body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    margin: 0;
    font-family: 'Assistant', sans-serif;
}

.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

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

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: #34495e;
}

.form-group input {
    padding: 12px;
    border: 2px solid #bdc3c7;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

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

.login-btn {
    padding: 12px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

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

.error-message {
    background: #e74c3c;
    color: white;
    padding: 12px;
    border-radius: 5px;
    text-align: center;
    margin-bottom: 20px;
}