* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, sans-serif;
}

body {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    padding: 20px;
}

/* card login */
form {
    background: #ffffff;
    padding: 40px 35px;
    border-radius: 12px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* title */
h2 {
    text-align: center;
    margin-bottom: 25px;
    font-size: 26px;
    color: #333;
}

/* label text */
form {
    font-size: 14px;
    color: #444;
}

/* input */
input {
    width: 100%;
    padding: 12px 14px;
    margin-top: 6px;
    margin-bottom: 16px;
    border-radius: 8px;
    border: 1px solid #ddd;
    font-size: 14px;
    transition: all .2s ease;
}

input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

/* button */
button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: #667eea;
    color: white;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s ease;
}

button:hover {
    background: #5a67d8;
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

/* mobile */
@media(max-width:480px) {

    form {
        padding: 30px 22px;
    }

    h2 {
        font-size: 22px;
    }

}