* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}

body {
    height: 100vh;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    justify-content: center;
    align-items: center;
}

.password-box {
    background: white;
    padding: 30px;
    width: 350px;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 00, 0.25);
}

.password-box h2 {
    text-align: center;
    margin-bottom: 25px;
    color: #333;
}

.input-box {
    display: flex;
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
}

.input-box input {
    flex: 1;
    padding: 12px;
    border: none;
    outline: none;
    font-size: 15px;
}

.input-box button {
    background: #667eea;
    border: none;
    color: #fff;
    padding: 0 15px;
    cursor: pointer;
    font-size: 16px;
}

.length-box {
    margin: 20px 0;
}

.length-box label {
    display: flex;
    justify-content: space-between;
}

.length-box input {
    width: 100%;
}

.generate-btn {
    width: 100%;
    padding: 12px;
    background: #764ba2;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
}

.generate-btn:hover {
    opacity: 0.9;
}