* {
    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;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: #333;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1 {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 30px;
    color: #1a1a1a;
    text-align: center;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: #555;
}

input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: border-color 0.2s;
}

input[type="email"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #0066cc;
}

.error-message {
    color: #d32f2f;
    font-size: 14px;
    margin-bottom: 15px;
    min-height: 20px;
    display: none;
}

.error-message.show {
    display: block;
}

.login-button {
    width: 100%;
    padding: 12px;
    font-size: 14px;
    font-weight: 500;
    color: white;
    background-color: #0066cc;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.login-button:hover {
    background-color: #0052a3;
}

.login-button:active {
    background-color: #004080;
}

.login-button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}