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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

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

/* Header */
.header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.header-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.header-content p {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Suchsektion */
.search-section {
    margin-bottom: 40px;
}

.search-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
}

.search-card h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    font-size: 1.8rem;
    font-weight: 600;
}

.search-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-group label {
    font-weight: 600;
    color: #555;
    font-size: 1rem;
}

.form-group input[type="date"] {
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input[type="date"]:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Kategorien Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 10px;
}

.category-item {
    position: relative;
    cursor: pointer;
}

.category-checkbox {
    display: none;
}

.category-label {
    display: block;
    padding: 15px;
    background: #f8f9fa;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    text-align: center;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.category-checkbox:checked + .category-label {
    background: #667eea;
    color: white;
    border-color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.category-label:hover {
    border-color: #667eea;
    transform: translateY(-1px);
}

/* Radius Slider */
.radius-slider {
    display: flex;
    align-items: center;
    gap: 15px;
}

.radius-slider input[type="range"] {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: #e1e5e9;
    outline: none;
    -webkit-appearance: none;
}

.radius-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.radius-slider input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

#radiusValue {
    font-weight: 600;
    color: #667eea;
    min-width: 60px;
}

/* Suchbutton */
.search-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 18px 30px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.search-btn:active {
    transform: translateY(0);
}

/* Ergebnisse */
.results-section {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

.results-header h2 {
    color: #333;
    font-size: 1.8rem;
    font-weight: 600;
}

.results-info {
    background: #667eea;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

/* Event Karten */
.event-card {
    background: #f8f9fa;
    border-radius: 16px;
    padding: 25px;
    border: 2px solid #e1e5e9;
    transition: all 0.3s ease;
    cursor: pointer;
}

.event-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    border-color: #667eea;
}

.event-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.event-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    line-height: 1.4;
    flex: 1;
    margin-right: 15px;
}

.event-source {
    background: #667eea;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.event-details {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: #666;
}

.event-detail {
    display: flex;
    align-items: center;
    gap: 8px;
}

.event-category {
    background: #e8f4fd;
    color: #0066cc;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.event-description {
    color: #666;
    line-height: 1.5;
    margin-bottom: 15px;
}

.event-actions {
    display: flex;
    gap: 10px;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5a6fd8;
}

.btn-secondary {
    background: #f0f0f0;
    color: #666;
}

.btn-secondary:hover {
    background: #e0e0e0;
}

/* Keine Ergebnisse */
.no-results {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.no-results i {
    font-size: 4rem;
    color: #ccc;
    margin-bottom: 20px;
}

.no-results h3 {
    margin-bottom: 15px;
    color: #333;
}

/* Loading */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading p {
    font-size: 1.1rem;
    color: #666;
    font-weight: 500;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 20px;
    width: 90%;
    max-width: 600px;
    position: relative;
    max-height: 80vh;
    overflow-y: auto;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 20px;
    top: 20px;
}

.close:hover {
    color: #000;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header-content h1 {
        font-size: 2.5rem;
    }
    
    .search-card {
        padding: 25px;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .results-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .category-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
}

@media (max-width: 480px) {
    .header-content h1 {
        font-size: 2rem;
    }
    
    .search-card {
        padding: 20px;
    }
    
    .event-card {
        padding: 20px;
    }
    
    .event-header {
        flex-direction: column;
        gap: 10px;
    }
    
    .event-title {
        margin-right: 0;
    }
}