/**
 * Löwennetzwerk - Main Stylesheet
 * Version: 2.0 (Rebuild)
 * Date: Dezember 2025
 * Style Guide: Version 1.0 | Januar 2025
 */

/* ============================================
   CSS VARIABLES (Style Guide 2025)
   ============================================ */
:root {
    /* Primary Colors */
    --color-gold: #DAA520;
    --color-dark-red: #8B0000;
    --color-black: #000000;
    
    /* Background Colors */
    --color-bg: #000000;
    --color-bg-card: rgba(0, 0, 0, 0.6);
    --color-bg-gradient-end: #1A0000;
    
    /* Text Colors */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #D1D5DB;
    --color-text-tertiary: #9CA3AF;
    
    /* Status Colors */
    --color-success: #22C55E;
    --color-error: #EF4444;
    --color-warning: #F59E0B;
    
    /* Border Colors */
    --color-border-gold: rgba(218, 165, 32, 0.3);
    --color-border-gold-hover: rgba(218, 165, 32, 0.5);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-gold) 0%, var(--color-dark-red) 100%);
    --gradient-background: linear-gradient(180deg, var(--color-black) 0%, var(--color-bg-gradient-end) 100%);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    /* Font Sizes */
    --font-size-xs: 0.75rem;     /* 12px */
    --font-size-sm: 0.875rem;    /* 14px */
    --font-size-base: 1rem;      /* 16px */
    --font-size-lg: 1.125rem;    /* 18px */
    --font-size-xl: 1.25rem;     /* 20px */
    --font-size-2xl: 1.5rem;     /* 24px */
    --font-size-3xl: 1.875rem;   /* 30px */
    --font-size-4xl: 2.25rem;    /* 36px */
    --font-size-5xl: 3rem;       /* 48px */
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Container Widths */
    --container-sm: 600px;
    --container-md: 900px;
    --container-lg: 1200px;
    --container-xl: 1400px;
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--gradient-background);
    min-height: 100vh;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

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

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

/* Gradient Text */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-text-primary);
    border-color: transparent;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(218, 165, 32, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-gold);
    border-color: var(--color-border-gold);
}

.btn-secondary:hover {
    background: var(--color-gold);
    color: var(--color-black);
    border-color: var(--color-gold);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

input, textarea, select {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--color-border-gold);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(218, 165, 32, 0.1);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--color-bg-card);
    border: 2px solid var(--color-border-gold);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--color-border-gold-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* ============================================
   CONTAINERS
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-lg);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-sm {
    max-width: var(--container-sm);
}

.container-md {
    max-width: var(--container-md);
}

.container-xl {
    max-width: var(--container-xl);
}

/* ============================================
   SECTIONS
   ============================================ */
section {
    padding: var(--spacing-3xl) 0;
}

/* ============================================
   NAVIGATION
   ============================================ */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    border-bottom: 2px solid var(--color-border-gold);
    backdrop-filter: blur(10px);
    z-index: var(--z-sticky);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
}

.nav-logo {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gold);
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-links a {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-base);
}

.nav-links a:hover {
    color: var(--color-gold);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: rgba(0, 0, 0, 0.95);
    border-top: 2px solid var(--color-border-gold);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border-gold);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

/* ============================================
   UTILITIES
   ============================================ */
.hidden {
    display: none !important;
}

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

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

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: var(--color-text-primary);
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xl);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(218, 165, 32, 0.4);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
    }
    
    .nav-links {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

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

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ============================================
   CUSTOM SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-black);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gold);
}