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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #5865F2, #7289DA);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

.login-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo i {
    font-size: 3rem;
    color: #5865F2;
    margin-bottom: 1rem;
}

.logo h1 {
    color: #333;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background-color: #5865F2;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.login-btn:hover {
    background-color: #4752c4;
}

.login-btn:disabled {
    background-color: #747f8d;
    cursor: not-allowed;
}

.message {
    margin-top: 1rem;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
}

.message.error {
    background-color: #ffebee;
    color: #c62828;
    border: 1px solid #ef9a9a;
}

.message.success {
    background-color: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #a5d6a7;
}

.instructions {
    margin-top: 2rem;
    padding: 1rem;
    background-color: #f8f9fa;
    border-radius: 5px;
    border-left: 4px solid #5865F2;
}

.instructions h3 {
    margin-bottom: 0.5rem;
    color: #333;
}

.instructions p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.4;
}

footer {
    text-align: center;
    margin-top: 2rem;
    color: white;
}

/* Responsive styles */
@media (max-width: 480px) {
    .login-container {
        padding: 15px;
    }
    
    .login-card {
        padding: 1.5rem;
    }
    
    .logo h1 {
        font-size: 1.3rem;
    }
}