*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body{
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;

    /* Fondo degradado */
    background: linear-gradient(
        135deg,
        #ffffff 0%,
        #d9d9d9 35%,
        #7a7a7a 55%,
        #111111 100%
    );
}

.login-container{
    width: 100%;
    max-width: 430px;
    padding: 45px 35px;

    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(12px);

    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.2);

    box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}

.logo{
    position: absolute;
    top: 50px;
    left: 30px;
    z-index: 10;
    border: none;
    outline: none;
    box-shadow: none;
}

.logo img{
    width: 540px; /* Más grande */
    height: auto;
    display: block;

    filter: drop-shadow(0px 4px 12px rgba(0,0,0,0.35));
}

.login-qr{
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 120px;
    height: auto;
    display: block;
}

/* Responsive */
@media (max-width: 768px){

    .logo{
        top: 15px;
        left: 15px;
    }

    .logo img{
        width: 220px;
    }
}
h1{
    text-align: center;
    margin-bottom: 30px;

    color: white;
    font-size: 30px;
    font-weight: bold;
    letter-spacing: 2px;

    text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

form p{
    margin-bottom: 18px;
}

form label{
    display: block;
    margin-bottom: 8px;

    color: #f0f0f0;
    font-size: 14px;
    font-weight: bold;
}

form input{
    width: 100%;
    padding: 13px 15px;

    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.2);

    background: rgba(255,255,255,0.12);
    color: white;

    outline: none;
    transition: all 0.3s ease;
}

form input::placeholder{
    color: #d0d0d0;
}

form input:focus{
    background: rgba(255,255,255,0.18);
    border-color: white;

    box-shadow: 0 0 10px rgba(255,255,255,0.3);
}

button{
    width: 100%;
    padding: 14px;

    border: none;
    border-radius: 10px;

    background: linear-gradient(
        90deg,
        #ffffff,
        #d6d6d6,
        #8a8a8a
    );

    color: #111;
    font-size: 16px;
    font-weight: bold;

    cursor: pointer;
    transition: all 0.3s ease;

    margin-top: 10px;
}

button:hover{
    transform: translateY(-2px);

    background: linear-gradient(
        90deg,
        #f5f5f5,
        #c9c9c9,
        #6f6f6f
    );

    box-shadow: 0 5px 15px rgba(0,0,0,0.35);
}

@media (max-width: 480px){

    .login-qr{
        width: 90px;
        right: 12px;
        bottom: 12px;
    }

    .login-container{
        margin: 20px;
        padding: 35px 25px;
    }

    .logo img{
        width: 180px;
    }

    h1{
        font-size: 24px;
    }
}