:root{
    --bg-color: #e0e5ec;
    --shadow-light: #ffffff;
    --shadow-dark: #a3b1c6;
    --input-bg: #e0e5ec;
    --text-color: #333;
    --accent: #4a90e2;
}
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-color);
}
.login-box{
    background-color: var(--bg-color);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 10px 10px 20px var(--shadow-dark),
    -10px -10px 20px var(--shadow-light);
    width: 320px;
    animation: fadeIn 1s ease forwards;
    opacity: 0;
}
@keyframes fadeIn{
    to{
        opacity: 1;
        transform: translateY(0);
    }
    from{
        opacity: 0;
        transform: translateY(-20px);
    }
}
.login-box h2{
    text-align: center;
    margin-bottom: 30px;
    color: var(--text-color);
}
.form-group{
    margin-bottom: 20px;
    position: relative;
}
.form-group input{
    width: 100%;
    padding: 12px 15px;
    border: none;
    border-radius: 10px;
    background: var(--input-bg);
    box-shadow: inset 5px 5px 10px var(--shadow-dark),
    inset -5px -5px 10px var(--shadow-light);
    font-size: 16px;
    color: var(--text-color);
    transition: all 0.3s ease;
}
.form-group input:focus{
    outline: none;
    box-shadow: inset 2px 2px 5px var(--shadow-dark),
    inset -2px -2px 5px var(--shadow-light),
    0 0 5px var(--accent);
}
.login-box button{
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 10px;
    background: var(--input-bg);
    box-shadow: 5px 5px 10px var(--shadow-dark),
    -5px -5px 10px var(--shadow-light);
    font-size: 16px;
    font-weight: bold;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
}
.login-box button:hover{
    background: var(--accent);
    color: #fff;
    box-shadow: 2px 2px 5px var(--shadow-dark),
    -2px -2px 5px var(--shadow-light);
}
.login-box .links{
    text-align: center;
    margin-top: 20px;
}
.login-box .links a{
    text-decoration: none;
    color: var(--accent);
    font-size: 14px;
    transition: color 0.3s ease;
}
.login-box .links a:hover{
    text-decoration: underline;
}