body {
    background: #f6f4f2;
    font-family: 'Segoe UI', sans-serif;
    display: flex;  FALTABA 
    flex-direction: column;  evita que la navbar rompa el layout 
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;  evita que pegue contra los bordes en mobile 
}

/* Tarjeta */
.login-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: 22px;
    padding: 40px 35px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

/* Títulos */
.login-title {
    font-size: 26px;
    font-weight: 700;
    color: #1a1a1a;
}

.login-subtitle {
    color: #555;
    margin-bottom: 25px;
}

/* Labels */
.form-label {
    font-weight: 600;
    margin-bottom: 5px;
    color: #333;
}

/* Input-group */
.input-group {
    display: flex;
    width: 100%;
    margin-left: 0 !important;
    margin-right: 0 !important;
}

/* Icono */
.input-group-text {
    background: #fff;
    border: 1px solid #ced4da;
    border-right: none;
    border-radius: 5px 0 0 5px;
    width: auto !important;
    flex: 0 0 auto !important;
}

/* Input */
.input-group .form-control {
    flex: 1 1 auto !important;
    border: 1px solid #ced4da;
    border-left: none;
    border-radius: 0 5px 5px 0;
    height: 48px;
    font-size: 15px;
}

    .input-group .form-control:focus {
        box-shadow: none;
        border-color: #86b7fe;
    }

/* Botón */
.btn-login {
    height: 50px;
    font-size: 16px;
    font-weight: 600;
    background: #142348;
    color: #fff;
    border-radius: 5px;
    width: 100%;
}

    .btn-login:hover {
        background: #005fcc;
        color: #fff;
    }

/* RESPONSIVE */

@media (min-width: 768px) {
    body {
        padding-top: 80px;
        justify-content: flex-start;
    }
    .login-card {
        margin-top: 30px;
    }
}

@media (max-width: 480px) {

    body {
        padding: 15px;
    }

    .login-card {
        padding: 30px 25px;
        border-radius: 18px;
    }

    .login-title {
        font-size: 22px;
    }

    .login-subtitle {
        font-size: 14px;
    }

    .input-group .form-control {
        height: 44px;
        font-size: 14px;
    }

    .input-group-text {
        padding-left: 10px;
        padding-right: 10px;
    }

    .btn-login {
        height: 48px;
        font-size: 15px;
    }
}

@media (max-width: 360px) {
    .login-title {
        font-size: 20px;
    }

    .login-card {
        padding: 25px 20px;
    }
}