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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

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

/* Header */
header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
}

header h1 {
    font-size: 2.5em;
    color: #2c3e50;
    font-weight: 300;
}

/* Search Section */
.search-section {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.search-input {
    width: 100%;
    padding: 15px 20px;
    font-size: 16px;
    border: 2px solid #ddd;
    border-radius: 4px;
    transition: border-color 0.3s;
}

.search-input:focus {
    outline: none;
    border-color: #3498db;
}

.filters-link-container {
    text-align: right;
    margin-top: 10px;
}

.filters-link {
    color: #3498db;
    text-decoration: none;
    font-size: 14px;
    cursor: pointer;
}

.filters-link:hover {
    text-decoration: underline;
}

.filters-separator {
    color: #999;
    margin: 0 8px;
}

/* Filters Panel */
.filters-panel {
    background: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 20px;
    margin-bottom: 20px;
}

.filter-group {
    margin-bottom: 20px;
}

.filter-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.filter-input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    margin-bottom: 10px;
}

.filter-select {
    width: 100%;
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.filter-actions {
    margin-top: 20px;
}

/* Results */
.results-container {
    margin-top: 20px;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.results-table thead {
    background-color: #3498db;
    color: white;
}

.results-table th {
    padding: 12px;
    text-align: left;
    font-weight: 500;
}

.results-table th.sortable {
    cursor: pointer;
    user-select: none;
    position: relative;
    transition: background-color 0.2s;
}

.results-table th.sortable:hover {
    background-color: #2980b9;
}

.sort-indicator {
    display: inline-block;
    margin-left: 5px;
    opacity: 0;
    transition: opacity 0.2s;
    font-weight: bold;
}

.results-table td {
    padding: 12px;
    border-bottom: 1px solid #eee;
}

.results-table tbody tr:hover {
    background-color: #f5f5f5;
}

.no-results, .loading {
    text-align: center;
    padding: 40px;
    color: #777;
    font-size: 16px;
}

/* Buttons */
.btn-primary {
    background-color: #3498db;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-primary:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.3s;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

/* Admin Styles */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.login-container h2 {
    margin-bottom: 30px;
    text-align: center;
    color: #2c3e50;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="file"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-group input[type="checkbox"] {
    margin-right: 8px;
}

.login-note {
    margin-top: 20px;
    font-size: 12px;
    color: #777;
    text-align: center;
}

.alert {
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-error {
    background-color: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.admin-header h2 {
    color: #2c3e50;
}

.admin-stats {
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card h3 {
    color: #555;
    font-size: 18px;
    margin-bottom: 10px;
}

.stat-number {
    font-size: 48px;
    color: #3498db;
    font-weight: 300;
}

.admin-upload-section {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.admin-upload-section h3 {
    margin-bottom: 20px;
    color: #2c3e50;
}

.upload-result {
    margin-top: 20px;
    padding: 15px;
    border-radius: 4px;
}

.upload-result.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.upload-result.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.upload-result h4 {
    margin-bottom: 10px;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.8em;
    }
    
    .search-section {
        padding: 20px;
    }
    
    .results-table {
        font-size: 14px;
    }
    
    .results-table th,
    .results-table td {
        padding: 8px;
    }
    
    .admin-header {
        flex-direction: column;
        gap: 15px;
    }
}