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

body {
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
    border: 1px solid #ddd;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: #333;
    font-size: 28px;
    margin-bottom: 10px;
}

.login-header p {
    color: #666;
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #666;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: #333;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.login-btn:hover {
    background: #555;
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    text-align: center;
    display: none;
    border: 1px solid #f5c6cb;
}

.success-message {
    background: #d4edda;
    color: #155724;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    text-align: center;
    display: none;
    border: 1px solid #c3e6cb;
}

.loading {
    opacity: 0.7;
    pointer-events: none;
}