/**
 * Haupt-Stylesheet - Modernes Design mit Dark Mode
 */

:root {
    /* Light Mode Colors */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);
    
    --radius: 16px;
    --radius-sm: 12px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    
    --gradient-start: #1e293b;
    --gradient-end: #0f172a;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.4);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background 0.5s ease, color 0.3s ease;
    position: relative;
    overflow-x: hidden;
}

/* Animated Background Particles */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

[data-theme="dark"] body::before {
    background: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
    position: relative;
    z-index: 1;
}

/* Dark Mode Toggle */
.theme-toggle {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.1) rotate(15deg);
    box-shadow: var(--shadow-xl);
}

.theme-toggle i {
    font-size: 1.5rem;
    color: white;
    transition: var(--transition);
}

.theme-toggle:hover i {
    transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle {
    background: rgba(30, 41, 59, 0.8);
    border-color: rgba(148, 163, 184, 0.3);
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 4rem;
    color: white;
    animation: slideDown 0.8s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header-content {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.header-content::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.site-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 2s ease-in-out infinite alternate;
    position: relative;
    z-index: 1;
}

@keyframes titleGlow {
    from { filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.5)); }
    to { filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.8)); }
}

.site-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    font-weight: 300;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
}

/* Main Content */
.main-content {
    margin-bottom: 3rem;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

/* Service Card */
.service-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 240px;
    border: 1px solid var(--border-color);
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    animation: cardAppear 0.6s ease-out forwards;
}

@keyframes cardAppear {
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light), var(--primary-color));
    background-size: 200% 100%;
    transform: scaleX(0);
    transition: var(--transition);
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.service-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    border-color: var(--primary-color);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover::after {
    opacity: 1;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.service-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-sm);
    color: white;
    font-size: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.service-card:hover .service-icon {
    transform: rotate(5deg) scale(1.1);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(37, 99, 235, 0.4);
}

.service-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.service-content {
    flex: 1;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.service-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    transition: var(--transition);
}

.service-card:hover .service-name {
    color: var(--primary-color);
}

.service-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    transition: var(--transition);
}

.service-actions {
    margin-top: auto;
    position: relative;
    z-index: 1;
}

.service-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    padding: 0.375rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-md);
    animation: badgePulse 2s ease-in-out infinite;
    z-index: 2;
}

@keyframes badgePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-size: 0.9375rem;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: #475569;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-service {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 1;
}

.btn-service:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* No Services */
.no-services {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

/* Footer */
.footer {
    text-align: center;
    padding: 2.5rem;
    color: white;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: fadeIn 1s ease-out 0.5s both;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.footer p {
    margin-bottom: 0.75rem;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.admin-link {
    color: white;
    text-decoration: underline;
    opacity: 0.9;
    transition: var(--transition);
    font-weight: 500;
}

.admin-link:hover {
    opacity: 1;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

/* Alerts */
.alert {
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    animation: slideIn 0.4s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid var(--success-color);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid var(--danger-color);
}

.alert ul {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .theme-toggle {
        top: 1rem;
        right: 1rem;
        width: 50px;
        height: 50px;
    }
    
    .theme-toggle i {
        font-size: 1.25rem;
    }
    
    .site-title {
        font-size: 2.25rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .service-card {
        min-height: auto;
        padding: 1.5rem;
    }
    
    .header-content {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .site-title {
        font-size: 1.875rem;
    }
    
    .site-subtitle {
        font-size: 1rem;
    }
    
    .service-card {
        padding: 1.25rem;
    }
}

/* Loading Animation */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}