/* Modern Lexikon UI */
:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #059669;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.1);
    --radius: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

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

/* Header */
header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius);
    color: white;
    box-shadow: var(--shadow-lg);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    margin-bottom: 20px;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.stat-item {
    background: rgba(255,255,255,0.15);
    padding: 12px 24px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.stat-label {
    font-size: 0.85rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    margin-top: 5px;
}

/* Search Section */
.search-section {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.search-box {
    position: relative;
    margin-bottom: 20px;
}

#searchInput {
    width: 100%;
    padding: 16px 50px 16px 20px;
    font-size: 1.1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.3s;
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.clear-btn {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
    display: none;
    transition: color 0.2s;
}

.clear-btn.visible {
    display: block;
}

.clear-btn:hover {
    color: var(--text);
}

.filters {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.filters label {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filters select {
    padding: 10px 15px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: border-color 0.3s;
}

.filters select:focus {
    outline: none;
    border-color: var(--primary);
}

/* Results */
.results-section {
    min-height: 400px;
}

.result-count {
    margin-bottom: 20px;
    color: var(--text-light);
    font-size: 0.95rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.begriff-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all 0.3s;
    cursor: pointer;
    border: 2px solid transparent;
}

.begriff-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.begriff-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.begriff-category {
    display: inline-block;
    padding: 4px 12px;
    background: var(--secondary);
    color: white;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.begriff-definition {
    color: var(--text);
    margin: 15px 0;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.begriff-meta {
    display: flex;
    gap: 15px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
    color: var(--text-light);
}

.begriff-meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Loading & Empty States */
.loading, .empty-state {
    display: none;
    text-align: center;
    padding: 60px 20px;
}

.loading.visible, .empty-state.visible {
    display: block;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.empty-state h3 {
    color: var(--text);
    margin-bottom: 10px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    z-index: 1000;
    animation: fadeIn 0.3s;
}

.modal.visible {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal-content {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    max-width: 700px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-light);
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--text);
}

.detail-title {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.detail-section {
    margin-bottom: 25px;
}

.detail-label {
    font-weight: 700;
    color: var(--text-light);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.detail-value {
    font-size: 1.1rem;
    line-height: 1.7;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 60px;
    padding: 30px;
    color: var(--text-light);
    font-size: 0.9rem;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        padding: 30px 20px;
    }
    
    .stats {
        gap: 15px;
    }
}