child {
    border-bottom: none;
}

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

/* HERO SECTION */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, rgba(26, 42, 58, 0.95) 100%);
    color: var(--color-white);
    padding: var(--spacing-xxl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('/images/hero-banner.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.2;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.hero h1 {
    color: var(--color-white);
    font-size: 64px;
    margin-bottom: var(--spacing-lg);
}

.hero p {
    color: var(--color-secondary);
    font-size: 18px;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
}

/* GRID LAYOUT */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: 1fr 1fr;
}

.grid-3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.grid-item {
    display: flex;
    flex-direction: column;
}

/* CARDS */
.card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: all var(--transition-speed) ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.card h3 {
    margin-bottom: var(--spacing-md);
}

/* TWO COLUMN LAYOUT */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.two-column-text {
    display: flex;
    flex-direction: column;
}

.two-column-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.two-column-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* BUTTONS */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    text-transform: none;
}

.btn-primary {
    background-color: var(--color-accent-green);
    color: var(--color-white);
    border: 1px solid var(--color-accent-green);
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-accent-green);
    border: 1px solid var(--color-accent-green);
}

.btn-secondary:hover {
    background-color: var(--color-accent-green);
    color: var(--color-white);
    text-decoration: none;
}

/* BACKGROUND SECTIONS */
.bg-secondary {
    background-color: var(--color-secondary);
}

.bg-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.bg-primary h2,
.bg-primary h3 {
    color: var(--color-white);
}

.bg-beige {
    background-color: var(--color-accent-beige);
}

/* QUOTE / HIGHLIGHT BLOCK */
.highlight-block {
    background-color: var(--color-accent-beige);
    border-left: 4px solid var(--color-accent-green);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    border-radius: var(--border-radius);
}

.highlight-block p {
    font-style: italic;
    color: var(--color-text-dark);
    margin: 0;
}

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

li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.8;
}

/* FOOTER */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xxl);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: var(--color-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.footer-links {
    list-style: none;
    margin: 0;
}

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

.footer-links a {
    color: var(--color-secondary);
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--color-accent-green);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--color-secondary);
    font-size: 14px;
}

.footer-bottom a {
    color: var(--color-accent-green);
}

/* TABLE STYLES */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-lg);
    background-color: var(--color-white);
}

thead {
    background-color: var(--color-primary);
    color: var(--color-white);
}

th, td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

tbody tr:hover {
    background-color: var(--color-secondary);
}

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 32px;
        --spacing-xl: 60px;
        --spacing-xxl: 80px;
    }
    
    h1 {
        font-size: 36px;
    }
    
    h2 {
        font-size: 28px;
    }
    
    h3 {
        font-size: 18px;
    }
    
    .navbar-container {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .navbar-menu {
        flex-direction: column;
        gap: var(--spacing-md);
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-sm) 0;
    }
    
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .two-column {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .hero h1 {
        font-size: 42px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
    
    h1 {
        font-size: 28px;
    }
    
    h2 {
        font-size: 22px;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    th, td {
        padding: var(--spacing-sm);
        font-size: 14px;
    }
}