/* CSS Variablen - Dunkles Theme (Standard) */
:root {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --accent-primary: #ffffff;
    --accent-secondary: #ffffff;
    --header-bg: #1c1c1c;
    --card-bg: linear-gradient(145deg, #1e1e1e, #2a2a2a);
    --navbar-bg: #333;
    --footer-bg: #333;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    --border-color: rgba(255, 255, 255, 0.05);
    --accent-primary-rgb: 255, 255, 255;
    --accent-secondary-rgb: 255, 255, 255;
}

/* Helles Theme */
[data-theme="light"] {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e0e0e0;
    --text-primary: #333333;
    --text-secondary: #666666;
    --accent-primary: #0056b3;
    --accent-secondary: #0056b3;
    --header-bg: #1976d2;
    --card-bg: linear-gradient(145deg, #ffffff, #f5f5f5);
    --navbar-bg: #1976d2;
    --footer-bg: #1976d2;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --border-color: rgba(0, 0, 0, 0.05);
}

/* Pink Theme */
[data-theme="pink"] {
    --bg-primary: #20062e;
    --bg-secondary: #2e0a42;
    --bg-tertiary: #3b0d54;
    --text-primary: #ffffff;
    --text-secondary: #f0aff0;
    --accent-primary: #ffffff;
    --accent-secondary: #ffffff;
    --header-bg: #2e0a42;
    --card-bg: linear-gradient(145deg, #2e0a42, #3b0d54);
    --navbar-bg: #3b0d54;
    --footer-bg: #3b0d54;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    --border-color: rgba(255, 68, 204, 0.2);
}

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

/* Basis Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    transition: all 0.3s ease;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--header-bg);
    padding: 2.5rem 0;
    text-align: center;
    margin-bottom: 3.5rem;
    border-radius: 0 0 20px 20px;
    box-shadow: var(--box-shadow);
}

header h1 {
    font-size: 3rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    animation: glow 2s ease-in-out infinite alternate;
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    animation: fadeInUp 0.8s ease-out;
    position: relative;
    overflow: hidden;
    margin-bottom: 0;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* Shine effect on hover */
.card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
    transition: left 0.6s ease;
}

.card:hover::after {
    left: 150%;
}

/* Grid Layout */
.grid {
    display: grid;
    gap: 2.5rem;
    margin-bottom: 3rem;
}

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

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

@media (max-width: 768px) {
    .grid-cols-2 {
        grid-template-columns: 1fr;
    }
}

/* Typography */
h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--accent-primary);
    display: flex;
    align-items: center;
}

h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

p {
    margin-bottom: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

p:last-child {
    margin-bottom: 0;
}

/* Links */
a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

/* Icons */
.icon {
    width: 24px;
    height: 24px;
    margin-right: 12px;
    color: var(--accent-primary);
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

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

.mb-4 {
    margin-bottom: 1rem;
}

/* Space Utilities */
.space-y-4 > * + * {
    margin-top: 1.5rem;
}

.space-y-3 > * + * {
    margin-top: 1rem;
}

/* Animationen */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes glow {
    from {
        text-shadow: 0 0 5px rgba(var(--accent-primary-rgb), 0.5),
                     0 0 10px rgba(var(--accent-primary-rgb), 0.3);
    }
    to {
        text-shadow: 0 0 10px rgba(var(--accent-primary-rgb), 0.6),
                     0 0 20px rgba(var(--accent-primary-rgb), 0.4),
                     0 0 30px rgba(var(--accent-primary-rgb), 0.2);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }
    
    .card {
        padding: 20px;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .theme-toggle {
        top: 15px;
        right: 15px;
        padding: 8px 16px;
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    header h1 {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .card {
        padding: 15px;
    }
    
    .icon {
        width: 20px;
        height: 20px;
        margin-right: 10px;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    h3 {
        font-size: 1.1rem;
    }
    
    p {
        font-size: 0.9rem;
    }
    
    .theme-toggle {
        top: 10px;
        right: 10px;
        padding: 6px 12px;
        font-size: 12px;
    }
}

/* Touch-friendly interactions */
@media (hover: none) and (pointer: coarse) {
    .card:hover {
        transform: none;
    }
    
    .card:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
    
    a:active {
        transform: scale(0.95);
        transition: transform 0.1s ease;
    }
    
    .theme-toggle:active {
        transform: scale(0.95);
    }
}

/* Accessibility */
.keyboard-nav *:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

[data-highcontrast="true"] {
    --bg-primary: #000000;
    --bg-secondary: #ffffff;
    --text-primary: #ffffff;
    --text-secondary: #ffff00;
    --accent-primary: #00ff00;
    --accent-secondary: #00ff00;
    --border-color: #ffffff;
    --box-shadow: 0 0 0 2px #ffffff;
}

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

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 10px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
    color: var(--text-primary);
}

.theme-toggle:hover {
    transform: scale(1.05);
    box-shadow: var(--box-shadow);
}

/* Print Styles */
@media print {
    body {
        background: white !important;
        color: black !important;
        font-size: 12pt;
        line-height: 1.4;
    }
    
    header {
        background: none !important;
        box-shadow: none !important;
        border-radius: 0 !important;
        margin-bottom: 1rem !important;
    }
    
    header h1 {
        background: none !important;
        -webkit-text-fill-color: black !important;
        color: black !important;
        font-size: 24pt !important;
        animation: none !important;
    }
    
    .card {
        background: white !important;
        border: 1px solid #ccc !important;
        box-shadow: none !important;
        break-inside: avoid;
        page-break-inside: avoid;
    }
    
    .card:hover {
        transform: none !important;
        box-shadow: none !important;
    }
    
    .card::after {
        display: none !important;
    }
    
    h2 {
        color: black !important;
        font-size: 16pt !important;
        page-break-after: avoid;
    }
    
    h3 {
        color: black !important;
        font-size: 14pt !important;
        page-break-after: avoid;
    }
    
    p {
        color: black !important;
        font-size: 12pt !important;
        orphans: 3;
        widows: 3;
    }
    
    a {
        color: black !important;
        text-decoration: underline !important;
    }
    
    a[href^="http"]::after {
        content: " (" attr(href) ")";
        font-size: 10pt;
        color: #666;
    }
    
    .grid {
        display: block !important;
        gap: 0 !important;
    }
    
    .grid-cols-2 {
        grid-template-columns: 1fr !important;
    }
    
    .container {
        max-width: none !important;
        padding: 0 !important;
    }
    
    .icon {
        display: none !important;
    }
}