html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

body {
    font-family: Arial, sans-serif;
}

.login-page {
    min-height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    background: url("../images/papel.jpg") no-repeat center center;
    background-size: cover;
}

.login-container {
    width: 100%;
    max-width: 420px;
    text-align: center;
    padding: 28px 24px;
    border-radius: 18px;
    background: rgba(255, 248, 235, 0.08);
    backdrop-filter: blur(4px);
}

.logo {
    width: min(260px, 70vw);
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 18px;
    filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.6));
}

.login-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.login-form input,
.btn-login {
    width: 100%;
    max-width: 260px;
    min-height: 46px;
    padding: 12px 14px;
    border: none;
    border-radius: 8px;
    background: rgba(255, 250, 235, 0.38);
    font-size: 16px;
    text-align: center;
}

.login-form input {
    color: #111;
}

.login-form input::placeholder {
    color: rgba(0, 0, 0, 0.72);
}

input:focus {
    outline: none;
}

.login-form input:focus,
.btn-login:hover {
    box-shadow: 0 0 9px rgba(0, 0, 0, 0.3);
}

.btn-login {
    color: black;
    font-weight: bold;
    letter-spacing: 1px;
    cursor: pointer;
    transition: box-shadow 0.3s ease, transform 0.2s ease;
}

.btn-login:active {
    transform: scale(0.98);
}

@media (max-width: 768px) {
    .login-page {
        padding: 20px 16px;
        align-items: center;
    }

    .login-container {
        max-width: 360px;
        padding: 24px 18px;
    }

    .logo {
        width: 260px;
        max-width: 80vw;
    }
}

@media (max-width: 480px) {
    .login-page {
        padding: 16px 12px;
    }

    .login-container {
        padding: 26px 18px;
    }

    .logo {
        width: 240px;
        max-width: 85vw;
    }

    .login-form input,
    .btn-login {
        width: 100%;
        max-width: 320px;
    }
}

@media (max-height: 520px) {
    .login-page {
        align-items: flex-start;
        padding-top: 18px;
        padding-bottom: 18px;
    }
}