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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 40px;
    width: 100%;
    max-width: 600px;
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.header h1 {
    color: #333;
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.header p {
    color: #666;
    font-size: 1.1rem;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
    font-size: 1rem;
}

.form-group input {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

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

.btn-container {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.btn {
    flex: 1;
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: #f8f9fa;
    color: #6c757d;
    border: 2px solid #e9ecef;
}

.btn-secondary:hover {
    background: #e9ecef;
    transform: translateY(-1px);
}

.alert {
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-weight: 500;
    display: none;
}

.alert.success {
    background-color: #d4edda;
    color: #155724;
    border: 2px solid #c3e6cb;
    display: block;
}

.alert.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 2px solid #f5c6cb;
    display: block;
}

.alert.warning {
    background-color: #fff3cd;
    color: #856404;
    border: 2px solid #ffeaa7;
    display: block;
}

.search-section {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 30px;
}

.search-section h3 {
    color: #333;
    margin-bottom: 15px;
    text-align: center;
}

.auto-field {
    background-color: #f8f9fa;
    color: #6c757d;
}

.required {
    color: #e74c3c;
}

.search-results {
    background: #e8f4fd;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 20px;
}

.search-results h4 {
    color: #333;
    margin-bottom: 15px;
}

.customer-card {
    background: white;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 10px;
    border-left: 4px solid #667eea;
}

.loading {
    display: none;
    text-align: center;
    color: #667eea;
    margin: 20px 0;
}